Using State-of-the-Art Tools to Cocreate a Future for the LA River

Imagine restoring a 51-mile-long concrete river—running through the heart of the Los Angeles Basin in California—into a vibrant corridor reconnecting fractured communities and ecosystems. In Season 7, Episode 7, host Sarah Thorne and cohost Amanda Tritinger from the US Army Corps of Engineers talk with landscape architects Alex Robinson from University of Southern California (USC) and Leslie Dinkin from the Kounkuey Design Initiative in Los Angeles. They discuss the use of storytelling, augmented reality, and physical modeling tools to engage people along the river in cocreating a new future for themselves and for the river.

Leslie recently graduated with dual master’s degrees in landscape architecture and heritage conservation from USC, studying under Alex and working with him at the Los Angeles River Integrated Design Lab (LA-RIDL).

Alex’s work is rooted in his personal experiences with the City of Los Angeles (LA) and its infrastructure, including the LA River, and finding out how people spend their days interacting with these interesting landscapes. Fresh out of graduate school in 2005, Alex worked on the Los Angeles River Revitalization Master Plan, one of the first of many plans for the river that tried to bring different values into the thinking about how to transform the river into something more than just an instrument of flood control. He has continued this focus with the realization that, “We were constrained by so many voices and different constituents, all speaking different languages. I thought, what if we could create a platform where we had a more collective understanding, where people could begin to speak the same language and were able to cocreate something.”

This led Alex to reach out to the USACE Engineer Research and Development Center (ERDC), which has hydrology modeling in its toolset. As Amanda notes, “You can see how this just clearly aligns with Engineering with Nature. At ERDC, we have numerical and physical models, but how do we get our models to talk to people? I think Leslie and Alex have done a really great job in not only creating that connection but making it meaningful.”

The product of this collaboration with Duncan Bryant, Research Hydraulic Engineer, and his colleagues at ERDC’s Coastal Hydraulics Laboratory (CHL), was the development of a physical model of a section of the LA River with adjacent land owned by the city where there is an opportunity for big changes. As Alex explains, “This is the crown-jewel opportunity for changing the LA River.” To take the engagement with the model to the next level and produce something that invites people to participate in the process, Alex and his colleagues developed an augmented reality component to visually overlay information on top of the physical model. “It lets people interact—a community member can come in and make a comment, draw something, and that becomes input an engineer and a landscape architect can consider in their design process.”

Thinking about how advanced visualization tools support community engagement, Alex says, “I think the model and all the different tools we’ve developed have created this incredible common ground for people to have a conversation and have their ideas and values represented in the system.”

Amanda truly appreciates the work that Alex and Leslie are doing: “If I could just represent all of engineers for a minute, I’d like to say, thank you. Thank you for helping us communicate.”

For more information and resource links, please visit the EWN Podcast page on the EWN website at https://www.engineeringwithnature.org/

• Amanda Tritinger at LinkedIn
• Alexander Robinson at LinkedIn
• Leslie Dinkin at LinkedIn