Stories of loss around hidden hydrology are not confined to the environmental impacts and the erasure of natural waterways. They can also include the loss of community and larger societal impacts resulting from impacts like flooding that can result from building communities that are out of balance with the larger hydrological systems they inhabit. This month is an appropriate time to remember Vanport, the community built along the Columbia River in North Portland in the early 1940s by Henry J. Keiser to house World War II shipbuilding workers, and the devastating flood on Memorial Day in May 1948 which destroyed the town.

The Oregon Experience documentary from 2016, “Vanport” is available to watch online for free and gives an in-depth history of the evolution of the community and its tragic demise. I wrote about the documentary back in 2019 in my post “Vanport, A Story of Loss” if you want a summary of the evolution and fate of the community.

The rapid development of the community quickly made Vanport the largest wartime housing development, with over 40,000 residents, making it also the second largest city in Oregon at the time in the early 1940s. The community was built around water, nestled near the confluence of the Columbia and Willamette, with channels of the Columbia slough and smaller lakes providing amenities for residents.

I love the two images from the documentary showing the engagement with water, including an informal beach area adjacent to either Force Lake or Bayou Lake, and a group of kids near one of the sloughs.

There is some debate about whether the rail embankment to the west between Smith Lake and the Vanport community was meant to be a dike or protection from flooding or merely the berm for the railroad lines. For Vanport the question was irrelevant, as the waters rose quickly and breached the raised earthwork, which allowed the floodwaters to quickly inundate the entire town with a “wall of water”.

The devastation was compounded by the location within the historical Columbia River floodplain and the ephemeral nature of the construction which was rapid and not meant to be long-lived. Other breaches occurred and the entire area inland became a lake. The images, such as below, of houses floating amid the floodwaters, hint at the lack of solid foundations.

The devastation was immense and swift, leaving behind the wreckage of the community. Over time the debris was cleared and new uses emerged to erase the remnants of the Vanport community, as it is now part of the Portland Expo Center, Heron Lakes Golf Club, Portland International Raceway, and adjacent industrial development.

Vanport was never meant as a permanent community, and the occupation of the site continued well after shipbuilding activities had wound down following the war, providing a refuge for residents who found barriers to housing elsewhere. The suddenness of the destructive forces, the lack of warning and accountability to residents about the dangers of the flooding, and the displacement of numerous residents who became refugees overnight due to the disaster. These compounding forces give this site and its history special meaning for Portanders and the need to discuss, remember, and confront our histories, with lessons to be shared with other communities. The fact that the Vanport has been physically erased from the map also led to its erasure from our memory. It is the same as the burial and erasure of streams, and wetlands, and deserves the same attention to the ecological, hydrological, and cultural forces at work.

The legacy continued with displacement, as a product of racial housing discrimination led to difficulty for groups to find other housing. As mentioned by Abbott in the Oregon Encyclopedia entry:

“Refugees crowded into Portland, a city still recovering from the war. Part of the problem was race, for more than a thousand of the flooded families were African Americans who could find housing only in the growing ghetto in North Portland. The flood also sparked unfounded but persistent rumors in the African American community that the Housing Authority had deliberately withheld warnings about the flood and the city had concealed a much higher death toll.”

It also is important to consider the vulnerability that still exists today. While the installation of Columbia River dams provides some moderation of flood levels that didn’t exist in the 1940s, and the bolstering of true levees and dikes meant to protect from future floods, risks persist along the water’s edge. This protection is aided today through efforts such as Levee Ready Columbia, working to protect from flood risk in the context of development and climate change in the slough.

Vanport Mosaic

As a reminder of our history and place, additional resources provide the background of life at Vanport and the people who called it home for a brief time. This video “Vanport: Legacy of a Forgotten City”, below, is worth checking out for more context about the community and the work being done to keep the memory alive. The video is part of a great resource, Vanport Mosiac, which calls itself “…a memory-activism platform. We amplify, honor, and preserve the silenced histories that surround us in order to understand our present, and create a future where we all belong.”

Their annual Vanport Mosaic Festival is upcoming this year from May 18 to June 1, 2024, which features speakers, tours, and events on-site and at nearby community venues (program here). I’d recommend taking the bus tour (if they still offer it) to see parts of the site not accessible outside of festival hours around the original Vanport community. I wrote an extensive post about the festival and tour in June 2019 “Vanport Mosaic” and they were kind enough to provide a link to it on their site for others to access.

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Note: This post was originally posted on Substack on 05/15/24 and added to the Hidden Hydrology website on 04/23/25.