Construction has begun on approximately 90 specially designed bioswales in the neighborhoods of Boerum Hill, Carroll Gardens, Gowanus, Park Slope and Prospect Heights. When construction is completed later this summer, the bioswales will have the capacity to collect and absorb nearly 170,000 gallons of stormwater. It is estimated that the bioswales will capture more than 8 million gallons of stormwater each year, reducing sewer overflows into the Gowanus Canal and improving the health of the waterway. To date, approximately 300 bioswales have been built throughout New York City with 1,300 currently under construction and thousands more planned for the next several years. In addition to the bioswales, two stormwater green streets will be built to utilize underused roadway to absorb stormwater.
In case you missed it, this report from DEP shows that the bioswales already in place are performing even better than expected!
Watch this video of a bioswale collecting stormwater!
Full press release about the new construction here.