Sartell Riverside Avenue/County Road 1 Stormwater Improvement Project

Riverside Avenue/CR 1 runs along the banks of the Mississippi River in Sartell, MN. Stearns County and the City of Sartell are partnering to reconstruct the road and replace outdated utilities and infrastructure. As part of the redevelopment process there is an opportunity to target multiple high-quality BMP locations that will only be accessible during the reconstruction process.
There are three main components to this project. First, there are two major subcatchment areas that drain through the proposed construction area. One consists of 550 acres of residential housing and urban streets. The second is a 60-acre commercial use district. Both drainage areas combine for 44% of the City's developed area that discharges untreated stormwater to the Mississippi River. The goal is to strategically place BMPs, such as sedimentation structures with energy dissipation, baffles and weirs near Riverside Avenue and the stormwater outfalls into the Mississippi River.
Second, due to high flows and failing infrastructure at the stormwater outfalls, there is approximately 400 LF of Mississippi River bank that needs to be stabilized and buffered to prevent additional sediment loss into the River.
Third, the project will be the first step in a treatment train approach that will be created with the City's future West Side Reconstruction Project at which point BMPs such as sedimentation structures with energy dissipation, filtration practices and infiltration BMP's will be installed within the upstream subcatchment to treat stormwater and capture sediment from the watershed.
This application proposes to construct up to ten BMPs to intercept and treat urban stormwater runoff and to stabilize 400 LF of Mississippi River streambank. This project is a critical step and limited opportunity to treat stormwater from a developed, untreated priority area within the City of Sartell.