Langdon/Saunders Raingardens Project

Using curb-cut raingardens to manage stormwater

Project Type:

Project Status: 
Completed
Year Completed: 
2012
Construction Cost: 
$22,064
Current Status: 

Four curb-cut raingardens were planted in the South Saunders Neighborhood in Fall 2012. The four raingardens will be maintained by MCWD for the first three years, the 'establishment' period. After that the homeowners will maintain the raingardens. See the pictures below.

About this project: 

Langdon Lake outlets via storm sewer to Lost Lake, which then outlets by open channel to Cooks Bay of Lake Minnetonka.

Langdon Lake does not meet its water quality goal established in the 2007 MCWD Water Resources Management Plan. The MCWD began monitoring Saunders Lake in 2009; the lake is currently meeting state-wide standards. Based on the MCWD Hydraulic & Hydrologic Pollutant Loading Study it was determined that offsite loading could be reduced through retrofit of existing stormwater infrastructure with BMPs, enhancing the outlets of Saunders and Black Lakes, working with homeowners to install BMPs and wetland restoration.

Much of the corridor between Black and Saunders Lakes, composed of wetland and maple-basswood forest, has been identified by the DNR as a regionally significant area with outstanding ecological value. Most of this area has been incorporated into Gale Woods Regional Park by the Three Rivers Park District. The western half of the Langdon Lake subwatershed has been identified by the Department of Natural Resources as a Metropolitan Wildlife Corridor Focus Area and by the City of Minnetrista as a natural resources corridor.