The Stewart Avenue Stormwater Improvement Project is a major investment designed to reduce chronic flooding in the Carrick neighborhood. This part of the city has long struggled with stormwater issues due to steep terrain, aging sewer infrastructure, and a heavily developed watershed.

To address these challenges, Pittsburgh Water is installing a new storm sewer system and a green stormwater infrastructure (GSI) feature. Improvements include new storm inlets, manholes, storm sewer pipelines, and a rain garden with an underground storage system. Together, these upgrades will slow down, capture, and redirect stormwater more effectively, reducing the likelihood of street flooding and protecting downstream neighborhoods.