Pleasant Valley No.
Wind
Humidity
7, also known as S. Girtler Detention, is a privately owned Earth dam situated in Winona, Minnesota. Built in 1968 by the USDA NRCS, this dam serves the primary purpose of flood risk reduction along the Pleasant Valley Creek. With a height of 29 feet and a length of 331 feet, the dam has a storage capacity of 20 acre-feet and can handle a maximum discharge of 130 cubic feet per second.
This significant structure, with a spillway width of 20 feet and uncontrolled spillway type, plays a crucial role in mitigating flood hazards in the area. The dam's hazard potential is rated as significant, with a moderate risk assessment of 3. While the condition assessment is not rated, the dam's condition remains stable, and emergency action plans are in place to address any potential risks. Despite not being regulated by the state, Pleasant Valley No. 7 stands as a vital asset in the region's water resource management and climate resilience efforts.
Year Completed |
1968 |
Dam Length |
331 |
Dam Height |
29 |
River Or Stream |
PLEASANT VALLEY CREEK |
Primary Dam Type |
Earth |
Surface Area |
1 |
Hydraulic Height |
29 |
Drainage Area |
0.41 |
Nid Storage |
20 |
Structural Height |
30 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
30 |
Mississippi River At Winona
|
13700cfs |
Trempealeau River At Dodge
|
953cfs |
Root River Near Houston
|
472cfs |
South Fork Root River Near Houston
|
209cfs |
Black River Near Galesville
|
862cfs |
Trempealeau River At Arcadia
|
400cfs |
| Location | Reservations | Toilets |
|---|---|---|
Pla-Mor Campground
|
||
Prairie Island City Campground
|
||
Group Tent Campsite
|
||
Prairie Island Campground
|
||
Perrot State Park Campground
|
||
Perrot State Park
|