Community Raingardens
Community Raingardens
The project was designed to meet the Como Lake Strategic Management Plan's objectives by improving water quality, reducing phosphorus inputs, and eliminating residential flooding. EOR completed a detailed study of the sub-watersheds through extensive hydrologic/hydraulic modeling and water quality evaluations using XP-SWMM and P8. EOR collaborated with the city of St. Paul's Public Works Department. The project included several components:
- 8 community raingardens to replace impervious areas
- 3,100 ft under-the-road, infiltration trenches (innovative concept at the time)
- largest underground storage facility in Minnesota at time of installment (84,700 cu ft)
- regional stormwater infiltration basin
Component monitoring by the Capitol Region Watershed District (CRWD) shows that the facilities perform as good or better than the design process estimated.
Client Benefits
- Multiple municipal, state, and national awards.
- Exceeded phosphorus and runoff volume reduction targets.
- $2.5 M in infrastructure savings and flood reduction.
- Equitably distributed cost-sharing among municipal partners.
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