The City of Lafayette, as part of its long term control plan for water quality, tackled a variety of stormwater management challenges through several different projects in the Durkees Run watershed. Williams Creek provided a variety of services on two of these projects - Durkees Run Streambank Stabilization and Durkees Run Stormwater Park. Both projects were completed design-build using a Performance Contracting procurement model by the City.
The Durkees Run Streambank Stabilization addressed severe erosion issues through removal of an in-stream sandbar to establish healthy water flow and prevent erosion of the banks. Geotextile fabric, erosion control blanket, rip rap, and native seed were installed to solidify the stream bank.
Durkees Run Stormwater Park retrofitted underutilized tennis courts adjacent to Lafayette Jefferson High School into a park that manages the local watershed, is a destination on the Lafayette trails system, and serves as an outdoor classroom for the high school. The local watershed, incorporated into the park, accounts for approximately 10% of the overall Durkees Run Interceptor area and removes 2.8 million gallons per year from the combined sewer system. Opportunities for public outreach and education were realized, due to the park’s location, for the school and area residents. Interactive features include an outdoor classroom amphitheater, ADA accessible boardwalks and overlooks, signage and fabricated landscape features that serve to educate users on stormwater management. The park also includes minimal sewer separation techniques, in order to create a heavily landscaped Green Infrastructure (GI) system in a centralized setting allowing public interaction.