In 2017, CRWD completed the first Targeted Watershed Program large-scale BMP. Partnering with the City of Saint Paul and the Saint Paul School District, an underground infiltration pipe gallery was installed below the new athletic field at Como Park Senior High School. Stormwater is diverted from the public storm sewer into the pipe gallery where it has time to soak into the ground. The $600,000 project will prevent 17 pounds of phosphorus from reaching Como Lake each year.
CRWD also completed a feasibility study to identify cost-effective stormwater treatment opportunities within Como Regional Park. The goal was to shift from trying to install small BMPs when park improvements occur to installing fewer, larger BMPs that will eventually treat the entire park and portions of surrounding neighborhoods. Several BMPs identified in the study have been selected for additional design with the goal of installing by 2020.
Residential boulevard rain gardens are another key component of the Targeted Watershed Program. In the McCarrons subwatershed, 64 properties were identified as ideal sites for curb-cut rain gardens. As a result of community outreach, 14 rain gardens were constructed in the fall of 2018. A similar effort is taking shape for neighborhoods in the Como Lake subwatershed with up to 30 rain gardens being planned for construction in 2019.
CRWD also worked closely with the Como Active Citizen Network to develop a model for curb clean-ups in the neighborhood surrounding Como Lake. Next steps are to present the model to residents of Como Lake and Lake McCarrons.
The program also successfully expanded the Adopt-a-Drain promotion, with emphasis placed on the Lake McCarrons neighborhood, in the fall of 2017. There are currently 44 homes in the Lake McCarrons subwatershed participating in the program, and an additional 100 Adopt-a-Drain program participants in the Como Lake watershed.