Pond Dredging Begins This Week

You may notice trucks hauling sediment from stormwater ponds near Twin Lake, Lake Calhoun and Gleason Lake in the next two months. That’s just the Minnehaha Creek Watershed District (MCWD) doing routine maintenance to keep the ponds functional.

Stormwater ponds capture water runoff before it enters lakes and streams, allowing sediment and pollutants to settle to the bottom. The sediment builds up in the ponds and needs to be removed periodically.

This week, the MCWD will begin dredging the stormwater pond near Twin Lake (the lake itself won't be dredged) to remove 2,700 cubic yards of sediment. Later this month, the District will remove 2,200 cubic yards of sediment from the easternmost cell of the Southwest Calhoun Pond. Both ponds were last dredged in 2004.

At Gleason Pond in Plymouth, the District will remove 900 cubic yards of sediment in February. Evergreen trees will be removed for construction access at the intersection of Black Oaks Court North and 13th Avenue North. The trees will be replaced after the project is completed.

Work on all three ponds should be complete by mid-February. Any disturbed vegetation will be restored in the spring.    

Postcards:
The informational postcards mailed out to nearby homeowners:
- SW Calhoun Pond
- Twin Lakes Pond
- Gleason Pond

View an interactive map of the project information here.  

Lake Calhoun

SW Calhoun Pond was constructed in 1999 by the MCWD to capture polluted water runoff before it enters Lake Calhoun. The pond allows sediment and pollutants to settle to the bottom, preventing polluted waters from flowing directly into the lake. The pond also helps prevent flooding by providing temporary storage during large rain events.

The pond requires routine maintenance to ensure it remains functional. The MCWD will dredge the pond to remove 2,200 cubic yards of sediment. Without the dredging, the pond would have less capacity to hold water, and would be less effective at removing pollutants and controlling flooding. The pond was last dredged in 2004.

What to Expect
  • Work occurring in January and February
  • Trucks hauling sediment
  • Disturbed vegetation will be restored in the spring
Twin Lakes

 

Twin Lakes Pond was constructed in 1996 by the MCWD to capture polluted water runoff before it enters Twin Lakes. The pond allows sediment and pollutants to settle to the bottom, preventing polluted waters from flowing directly into the lake. Twin Lakes Pond also helps prevent flooding by providing temporary storage during large rain events. 

The pond requires routine maintenance to ensure it remains functional. The MCWD will dredge the pond to remove 2,700 cubic yards of sediment. Without the dredging, the pond would have less capacity to hold water, and would be less effective at removing pollutants and for flood control. 

The pond was last dredged in 2004. Only the pond will be effected. Twin Lakes will not be dreged.

What to Expect:

  • Work occurring in January and February 
  • Expect trucks hauling. Potential for temporary path closures 
  • Disturbed vegetation will be restored in the spring

 

Gleason Pond

Gleason Pond was constructed in 1995 by the MCWD to capture polluted water runoff before it enters Gleason Lake. The pond allows sediment and pollutants to settle to the bottom, preventing polluted waters from flowing directly into the lake. The pond also helps prevent flooding by providing temporary storage during large rain events.

The pond requires routine maintenance to ensure it remains functional. The MCWD will dredge the pond to remove 900 cubic yards of sediment. Without the dredging, the pond would have less capacity to hold water, and would be less effective at removing pollutants and controlling flooding.

What to Expect:
  • Work occurring in January and February 
  • Trucks hauling sediment 
  • Arborvitaes will be removed for construction access at the intersection of Black Oaks Court North and 13th Avenue North. Trees will be replaced after completion of the project. 
Share This