Boston launches online tool for designing coastal flood defenses
Coastmix, modeled on the street-design platform Streetmix, lets users build waterfront flood protections and test them against projected sea level rise, the city said.
Boston has launched Coastmix, an interactive website that lets users design and test ways to protect shorelines from rising seas, the city said Wednesday.
The tool was built by the city's Office of Climate Resilience and Office of Emerging Technology. It is modeled on Streetmix, a street-design platform that grew out of a 2013 Code for America hackathon. Users can recreate a real waterfront and drag in features such as berms, dunes, floodwalls and nature-based defenses, alongside car lanes, bike lanes and sidewalks. They can then add flooding based on sea level rise and storm surge projections for 2030, 2050 or 2070 to see whether a design would protect the area. The site includes preset waterfront examples, and designs can be downloaded and shared.
The city said it is carrying out coastal resilience plans along its entire 47-mile coastline and wanted a way to reach residents who may not know what can be built to protect neighborhoods from flooding. Officials said the tool is also meant for researchers, organizers, students and coastal communities elsewhere.
"The motivation to create Coastmix came from a desire to bring residents closer to the design process," said Catherine McCandless, a senior climate resilience project manager in the Office of Climate Resilience. She said the city would use it to explain coastal resilience concepts, develop possible strategies with partners and residents, and weigh trade-offs to inform future decisions.
Coastmix is available at coastmix.org, and its code is open source. The city said residents can submit designs to a community gallery, and it will hold an online demonstration and question-and-answer session from noon to 1 p.m. on Nov. 6.
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