Another city doing some great work around Hidden Hydrology is Toronto. Featured in the Lost Rivers documentary, the city boasts as range of resources and groups worth some exploration.  A plethora of media fuels the fascination, with numerical and witty titles, including “5 lost rivers that run under Toronto“(blogTO), “5 subtle signs of lost rivers in Toronto” (Spacing Toronto), “Toronto’s ‘lost rivers’ reflect how we’ve reshaped nature“, and “Toronto’s Hidden Rivers” (Toronto Star), “Last seen heading for the lake” (The Globe & Mail),  In particular the author Shawn Micallef a colunmist from the Toronto Star that has looked at disappeared creeks, and lost creeks.  The more general discuss “and “What the Toronto Waterfront used to look like” and connect to the online archive of Toronto Historic Maps and other resources.  The following explores some of this in more depth.

Hidden Hydrology Resources & Groups

Lost River Walks is a long-standing resource in Toronto, “The objective of Lost River Walks is to encourage understanding of the city as a part of nature rather than apart from it, and to appreciate and cherish our heritage. Lost River Walks aims to create an appreciation of the city’s intimate connection to its water systems by tracing the courses of forgotten streams, by learning about our natural and built heritage and by sharing this information with others.”  They include a number of Stream Pages, accessible through the Site Map, which provides history of individual streams, in this case, The Market Streams, which highlights a series of streams and provides some overlay mapping of the current sewer network.

Location of Lost Rivers

 

Location of current sewer system

The engagement is a key part of the group, as the name implies, through a series of guided walks, which highlight lost rivers and creeks  in the context of the urban fabric, as well as focusing on topics like water quality. There are also self-guided tours ‘Thirsty City Walks‘, provides opportunities to follow the former and current routes of waterways. A map below shows the route of the walk with key points and audio commentary as one follows the route.

A great bonus article I found on the Geohistory-Géohistoire Canada Project, authored by John Wilson entitled “The Lost Rivers Project: The Case of Holly Brook“.  This post outlines some of the process, in particular the need for ground truthing, as he mentions, “I have spent many hours travelling the city’s streets and laneways looking for signs of lost rivers and ravines. My street-level observation of Holly Brook’s course was simple – whatever the City Engineers may have drawn on 1890s maps, water doesn’t flow uphill!”  Lots of great stuff at Lost River Walks, so check out the website, and follow them on Twitter @LostRiversTO and also via founder and lost rivers force Helen Mills at her account @HMMLostRivers

Vanishing Point is the brainchild of Michael Cook, a resource of which “…emerged from a decade of underground research and photographic practice”.  The varied topics include topics of Daylighting Creeks, Parks and Stormwater Spectacles, Lost River Activism, and Celebrating Infrastructure Projects .  Cook continues, describing the work as ” a form of citizen geography, it has informed community groups, academic projects, and the official work of planners, landscape architects, engineers and archaeologists.”  This sort of comprehensive resource adds to the work of Lost River Walks with information and a wealth of interesting photography.  Lots to check out here, and also worth following Michael on Twitter @waterunder

The Don River Valley Historical Mapping Project is (was) a robust exploration of the Don River, “This project documents historical changes in the landscape of the Don River Valley. Drawing from the wide range of geographical information available for the Don River watershed (and the Lower Don in particular), including historical maps, geological maps, fire insurance plans, planning documents, and city directories, the project uses Geographic Information Systems software to place, compile, synthesize and interpret this information and make it more accessible as geospatial data and maps.”  It’s hard to tell if it’s still active or just the website hasn’t been updated, but most info stops in 2010, but still some great geospatial data, resources, maps, and other information related to the Don and larger Toronto hydrology.

A new? interactive map of the project provides spatial information to complement the work to date, and offers a way to interact with the data in new ways.

Another interesting take on how to use different methods for displaying the subject matter comes from Alex Meyers project “Uncovering the Creek“, a timeline that provides a “…study of the city’s changing landscape through a close examination of Trinity-Bellwoods Park and the Crawford Street bridges. This project is a virtual excavation of a hidden Toronto landmark that has been almost erased by the process of city building.”  A nice method of using a linear timeline with links to graphic resources and maps.

 

Additional Resources 

The group Human River was featured in the Lost Rivers documentary, and was featured doing an interactive walk, “during the annual story telling parade, participants wear blue becoming a human river and bringing the Garrison Creek back to life”.  It’s a cool way to use event to raise awareness plus looks like a lot of fun. It also looks like their website is both abandoned and hacked with lots of spamming links – so i grabbed this image quickly and then ran.  Not sure the current status.

Also mentioned in the Lost Rivers documentary, the Garrison Creek Demonstration Project by Brown & Storey Architects (from 1996!) envisions the use of the Garrison Creek zones for green infrastructure, positing that “… the existing natural watersheds, like the Garrison, can be used as sites for stormwater management pond systems. Not only can these connected pond systems serve to collect, treat and re-use stormwater locally, they can also act as a catalyst in the creation of a series of connected open spaces knitting both an urban and green infrastructure back to the waterfront to Lake Ontario.  The study documents several aspects of the Garrison watershed: the considerable amount of open spaces, their area and type, geological formations, existing storm water infrastructure underground, the areas of fill along the ravine path, and an abstracted locational plan for water retention ponds.”

A walking map of Garrison Creek evokes the story of the plans above, and multiple posts about Garrison Creek and a Discovery Walk also focus on Garrison Creek,

The Garrison Creek route is also referenced with some cool markers, as seen below:

Some additonal links include the Taylor Massey Project and Lost Creeks of South Etobicoke both smaller scale projects highlighting areas of Toronto lost creeks.  Also, more recently, Trevor Heywood posted a long series of walks on Twitter, with his explorations around the Yellow Creek, showing that the passion for exploration of Toronto hidden creeks is alive and well.  On that note, few more interesting images in the form of murals, first posted by @SheilaBoudreau of a Lost Rivers mural I’ve seen a bit; the second a map, posted by @tashmilijasevic both locations unknown to me but i’m sure folks in the area know where they’re at.

 

A Photographic Abundance

Photographers become drainers seems to be a theme in many cities.  In addition to Michael Cook from The Vanishing Point mentioned above, another photographer focusing on underground Toronto is Jeremy Kai, (Twitter @RiversForgotten   From his site: “His underground photography explores the concepts of urban watersheds and the methods in which cities interact with water and waste water. These processes go mostly unobserved by the general public. Kai hopes that by documenting the city’s lost rivers and overlooked spaces beneath the streets, he can awaken a new sense of mystery and mythology in the minds of urban dwellers everywhere.  His first book, Rivers Forgotten, is published by Koyama Press. It was released December 2011 and features his underground photography”

In a different bent is a recent exhibit entitled ‘Nine Rivers City’, From the site: “From west to east, nine rivers feed into Lake Ontario. View a map of the rivers here.  Harbourfront Centre has commissioned six contemporary visual artists to capture the complexities of each of these waterways that run throughout our urban landscape. Situated against the shoreline of Lake Ontario, NINE RIVERS CITY showcases how these extraordinary waterways connect us, attract us and mystify us.”  A clickable map showcases photographs spatially, such as Aaron Vincent Elkaim’s HWY 401 below:

The Don River East branch flows below the King’s Highway 401, also known by its official name as the Macdonald–Cartier Freeway, near Leslie Street by Havenbrook Park. The Don is formed from two rivers, the East and West Branches, that meet about 7 kilometres north of Lake Ontario.This section of Highway 401 passing through Toronto is a near constant river of cars, and is considered the busiest highway in North America.

Another take on this is Kathy Toth, who formerly had a page on her website ‘Watercourse (Buried Creeks)’ which seems to have been taken down, but does delve into the subject matter with her Hidden Toronto work, which aims to be reprinted soon.  Per her page: “The first edition of Hidden Toronto featured a selection of hidden infrastructure locations in Toronto, including bridges, drains and rooftops where graffiti has sprung up. Many of the locations are off the map and can be found with some searching or luck. Some of them are right downtown under foot, others are on the edge of greater Toronto area. I decided to showcase these spaces, and the artwork painted on them because they exist in an extremely narrow circle of composed of graffiti artists, a few photographers, and the odd individuals who either live in the surrounding areas. These environments have a unique character and the artists who work here take advantage of the serenity and isolation afforded by these surreal landscapes sometimes just 100m away from busy roadways.”

Can massive computing power and artificial intelligence crack the code of deep history of places? This is a fundamental question of a project discussed in an article on nature.com “The ‘time machine’ reconstructing ancient Venice’s social networks”. Frédéric Kaplan plans to “…scan documents including maps, monographs, manuscripts and sheet music. It promises not only to open up reams of hidden history to scholars, but also to enable the researchers to search and cross-reference the information, thanks to advances in machine-learning technologies.”

The Venice Time Machine can link citizens and businesses with historic maps of Venice, such as this sixteenth-century view of the city. Credit: EPFL/Archivio di Stato

The goal is to crunch enough data to outline the connections that emerged in historical societies including “social networks, trade, and knowledge”.  While of interest to historians, it could also inform economists and epidemiologists, as well as other disciplines.  Much like Rome, Venice, mentioned as “The Serene Republic“, is a good for this endeavor due to the wealth of knowledge and its organization, aided by its protected lagoons and it’s desire for documentation.

“As Venice’s empire grew, it developed administrative systems that recorded vast amounts of information: who lived where, the details of every boat that entered or left the harbour, every alteration made to buildings or canals.”

While there was been study over the years, much of the archive “…predominantly written in Latin or the Venetian dialect, has never been read by modern historians. Now it will all be systematically fed into the Venice Time Machine, along with more unconventional sources of data, such as paintings and travellers’ logs.”

Kaplan’s interest has been to employ AI for lingustics, so the concept of using machine learning to study patterns in language is fundamental to the work, along with digitization of many thousands of pages of documents, building on work already done by the Italian Ministry of Cultural Heritage.

There’s a lot more about the linguistic ‘hacking’ of documents, as illustrated below, but the concept also involved diving into the archival cartography.   “In 2006, a huge, purpose-built scanner began to digitize the archive’s precious store of more than 3,000 maps of Italian towns, including many commissioned by Napoleon. These ‘cadastral’ maps delineate property boundaries and record the ownership of small parcels of land; some of the documents are as large as 4 metres by 7 metres.”

The result is the ability to create some amazing detail with overlay of multiple sources:

“One cadastral map of Venice that he commissioned in 1808 has provided a backbone of reliable data, allowing historians to add geographical context to a 1740 census that lists citizens who owned and rented property in the city. By combining this with 3D information about buildings from paintings such as those of Canaletto, the time-machine team has produced an animated tour through Venice, showing which businesses were active in each building at the time.”

A video on YouTube outlines the ambitions of the project.  From their summary:  “The State archives of Venice contain records stretching back over a thousand years. The vast collection of maps, images and other documents provide an incredibly detailed look into Venetian history. This could be used to create a kind of virtual time machine for historians and the public to explore the city.”

What implications does this have for hidden hydrology?  To me, the overwhelming task of both digitizing information and determining patterns is something that is daunting for a team of professionals, much less individuals looking to glean discoveries from their local place.  The sheer effort and technology in digitization and analysis could be employed to discover key linkages and patterns that may illuminate historical hydrology, topography, and other clues.  An example mentioned in the article highlights the concept, using animations to look at spatio-temporal change , in fact “One is a dynamic video of the development of the Rialto from AD 950 onwards, using diverse sources of information at different time points. The simulation shows how the buildings — and the iconic Rialto Bridge — sprung up among the salt marshes, along with the area’s periodic destruction by fires and subsequent reconstructions.”

The possibilities with large data sets is intriguing, and the article mentions cross-disciplinary opportunities, as well as larger connections to other ‘time machines’ in cities, such as a new effort in Amsterdam and possibilities in Paris.  It adds a dimension of big data as a potential avenue for exploration, yet is tempered by age-old techniques and cautions of the next shiny object.

“The unbridled ambitions of the time-machine project are a concern for some researchers, not least because many of its core technologies are still being developed. “The vision of extending digital representation into different time slots is absolutely, self-evidently right — but it might be better to develop things more in a lot of different, small projects,” says Jürgen Renn, a digital-humanities pioneer and a director at the Max Planck Institute for the History of Science.  Nevertheless, Daston suspects that the time machine heralds a new era of historical study. “We historians were baptized with the dust of archives,” she says. “The future may be different.”

Header image via: nature.com

The first of what I hope are many field trips and investigations is now up on the site in a section called Explorations.  This will be the location for these site-specific journeys, and will be augmented with maps, narratives, soundscapes, and images layered to tell the Water Stories of these hidden streams and buried creeks.

For this initial foray, in Seattle, it was immense fun to wander the areas north of Green Lake and discover the history of Licton Springs. As you see from the map below, the historic routes show a stream flowing southwards into Green Lake.  The reach of the waterway starts around Licton Springs Park, where it is sees daylight for a stretch, along with some other intermittent segments where it pops up in surprising ways, throughout the neighborhood.

The story of Licton Springs focuses on the significance to Native Duwamish peoples, who celebrated the place and it’s spiritual, reddish, iron-oxide infused waters, and to early settlers, who lived and recreated, bathed in thermal pools, and bottled and drank of the healing mineral waters.

Like many places, the history of how the place evolved and how it was maintained is of interest, but the journey of the now and the experience of a day of exploring the edges, the muddy margins, and the sloppy seeps (lost shoes included) connect the history of place to the experience of today.

Beyond the park, there are a number of other discoveries that paint a story of people and place woved together through the flow of water.  Discovery of the story of Pilling’s Pond, a small section carved out of the flow of Licton Springs to provide a sanctuary where Charles Pilling became a world expert duck breeding in the middle of Seattle.

The discoveries also include a unique segment of stream fronting Ashworth Avenue,  a single residential block with driveways and fences literally bridging over the final daylit segment of of Licton Springs, showing how each owner shaped, or left feral, their little piece of the wild.

The connection as well with the virtual, with the final connection is made to Green Lake.  Now only connected via overflow, the tracery of Licton Springs, imagined perhaps in some abstracted water play forms, swales, and cascades, may still be allow the creek to be evident, if only in our imagination.

The link below expands on this summary, so check it out, go out and explore, and come back with some water stories of your own.

READ THE FULL EXPLORATION OF LICTON SPRINGS

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Continuing to cover the range of cities with active projects and people investigating hidden hydrology, I return to Indianapolis, which i covered a bit in my early post on Ben H. Winter’s novel Underground Airlines.  The subject of the novel and post focused on Pogue’s Run, a buried creek that served as the locus for a pivotal scene in the novel.  The specifics can also be gleaned from the Atlas Obscura post “You Can Follow a Hidden Stream Beneath Indianapolis—If You Know Where to Look” here for more context on this, which originally was the tip off on this great story.  And definitely, beyond the hidden hydrology reference, the novel was one of the best I read last year.

As with most cities, one river or creek seems to dominate the imagination, and Pogue’s Run is that for Indianapolis, with a number of historical ruminations, such as Historic Indianapolis, which showed a etching by Thomas B. Glessing of “Surveyors mapping the new capital in 1820”, and noting that the stream was probably Pogue’s Run.

In the course of finding out about Pogue’s Run, a number of other interesting people and projects emerged from Indianapolis.  Below are some summaries

Stuart Hyatt

A main feature of the original article, beyond Winters’ book, is the photography and music of Stuart Hyatt, who has documented the underground stream in depth.  A few of his photographs from the previous post, along with links to the video of his band Field Works, whose album is aptly titled ‘Pogue’s Run’.

A video connects the music to place, which “follows a humble waterway through urban neighborhoods in Indianapolis. From its source, through the city, into a mysterious three-mile underground tunnel, and finally to the White River, Pogue’s Run represents the ongoing tension between nature and civilization.”

Charting Pogue’s Run

Artist Sean Derry’s work “Charting Pogue’s Run” investigated the creek via an 1831 map, with a thin line of blue paint and cast iron marks woven through.

A bit of description (longer version on his site):

“Charting Pogue’s Run investigates the past and present characteristics of Pogue’s Run as it flows from the Neareastside neighborhood to its confluence with the White River south of downtown. Beginning on E. New York St., along the boundary of the Cottage Home neighborhood, a blue line and small iron markers map the stream’s 1831 path through the city. This addition to the city-scape traces the streams meandering path across 4.5 miles of Indianapolis.

The work, along with Hyatt’s,  was covered as part of the free workshops, “Rethink, Reconnect, Reclaim”, which “explores creative approaches for improving Indianapolis”.  See a video of the project here:

StreamLines

A surprise was finding the comprehensive Streamlines project, led by environmental artist Mary Miss, a continuation of her legacy of environmental art, in this case “StreamLines is situated on five sites, in diverse communities along tributaries of the White River. Miss’ sculptural elements reveal the natural systems and infrastructure that impact the Indianapolis waterways and encourage exploration of the area.”

Apart from site specific art: “StreamLines is an interactive, place-based project that merges the sciences and the arts to advance the community’s understanding and appreciation of Indianapolis’ waterways. This work is made possible by a grant from the National Science Foundation and is modeled on the City as Living Laboratory/FRAMEWORK.  StreamLines features art created for specific sites along six Indianapolis waterways of focus to Reconnecting to Our Waterways (ROW): Five environmental installations by Mary Miss/City as Living Laboratory® (MM/CaLL); A series of dance performances by Butler University Department of Dance; Six musical compositions curated by Michael Kaufmann/The Kinetic Project; A collection of poems penned by Indiana poets selected by Poets House”. 

A diagram of the concept of her site specific installations, which include similar themes, as noted, around the concept that ‘Rivers are the Lifelines of our Cities.”

Along with some of the installations themselves, which are place based but tied together thematically.  An excerpt from her site “At each site, the three states of water – ICE, VAPOR, WATER are written on the surface of the mirrors. Words on the ground express the themes of each different location. They are formed of reverse letters, which are legible in the reflection in the mirror above.  Site themes address water and its many states in the environment, the importance of water to Indianapolis’ development and history, water infrastructure and the connection to the watershed.  At the outer edges of the installations, smaller mirrors (18” in diameter) and small pedestals in groups of two or three present texts, much of it legible only in reflection, such as poetry, scientific and historical facts, riddles, jokes, prompts, and questions. These texts also direct visitors to the app and website for additional information.”

The markers and poetry are located in and around installations, circling back to the formative river, the poem “Pogue’s Lost Horse” by Catherine Bowman connect to the place in other ways, through words, visions, and rhythm.

The dance and musical numbers are available on the site and best captured in video, as well as the Streamlines Vimeo page, which also has interviews and other info.  One of my favorite is the ‘Choreographing the Movement of the Waterways’, described here: “This video explores the story behind the dance component of StreamLines. On September 24, 2015, more than 100 members of the Butler Ballet performed Riverrun, a site-specific dance choreographed by Butler University Dance Professor Cynthia Pratt for the StreamLines project. This dance was part of the programming for the project’s launch and performed in Holcomb Gardens on the campus of Butler University. The site-specific art invites the community to learn, explore and experience the science of Indianapolis’ water systems”

There’s also a video delving into the work on the musical composition and soundscape, and “explores the story behind the six musical compositions of StreamLines. Curator Michael Kaufmann worked with six musical artists – Olga Bell, Hanna Benn, Stuart Hyatt, Roberto Lange, Matthew Skjonsberg and Moses Sumney – to create the sound art for StreamLines. The site-specific art invites the community to learn, explore and experience the science of Indianapolis’ water systems”

Beyond Pogue’s Run, the work draws from a variety of local waterways, as mentioned in this post from Next City“The White River flows through downtown, joined by Fall Creek, Pogue’s Run, Central Canal, Pleasant Run and Eagle Creek, many of which also flow through Indy’s most underserved neighborhoods.”  Part static placemaking and part events, there is a simple google map to locate the places included.

It’s really interesting to see how Indianapolis expresses the connection to lost waterways and hidden hydrology primarily through art, spanning literature, dance, poetry, music, and environmental installations.  It showcases the diversity of means to tell these water stories – technical, mapping, ecological, historical, artistic, designer, and provides a unique snapshot of a community, it’s rivers, and how each are shaped, and shape one another.

 

Week three of the Waterlines class featured Seattle writer and geologist David B. Williams.  Perhaps best known as the author of the recent ‘Too High and Too Steep’, a chronicle the large-scale manipulations (topographic and hydrologic, to name a few), Williams shared a more focused talk on his upcoming book Waterway: The Story of Seattle’s Locks and Ship Canal, which coincides with the Centennial of the Hiram M. Chittenden Locks this year.  Following the course theme, and touching on some previous topics, the story encompasses the trials and tribulations to get the locks built, and the large-scale impacts that such endeavors have on the ecological and hydrological systems of Seattle.

David is an engaging storyteller, so he laid out the evolution of this significant part of Seattle’s history, touching on the geology (with the north south orientation how important the waterways were to getting around, especially, east-west movement), and the use for years by native people, who used the portage between Lake Washington to Lake Union, and then a quick connection to gain access to the ocean, and vice-versa, for the past 10,000 to 12,000 years, with stories of Kitsap Suquamish coming to Lake Washington because it was one of the largest freshwater lakes in the region.  The idea of a ship canal of some sort is as old as Seattle itself, first pitched by Thomas Mercer in 1854 and finally coming to fruition as a way to move coal, timber, and people, after many attempts 63 years later.  In fact there were multiple routes proposed and attempted with big Seattle names like the aforementioned Mercer, along with Burke, Denny, and Gilman, cutting through Smith Cove, routes across what is currently downtown, and one of the most absurd in Seattle’s history – the Semple Canal.  This map shows a number of these routes, and also the one natural, yet not very viable connection vai the Black River, which was mentioned in the previous post on Seattle archaeology as outlet from Lake Washington and would eventually fall victim to the draining of Lake Washington.

By Dennis Bratland – Own work, CC BY-SA 4.0,

As mentioned, Semple’s Canal was perhaps the craziest scheme, wanting to slice through one of Seattle’s seven hills, Beacon Hill, which stands almost 350 feet tall.  Williams documents it on his blog in this post, with a couple of graphics showing the route and section cut (noting a maximum cut of a mere 284′-6″), highlighting the absurd notion of cutting a canal through a hill, although a good portion of the material removed from the canal before it was shut down was used to fill the Duwamish estuary into what is now industrial lands, and frankly, based on some of the other history, it would not have surprised me if this would have happened.

The eventual route of the Canal was landed on eventually towards the end of the 19th century, connecting to the Puget Sound through the existing Shilshole Bay and the eventual location of the locks, connecting through Salmon Bay, which was a fluctuating saltwater tide zone, connecting through the Fremont Cut to Lake Union, and the Montlake Cut connecting Portage Bay on the west with Union Bay and larger Lake Washington on the east.

The conditions prior to implementation show Salmon Bay connected to salt water, and involved slicing through Ross Creek and wetland zones between Salmon Bay and Lake Union, where a creek was feeding the Bay.  To the east the portage had become a narrow log flume at the narrowest point connecting Union Bay and Portage bay, completing the connection from lake to sea.

As mentioned, the eastern Montlake Cut was used as a log flume with a narrow channel (developed by Denny and others) connecting through Portage Bay, and a similar effort was made to connect through Ross Creek via what is now the the Fremont Cut.  A photo showing the area looking from Union Bay towards the west from Paul Dorpat’s blog showing the isthmus with Portage Bay in the distance prior to ship canal.  This area was sliced through with a log flume (seen on the 1894 map above) in the 1880s and at times through the early 1900s to move timber from inner areas to Seattle and beyond, setting the stage for the eventual connection.

A second image showing the narrow connection of the log sluice from 1886 that is seen on the 1894 map, one of the thin connections which eventually were expanded for free flow of goods and people across Seattle.  A dam at the upper end held Lake Washington above the level of Lake Union, and logs were dropped into this chute to float on the next leg of the journey.

While the connections seem logical, the elevations of each water body were different, with the level of Lake Union around +20, the level of Lake Washington at +29, and Salmon Bay elevation lower as it entered the Puget Sound, often not having standing water at times.  The process of building the locks set all of these elevations at the same as Lake Union, which raised Salmon Bay and made it a continuous fresh water bay, which is why it works as a place to over-winter fishing fleets as it is today (see Deadliest Catch) to keep boats out of salt water.  It also lowered Lake Washington, which as mentioned disconnected the lake from it’s natural outfall at the Black River to the south, replumbing the south area of Seattle while creating a whole lot of new lakefront land.  The completion of construction of the locks and the eventually breaching of the Montlake coffer dam (below) and the other coffer dams at the Fremont Cut, (after having to shore them up a few times), filled Salmon Bay with fresh water, and caused Lake Washington to drain down the 9 feet slowly over a few months

The locks, which opened to fanfare and massive 4th of July celebration in 1917, are fun to visit today to watch ships come in, go to the fish ladder, and see the activities.  According to Williams, these are the only government locks in the US that are crossable to the public (didn’t know that) and the main traffic, although peppered with an occasional working vessel to Portage bay, consists mostly of pleasure craft.  Also, while they did originally build a fish ladder, it didn’t work well (and was improved years later, which make a fun viewing opportunity).  Williams mentioned that fish tended to just get into the locks and ride up to travel upstream.  It’s an interesting resilience story that fish that were cut off from the Cedar River where they spawned when the Black River was disconnected, and instead of heading up the Duwamish/Black/Cedar to the south, would still be able to figure out how to get upstream via alternative routes via Shilshole miles north from their original spawning route. Talk about a well established navigation system.

The impacts for Seattle, much like the other massive changes, ended up having huge economic implications in positive ways, with the ability to tap into industrial lands for coal, timber, and shipbuilding, and some minor military use, along with what are mostly now marinas for pleasure craft today.  The fact that maritime industries are only second to aerospace in the Seattle economy is surprising, which owes much to the ship canal.  Seems a common story for Seattle, make massive change and reap the benefits (to some), even if it cuts off a river that happens to be the home place for local Native people.  To comprehend the 60+ year journey from idea to fruition, and the hundred years of operation since, another story of changing land and waters influencing our urban lives every day. Excited to see some of the events and read David’s upcoming book for more.  On that note…

Addenda: Making the Cut

A great resource on the upcoming centennial festivities is the website Making the Cut: The Locks, The Lakes and a Century of Change, which provides info on events, much of the history mentioned above, and a good section on historic maps which shows a good cross section of hidden hydrology in relationship to the hydrological manipulations to connect the lakes to the ocean.  A series of before and after maps documents the changes in the locks, Lake Union and Lake Washington, and other areas.  The series below highlights the evolution from the tidal marsh of Salmon Bay prior to the locks being installed in 1916 to the freshwater waterway today.

Salmon Bay – Today
Salmon Bay – prior to 1916 | Blue = Water |  Green = freshwater wetlands | Pink: saltwater wetlands | Brown: intertidal areas (or tidal flats)

 

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Last week was Part 2 of the Waterlines class, featuring archaeologist Dennis Lewarch, Suquamish Tribal Historic Preservation Officer, with a concept of ‘Before the Cut’.  This was an exploration “using archaeological, ethnographic and historical data [to discuss] the effects of shoreline transformations on indigenous populations.”  Similar to the first class, the depth and breadth of the cultural history, and his more expansive title ‘Archaeology and Ethnographic Background of Seattle and Prior Massive Anthropogenic Modifications” hints at the depth of this topic.

Lots of details here, but the idea that in the past 14,000 years of occupation by native peoples, after migration from the north via the Bering Land Bridge and along the outside edge of the ice.  There are various theories, but that the retreating glaciers opened up a path between that allowed access, and continuous occupation is found throughout the Northwest in archaeological sites 12-13000 years of age. Once here, the land has changed via sea level rise, mudflows, earthquakes, tsunamis, subsidence, alluvial processes, and more.  The story is thus the land shaping people, and the people shaping land.  The defining characteristics of the different tribal groups are called adaptions, and place origins of geography, such as the Saltwater adaptation, particularly the Suquamish who lived near the sea, versus the Riverine adaptation, the Duwamish people who lived near the river.  Other adaptations are tied to lakes and inland/upland areas, all of which collectively shape the speech, family community, and cultures.  For Lewarch’s presentation, the focus discussed a larger history of regional indigenous occupation of the Seattle area, with focus on some of the areas near Seattle that had significance.

Black River Origins

One of the main points of origin for Duwamish people, based on the above adaption, is the Black River, where four original villages were located.  An excerpt from the 1909 USGS Topographic map of the area shows the former drainage, where the Cedar River flowed in from the east, and the Black River drained the south part of Lake Washington, near Renton.  This confluence also was fed from the south by the former route of the White River, as all of it flowed into the Duwamish and out to the Sound.  The names of the settlements of the ‘People of the Lake Fork’ and the inhabitants near the Little Cedar River, and their evolution in living off the land and the river ecosystems for many years.

The demise of this home place began with channelization of the Cedar River into Lake Washington, and ended he lowering of the lake when the Hiram M. Chittenden Locks were built in 1916.  The elevation of Lake Washington was lowered nine feet, to the same as Lake Union, which severed its outflow to the Black River, captured in the photo below shows the river after the lowering of the lake, where it slowly died and has (mostly) been subsequently buried.  For more on the Black River history, a short blurb on this from David Williams here. 

 

The map from the Wikipedia page on the Black River also shows the before and after and the erasure of the original location of Duwamish settlements through reconfiguration of the hydrology of the region, another in a long line of massive manipulations in the region.  The Duwamish People were living in the area, and continued to do so, even as the Black River was dying.  They were relocated to reservations, and as Lewarch mentioned, they were sent to coastal areas near the ocean, and being a river tribe, kept returning to the river to fish for many years after, where they lived on a property owned by Erasmus Smithers, until it was burned in 1896.  There’s inevitably a long history of settlement and resettlement and disenfranchisement throughout recent history I’m glossing over, but the idea of a river tribe not having a river seems par for the course of how tribes were treated.  Secondary to this, the subtle differences between different tribes were not recognized, with many Suquamish or other tribes in the region being lumped into the Duwamish by colonists.

Duwamish River

The Duwamish River obviously had a significant place in the history of this river tribe, and the estuary connected the river people with those of the sea and the density of place names in that zone .  A number of archaeological sites amidst the oxbows of this area.  The 1899 US Coast Survey shows the bay and larger estuary, with the area of downtown Seattle starting to build out, but prior to the majority of the land filling to come.

A map of these old configuration juxtaposed with the channel that exists today shows the level of land filling and manipulation done to this area to carve out industrial lands.  From the fantastic Duwamish Revealed site: “About 100 years ago, the Duwamish was straightened and dredged, reducing 14 miles of winding river to 5 miles of industrial “waterway.” Nearly all of the native habitat – mudflats, marshes, and swamps surrounded by old growth Cedar, Douglas Fir, and Hemlock trees – was replaced by agriculture, then industry.  The Duwamish is home to three Native tribes: The Duwamish, the Muckleshoot, and the Suquamish, and has immense cultural importance to them. The word “Duwamish” is an Anglicized version of Dkhw’Duw’Absh, meaning “people of the inside” in Lushootseed, the language of the Coast Salish people.”

Ballast Island

While native peoples were instrumental in building the city and working in it’s saw mills, fisheries and other industry, rapidly changing Seattle began to try to eliminate the native residents of the city, passing laws in 1863 to make it illegal for Indians to live in Seattle unless they worked for whites, villages and settlements were burned.  Native peoples moved north as development occurred, and tended to stay near the water, occupying places within the network of piers and wharves.  One such place was Ballast Island, formed from ships dumping rocks after their voyages, which slowly accumulated into made land.   A photo from the area shows the colonization of this space by Native peoples, who camped out around the wharfs fringes, being ogled by early Seattlites.  In 1891 they were forcibly removed, one in a string of forced removals that shaped the early history of the area.

West Point & Shilshole

Moving away from downtown, the occupation and history of West Point, the point that was formerly military outpost and now Discovery Park, along with being the massive sewage-treatment plant.  This area was a tidal marsh that was occupied and used, with the formation of sediment along with earthquakes shaping.  When the treatment plant was being expanded, a significant archaeological effort was undertaken, beautifully documented in this online resource from the Burke MuseumShilshole also has a significance to Native Seattle, with the native word meaning ‘threading the needle’ to get into the small mouth that led into Salmon Bay, which was littered with shell middens and other features showing occupation, similar to other areas on the coast.  Prior to the creation of the locks, this area .  One long-time resident was Salmon Bay Charlie.  A great resource for this and other Seattle history is the blog by Paul Dorpat featuring ‘Seattle: Now & Then‘, where you can investigate the area in some more detail.  From the post: “Salmon Bay Charlie and his wife lived in their cedar plank home on the south shore of Magnolia’s Salmon Bay. For half a century Charlie, also known as Siwash Charlie, sold salmon, clams and berries to the first settlers and later to the soldiers at Fort Lawton.  Today’s historical view shows Charlie’s house at the turn of the century, taken by the photography firm, Webster and Stevens.”

A bit to the east, the connection between the eastern edge of Lake Union and Lake Washington is a good discussion of place names, including the connections between Lushootseed, or Coast Salish names and colonist names. This brought up a discussion of the area below,

I rotated the Waterlines map to match the same orientation, and the references to the area marked B, which was a village site named sɬuwiɬ, “Little Canoe Channel” that marked the mouth of Ravenna Creek, where Lewarch mentions there were stories of salmon runs up Ravenna.  There’s also Lake Union, marked as #21, which is called x̌ax̌əču meaning, “Small Lake” and Foster Island, in an area named staɬaɬ or “Baby Fathom” showing that even with a translation there is still a story missing.  Perhaps a shallow zones at the mouth of the creek.  The cut, marked as #18 which is named  sxʷac̓adwiɬ translated as “Carry a Canoe” meaning it probably wasn’t passable as a waterway until later when the Denny’s opened it up as a log-sluice to move timber between the two points.

The conversation of ethnography and language started with T.T. Waterman, who studied local tribal place names in the 1920s, seen in publications like “The Geographical Names Used by the Indians of the Pacific Coast” and the author of the book Puget Sound Geography, which was edited by Vi Hilbert, Jay Miller, and Zalmai Zahir.

According to Lewarch, the notes from Waterman were sort of a mess, so the editors compiled it into something readable, including an amazing figure in Seattle history, Vi Hilbert, a Puget Salish and “a conservationist of the Lushootseed language and Culture”.  While Waterman interviewed a small group of around 25 native people for his work, it generated over one thousand place names.  And as Lewarch mentioned, all of those interviewed said if they had talked to the Elders, they would have ended up with 1000s more, a sad testament to a cultural history lost forever.  Another resource for this is Coll Thrush’s book ‘Native Seattle‘ offers a great section with maps of those place names developed along with Anthropologist Nile Thompson, a snapshot of one below with the accompanying Lushootseed language and origins.  Many of these as I mentioned ended up on the Waterlines map, with more abbreviated descriptions.  The one below shows the NW corner with Green Lake in the center, and West Point, Lake Union, and Salmon Bay, along with areas along the coast marked.

CONCLUSION:

Lots of threads to follow and stories to connect.  In general, the talk focused on the Indigenous cultures and their resilience, both pre-European settlement and after colonization, displacement, and more.  He ended up with a quote from Chief Seattle, and discussion both of the potential misinterpretation of his words by the translator, and whether it was an environmental, or social statement, but the multiple meanings that resonated strongly in Seattle history.   He quoted a passage:

“And when the last Red Man shall have perished, and the memory of my tribe shall have become a myth among the White Men, these shores will swarm with the invisible dead of my tribe, and when your children’s children think themselves alone in the field, the store, the shop, upon the highway, or in the silence of the pathless woods, they will not be alone. In all the earth there is no place dedicated to solitude. At night when the streets of your cities and villages are silent and you think them deserted, they will throng with the returning hosts that once filled them and still love this beautiful land. The White Man will never be alone.”

Chief Seattle’s niece at her Shilshole home, 1901 – via http://www.duwamishtribe.org/culture.html

It could be both a warning or a statement that shows that resilience of Native people wasn’t just in survival, but left a permanent mark on the landscape and people.  The culture and place of what Seattle is and the way we should live is etched in history and resonates in the places dotting the map of Seattle, including waters visible and hidden.

ADDENDA:

A preliminary presentation featured Amir Sheikh, one of the primary collaborators on the Waterlines Project, and he discussed much of the history and process of the overall project and methodology along with framing the concept of place names using Lushootseed language, as featured on the Waterline maps (see my post on language here).  One video he showed was “Djidjila’letch to Pioneer Square: From Native village to Seattle metropolis“, a video which takes the viewer “…from Native village to metropolis, the Pioneer Square neighborhood of Seattle has undergone dramatic transformations. This animation provides a bird’s eye glimpse at some of the social, economic, and landscape histories of the neighborhood through time.”

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If you haven’t had a chance to check out the installation ‘Calling Thunder: Unsung NYC’ it’s a fantastic example of using digital storytelling methods that connect with hidden hydrology.  The project extends the work of the Welikia Project. which provides ecological history of New York along with some great visualizations of pre-development in the form of maps and 3D graphics.   A little background comes from the article in the NY Times from April 25th, ‘The Sounds of ‘Mannahatta’ in Your Ear’:

““Calling Thunder,” is an aural bridge across four centuries. It builds on Dr. Sanderson’s stunning work, with Markley Boyer, in creating visualizations of the rolling landscape of 1609 Manhattan — known by the Lenape people as Mannahatta, “the island of many hills” — that are twinned with photographs of the same points in the modern city. We see hills and streams at places now occupied by skyscrapers and subway tunnels; a red maple swamp where an H&M store stands in Times Square.

Drawing on the work on Mannahatta, the immersive video and 360 video and soon VR animate the lovely maps that populated the original books.  As one moves through the pre-1600s aerial imagery, it transitions to the modern cityscape,  The visuals showcase the heart of the book “…published in 2009, and its classic, bookly virtues — visual beauty, wit and imagination, all underwritten by deep scholarship — persuasively deliver its most astounding revelation: Manhattan in the 17th century had more ecological communities per acre than Yellowstone, more than most rain forests or coral reefs.”

The soundscapes are the best part, a collaboration between “… Bill McQuay, a former sound engineer with NPR who is now an audio producer with the Cornell Lab of Ornithology, and David Al-Ibrahim, an interactive storyteller and graduate student at the School of Visual Arts.”   Using sounds from the Macaulay Library at Cornell, the soundscapes piece together species, for instance, in recreating the Collect Pond, the species of American Crow, Marsh Meadow Katydid, Bullfrog, American Bittern, Baltimore Oriole, and Black-capped Chickadee are culled from the site specific ecologies of Welikia and the range of possible species present, which is a fascinating way to experience the site.  A snapshot of the area near the Collect Pond Park shows a wide range of species to drawn sounds from,

 

I was a bit disappointed with the visuals that accompanied the soundscapes, simple, abstract, placeless sketches that distracted, more than accentuated the experience.  Looking around, one wished the simple site-specific scenes were rendered in the same graphic style as the larger renderings, only more animated scenes with residual movement, wind, rustling leaves, and environmental cues that evoke the historical places, perhaps transitioning between new and old.

Maybe a fitting next stage for the project, a simple immersive VR experience could be done without a lot of work, but the sketches aren’t going to cut it.  The goal of capturing a vision of what was and what is, with a measure of interactivity that heightened awareness of the habitat sounds would be attainable, as seen through the myriad .  I found that closing your eyes and immersing in the sounds was the best way to experience this.  The dilemma is hinted at in the article: “At first, Mr. Al-Ibrahim said, he considered presenting only the sound from each of the sites. “It turns out people don’t respond well when put in pitch blackness with a headset on,” he said. By offering readers and listeners the choice of technologies, the project sidesteps the trap of endorsing one storytelling technique to the detriment of the actual message.”


The method of disseminating historical ecology, and pair the experience with soundscapes showcases.  As a quote from Sanderson mentions, which is clear from the work on Welikia and Mannahatta, the abundance of species. For a city known as one of the most dense and urban, the previous natural resource is somewhat surprising.  This is the beauty of connecting the past and the present.

As mentioned, “The Unsung website offers various ways to take in the weave of history, research and informed speculation in “Calling Thunder,” each with its own rewards: as a simple audio recording, 360-degree video, or, coming soon, virtual reality.”  I can’t wait to see the next installment and appreciate the inspiration of full-sensory experiences.

A great kickoff lecture to the Waterlines class at the Burke Museum featured noted regional geologist and retired UW Professor Dr. Stan Chernicoff and his exploration of The Origins of Seattle’s Landscape.  Having read a bit about the local geology over the years, and having experienced some specifics (particularly the glacial till in Seattle) in my work, I had a rudimentary understanding of the general picture in our region.  Thanks to this lecture, and the philosophy that ‘dynamism is key and change is inevitable’ espoused by Chernicoff, I know a lot more and think about the region in new ways.  From his lecture, I found some interesting links between the larger and longer scales of geologic time and it’s relevance to the Hidden Hydrology project.

His lecture loosely focused around the concept of changing Waterlines around the region, and organized his talk to be roughly chronological and covered a lot of ground – from 1.1 billion years into the past to 250 million years into the future.  Much of the beginning conversation was looking back at the time when Seattle was not coastal but inland as part of the Rodinian Supercontinent (one of the pre-Pangean configurations) and the coastal accretion of lands from the final supercontinent (where to coast was originally at the MT/ID border), and the lands that were added over the past 150 million years (Okanogan Mountains, Cascade Mountains, San Juan Mountains and most recently the Olympia Mountains) through lands being drawn in through subduction.  This means that Washington and Oregon are mere infants in the larger timescale, as Chernicoff mentions, compared with the larger geological history.  The key diagram he showed here is the overlapping sections of the subduction zone in the Juan de Fuca plate and the location of between the Olympics and the Cascade Mountains, with the layers levels and timelines of geological traces over the past 50 million years..

The bit of trivia that Seattle is sitting atop the Olympic Mountains – as you can see by drawing a line through to the Crescent Basalts below us.  The evolution from the last 40 million years in shaping the zone, through Volcanic mudflows (yeah, there was a volcano called Mt. Seattle somewhere near Issaquah) that left lahars 40 million years ago.  This was followed by periods of inundation, and when the land was warm and swampy, which left the deposits of coal near Renton (an interesting Puget Sounds coal history where we ended up shipping to San Francisco).  The marine heritage is also found in the prevalent Blakeley formation, which evolved from a shallow marine estuary from submarine landscape deposits 30 million years ago – and today one can still find fossil shells around many places in the Puget Sound.

There are some interesting facts that illuminate this history and dynamic story of change.  First, while the larger geology set the stage and influences the form, the current lakes, and rivers were a product of the latest glacial period, which Cordilleran Ice Sheet covered the area and the Puget Lobe formed the shape of the current region.  The glacier was around 3000 feet thick, which pushed the sound down almost 1000 feet, and created the depression that allowed water to flow in and formed the modern position of waters.

The rule of thumb is the thickness of depression will be 1/3 the thickness of the glacier.  An interesting section (see right) showing how this cap of ice carved out Puget Sound nestled between the Olympic and Cascade Ranges –  with linear scoured channels forming Hood Canal, Puget Sound, Lake Washington, Lake Sammamish, and created the terrains which Seattle occupied.  These were all relatively north-south oriented which coincides with the intrusion and recession of the Puget Lobe.  It is amazing to think of the larger glaciers in the Midwest, such as Minnesota, which were 3 miles thick and the impacts on that landscape, which for my knowledge, creates the rarity of the north-flowing Red River through where I went to college in Fargo, but also created the over 10,000 lakes that dot the region.

Second, is that because of the glaciation and recession, most of the hills in Seattle are glacial drumlins, (with the exception of West Seattle and Magnolia which are drift uplands).  These hills were deposited upon glacial retreat, which gives them a distinctive steep north side and smoother south side, with alignment north-south as well as the long side corresponds to the direction of ice flow.

You see this in the larger hills in Seattle, as well as the creation of the individual creeks that are woven throughout the north section of the city. The topography carved these smaller drumlin shapes with drainages forming in the spaces at edges adjacent to lakes or between two hills. This formed unique geologic features like like Seward Park in the south section of Lake Washington.

A shapshot of the 1894 USGS Topo map shows the formation on Queen Anne (left) and Capitol Hill (right) with the steeper north edges, along with what is still showing the remnants of Denny Hill south before it and other topographic features were removed from the downtown area.

Third, the two smaller lakes in North Seattle, Bitter Lake and Haller Lake, are true kettle lakes, formed with glacial retreat.  A hybrid of this is Green Lake, which also formed in the glacial retreat along with Lake Union and Lake Washington. Fourth, the glacial movement left a trail of glacial erratics all over the area, and I learned about one of the largest, the Wedgwood Rock, which originally was from miles north and now sits in NE Seattle.  Definitely worth a field trip in the near future.

Fifth, the glacial deposition led to a preponderance of landslides, both with steep slopes, along with the layers of permeable Esperance Sand sitting atop a layer of Lawton Clay, which causes water to flow under the sand and create a slip zone (shown on right side of diagram below).

This is exacerbated by the copious winter rainfalls, which exacerbates the issue via critical liquifaction zones, which  means “…a phenomenon whereby a saturated or partially saturated soil substantially loses strength and stiffness in response to an applied stress, usually earthquake shaking or other sudden change in stress condition, causing it to behave like a liquid.”  Thus the landslides and earthquakes have shaped the hydrology over time, as valley configurations shift with deposition from streams but also are influenced by these disturbance regimes.

The Magnolia Neighborhood is one of those areas where it has overlapped with the danger of building on steep/unstable slopes, as shown here in a wikipedia image of a slide in 1954 on Perkins Lane, a relatively frequent occurrence in Seattle in particular areas over the years.  Chernicoff’s hint:  Don’t by a house there.

The final part of Chernicoff’s talk focused on the ‘Rise and Fall of Seattle’, with a theme that in our dynamic and ever-changing landscape, “we can’t get accustomed to where water is”.   He mentions four factors that will influence the geology of Seattle, including Local Geology, Regional Tectonic Factors, Regional Isostatic Factors (i.e. glacial rebound), and Global Eustatic factors (i.e. sea level rise).  This was interesting, as the local conditions were all creating conditions that led to raising lands and lower levels of water.  For instance, the two local geological factors were river sedimentation and landslides, both of which add land particularly at the deltas of larger rivers, such as the Skagit and Nisqually Rivers.  As Chernicoff put it, through those two factors, the entire Puget Sound is trying to fill itself in.  The regional factors of tectonic activity are at work, with quakes occurring regularly, which can instantly change the shape of our landscape through an earthquake.  A slower mechanism continues to shift land with raising land due to glacial rebound, bouncing slowly back from being compressed by glaciers thousands of years back.

Inevitably, for all the minor modifications of local and regional factors, the larger impact is, wait for it… yep, global change, in particular the shifts associated with climate change.  The melting of remnant ice sheets in Greenland and Antarctica, warming causing the thermal expansion of water combined to create higher levels, and lead to massive impacts on the waterlines of Seattle and everywhere else.  He showed as an example a slide of the map Islands of Seattle, a great project by Jeffrey Lin (inspired by the original Burrito Justice San Francisco Archipelago map.) which hypothesized on melting of all global ice, including the Antarctic, which would result in a 240′ rise in sea level, creating a very dramatic new waterline and hydrology for the City.

For Chernicoff, it wasn’t a question of whether this would this happen or not.  His geologists time lens is long and he knows there will be large-scale global shifts.  The question is yes, however, does the time scale of this inundation take 30 years, 500 years, 10000?  It’s an interesting juxtaposition of of deep, long geological time coupled with the dangerous (but possibly earth saving) agency of humans in creating changes in rapidly shorter and shorter time scales, via anthropocentric factors.  While we rightly fret over our fate and try to come up with solutions, the idea of dynamism and constant change is a good perspective. In the end, geological time and processes will, it seems, always win, if we’re around in another 250 million years we can experience a new shift to a larger subcontinent, as the Pacific is getting smaller and the Atlantic is getting bigger, so our coastal woes will change when we’re in the middle again.  Full circle.

This has some implications, obviously for connecting history to present and future, as we are constantly chasing moving targets when we deal with landscape and water.  How will these changes impact our understanding of historical conditions with current ones?  At the short time scale we are considering, does it matter?  Will rapid global and local changes impact our opportunities and ideas in which to engage with planning and design interventions?  Something I’ve not ruminated on long enough to have ideas, but more to come.  And more on Waterlines next week.

ADDENDA

As a follow up, a remembered this link from the Burke on Seattle’s Ghost Shorelines links there’s an interesting Waterlines video showing this evolution of the most recent 20,000 years of the sound – since the ice age.

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A gem of a publication semi-related to hidden hydrology by very related to cool maps, is one the US Geological Survey Miscellaneous Investigations Series I-1799, published in 1988, entitled the “Atlas of Oblique Maps: A collection of landform portrayals of selected areas of the world“.  As noted, the maps are all oblique aerials, and range from 1961 to 1986, so are pre-digital.  The ability to represent complex geographic and topography features enlightens many maps of this sort, and the techniques to create this makes for a fascinating read.

Some introductory text from the Preface:

There’s a brief by interesting background for the document and some of the key map-makers, including A.K Lobeck, E.J. Raisz, and P.B. King.  Some of the benefits of this type of map are discussed, including more realism and easier comprehension, and ability maintain scale.  Disadvantages included displacement of features, and hiding of key elements, and a relative inexactness of elevation and location.  I think of many of the maps of cities in the late 1800s that were drawn using similar techniques, which show features in a compelling way, but somehow exist with a tantalizing lack of precision.

The graphic standards used are explained, which allows for some uniformity. (click to enlarge):

The mechanism of the Isometrograph was fascinating, which provides the opportunity to “develop a parallel-perspective framework from a vertically viewed contour map” allowing for three-dimensionality without reproducing hidden lines, something we can easily do today with a number of digital tools, but at the time was pretty incredible.

That said, there’s a ton of interpretation and creativity involved, to take the three-dimensional framework and convert it into a compelling illustration, as noted in the sequence below.

So why should these matter, aside from their value as historical maps. The conclusion sums it up, along with a very prescient commentary on the value and future of mapping in our current age of Google Earth:

“Because oblique maps are instructive and easy to read, they help the scientist communicate with the layman concerning our environment, especially in those areas, such as the sea floor, that are not easily accessible.  With increasing population and all its attendant stresses on the planet, the need for this communication will become ever greater.  Fortunately, in the near future, with new techniques and with the use of computers, the cartographer will be able to respond to this demand and create oblique maps more quickly and more economically.”

A bunch of the examples below show the range of maps – which I count over 100 total, with a vast range in geography from Alaska, Washington and Oregon, California, and many from around the world.  The simplicity and elegance of the black and white showcases volcanic variants in the Pacific Northwest, two of my favorite places, Crater Lake and Mount St. Helens.

Some simple color accents coastal variation, in this case Willapa Bay in Oregon.

And the impact works as well for more urbanized zones, in this case San Francisco Bay.

The ability to use the oblique maps to carve out subsurface geology is interesting as well, in this case showing the Sierra Nevada mountains near Mono Lake.

And the bathymetry also, revealing hidden hydrology of bays and coastal waters.

The maps delve into the diagrammatic, as this one stood out to me.  The image hovering above the map shows the location of underway navigation transponders in the Pacific Ocean off the coast of Mexico.  The squiggly lines show the path of a ship that was mapping the bottom using sonar over multiple years.

The final section of the document highlights what are called ‘Cognitive Drawings’, which are somewhat more familiar slices of topography and geology that often appear in text-books, such as the evolution of river valley from sharper V-shapes to more subtle U-shaped valley systems.

Another hybrid map shows the relationship to the geologic features, in this case Ore deposits in Utah, with some simple accents, again revealing the underlying geological story from below.

The technical aspects of making these maps is admittedly less of a barrier today, but much of what comes from the digital realm lacks the tactile, illustrative quality shown here.  A post in Landscape+Urbanism on the art of Matthew Rangel comes to mind as a similar quality in new work, and the inspiration of graphic quality and communicative value is inspiring.  Worth a long perusal.  Enjoy!

 

 

 

 

 

Mexico City has been featured a few times recently in the New York Times, with a focus on some of the fascinating hydrological history and its implications to modern urban life.  I was very ignorant of the specific characteristics of the city, and while I love Mexico have only had the chance to spend a long layover in Mexico City proper a few years back.  I learned much in these few articles, with a desire to dig deeper as well.

Climate Impacts

An article by Michael Kimmelman from February 17th, “Mexico City, Parched and Sinking, Faces a Water Crisis” is part of the ongoing ‘Changing Climate, Changing Cities’ series and includes a rich interactive experience, along with a compelling long form read (well worth it).

The history of Mexico City as a city has many facets, but two emerge in this context.  First is the concept that the city is built on a lake.  This map shows the configuration of the area around 500 years ago, about the time the Spanish arrived in Mexico.

Tenochtitlán, the major urban center, was established in 1325, a larger island surrounded by smaller areas islands amidst Lake Texcoco – shown as the City of Mexico below.  This aided in defense and provided agriculture using the chinampas, islands floated for growing crops.

The city was rapidly transformed via defeat and colonization:

Then the conquering Spaniards waged war against water, determined to subdue it. The Aztec system was foreign to them. They replaced the dikes and canals with streets and squares. They drained the lakes and cleared forestland, suffering flood after flood, including one that drowned the city for five straight years.

The article focuses on both this concept of geological transformation.  The second part of the story of Mexico City is the Grand Canal.  This infrastructural intervention was completed in the late 1800s, and ” a major feat of engineering and a symbol of civic pride: 29 miles long, with the ability to move tens of thousands of gallons of wastewater per second. It promised to solve the flooding and sewage problems that had plagued the city for centuries.”

The City being built on a lake has led to subsistence due to geological forces, and the need for drinking water has meant well drilling on a huge scale – both leading to elevations of the city being dramatically lowers.  This makes gravity-based infrastructure like the Grand Canal a bit problematic, as they can no longer freely drain.  The city, which occupied a metropolitan area of 30 square miles in 1950, now occupies closer to 3000 square miles, so and the almost 22 million inhabitants exert massive pressures on the land.

Some great interactive graphics from the NYT show the canal in the context of the ancient lake bed that sprawls through the region (see how this relates to the map above).

This plays out in the map below, which highlights the worst place of subsidence – the darkest red portions sinking around 9 inches per year.

[Click maps for larger views or check them out in the original article for overlay]

The problems, as mentioned, are based on some bad decision-making in urban planning back centuries ago.  This have been exacerbated by climate change – meaning lack of drinking water for many and the potential to lead to health issues, mass migrations to other cities, or conflict, which will be played out around the globe.  This example of non-coastal impacts of climate change is one of the most interesting aspects of the story, as much attention has been placed on sea-level rise but less on inland communities.  “Mexico City — high in the mountains, in the center of the country — is a glaring example. The world has a lot invested in crowded capitals like this one, with vast numbers of people, huge economies and the stability of a hemisphere at risk.”

One way this phenomenon is visible is in the architecture, with subtle rolling building forms as seen below creating waves of differential settlement.   An animation of the process shows the action creating this building form, due to differential layers of volcanic soils and clays, which drain and hold water at dramatically different rates.

What happens when the water is drawn down creates instability reflected in the constant sinking and retrofitting of buildings.  Kimmelman explains the impacts: “Buildings here can resemble Cubist drawings, with slanting windows, wavy cornices and doors that no longer align with their frames. Pedestrians trudge up hills where the once flat lake bed has given way. The cathedral in the city’s central square, known as the Zócalo, famously sunken in spots during the last century, is a kind of fun house, with a leaning chapel and a bell tower into which stone wedges were inserted during construction to act more or less like matchbooks under the leg of a wobbly cafe table.”

Aside from the quirky buildings, there are major issues throughout the region, more pressing as climate change increases.  Kimmelman mentions that “development has wiped out nearly every remaining trace of the original lakes, taxing the underground aquifers and forcing what was once a water-rich valley to import billions of gallons from far away.”  That conveyance of water is so difficult, that many residents are unable to get water easily, especially from taps.  This has led to an economy of ‘pipas’, “large trucks that deliver water from aquifers” to fill tanks.  Approximately 40% of residents get water this way.

The other issue is the difficulty of removing sewage and drainage, again because of geology and topography, along with leaks and inefficiencies of the aged infrastructure.  The Grand Canal is no longer able to gravity flow, described as “wide open, a stinking river of sewage belching methane and sulfuric acid”.  Pump stations are installed to assist this, and the canal, albeit ‘visible’ is marginalized, traveling under roadways and being polluted via impervious surfaces along the way.

While portions of the Grand Canal are still visible, the hidden hydrology and it’s implications, heightened by climate change, are evident in sinking buildings, lack of drinking water, and substandard infrastructure, a trifecta of issues that come back to the origins of a water based city from seven centuries back.  I mention long history, and this is a lesson in how quickly the decisions of the past can turn on us with population growth and a changing climate.

Per Kimmelman: “The whole city occupies what was once a network of lakes. In 1325, the Aztecs established their capital, Tenochtitlán, on an island. Over time, they expanded the city with landfill and planted crops on floating gardens called chinampas, plots of arable soil created from wattle and sediment. The lakes provided the Aztecs with a line of defense, the chinampas with sustenance. The idea: Live with nature.” 

The idea at the time, and even today is valid, but the modern challenge is confirmed by Loreta Castro Reguera, “a young, Harvard-trained architect who has made a specialty of the sinking ground in Mexico City, a phenomenon known as subsidence” who was interviewed in the article.

““The Aztecs managed. But they had 300,000 people. We now have 21 million.”

Xochimilco

A follow up from features the further story of the hydrology of Xochimilco, a UNESCO World Heritage Site that was covered by Victoria Burnett in a February 22nd story “An Aquatic Paradise in Mexico, Pushed to the Edge of Extinction” This article picks up the thread of the canals and islands from the original settlement.  “With their gray-green waters and blue herons, the canals and island farms of Xochimilco in southern Mexico City are all that remain of the extensive network of shimmering waterways that so awed Spanish invaders when they arrived here 500 years ago.”

The article focuses on the impacts of water usage in the region, with water from Xochimilco being pumped to other areas of the city, creating sink holes and draining canals which threaten the livelihoods of farmers and tourism industries.   The canals have long supported both industries, and also include wetlands and the infamous farming techniques called chinampas, which date back to Aztec era, and include ‘floating gardens’ in the shallow lakes.  A photo of these from 1912 show the this in action:

The article discusses the residual impacts of development on the aquifers, which impacts the regions waterways, but also, similar to the previous article, creates subsidence that impacts buildings and sinkholes.  The visible whirlpool in January lowered the water level quick enough to cause alarm before it could be stopped.

The water tourism in the area, typified by the trajineras, a blinged out local gondola, has been impacted as well.  One of the operators takes heed of the omens of water, stating:

“Nature is making us pay for what we have done”

In additional to development (building on the chinampas), there is pollution of the canals themselves, which has jump-started some efforts to reduce water use of the aquifer through rainwater harvesting, but the immensity of the problem of supplying water for a region with 22 million people is massive.  The balance between providing water and maintaining the cultural heritage means the possible loss of knowledge of chinampa farming, as well as health issues for locals.  This could quickly become irreversible, unless action is taken, as mentioned by Dr. María Guadalupe Figueroa, a biologist at Autonomous Metropolitan University, who ends the article: “…without a serious conservation effort, the canals will be gone in 10 to 15 years. But much of the damage was reversible, she said, adding: “It’s still a little paradise.”

Invisible Rivers

The two articles reminded me of a couple of articles I had filed away for future posts.  With the interest piqued from the above coverage, I dove into a 2016 CityLab post “Mexico City’s Invisible Rivers” which focuses on the work of Taller 13 and their plans to “uncover the 45 rivers that flow under the Aztec capital, hidden underground for decades.”  The first phase involves the Piedad River, and the idea of daylighting 9.3 miles of the corridor. shown in some detail below (with many more images on their site via the link above or via an online document here).

There’s a lot of similarity to the Cheonggyecheon River in Seoul (mentioned here in the Lost Rivers documentary post) in terms of the final look and feel as well as the transformative potential, as mentioned in the article by urban biologist Delfín Montañana”

““This project shatters paradigms. It proposes to tear down a private road, which you cannot use unless you have a car. What we propose is that we remove the cars, open the pipes, and treat the water. We need to transform the model of our city”

The hidden gem in the post is the document “La Ciudad de México 1952 1964” published by the Departamento del Distrito Federal. México,  This document outlines the public services of the city, including chapters on water and sewer that have some great info (with, in my case, some translation).

Sections on potable water and drainage show ‘modernization’ along with maps of these systems (of passable by not great quality).  The following shows the drainage system of the time, which involved a lot of pipes and images of pipes being built, and people in pipes.

A colored map of the historic Mexico from the document takes us full circle, to the hydrological history, a city literally built on a lake, economies as well built on that watery foundation, and now dealing with the consequences.