Pollema Pond, located in Houston, Minnesota, is a privately owned earth dam constructed in 1960 by the USDA NRCS for flood risk reduction along the Silver Creek and Trout-Root River.
Wind
Humidity
With a dam height of 30 feet and a storage capacity of 20 acre-feet, it serves multiple purposes including debris control, fire protection, and stock or small fish pond in addition to flood risk reduction. The pond covers a drainage area of 0.35 square miles and has a maximum discharge capacity of 240 cubic feet per second.
Despite being categorized as having a low hazard potential and a moderate risk assessment, Pollema Pond's condition assessment is currently not rated. The dam features an uncontrolled spillway and outlet gates, with a spillway width of 34 feet. While there have been no recent inspections or evaluations, the pond's emergency action plan status, inundation maps, and risk management measures remain unclear. Despite these uncertainties, Pollema Pond is an important structure in the region for managing water resources and mitigating flood risks.
Year Completed |
1960 |
Dam Length |
200 |
Dam Height |
30 |
River Or Stream |
SILVER CR.,TR-ROOT RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
30 |
Drainage Area |
0.35 |
Nid Storage |
20 |
Structural Height |
31 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
31 |
Root River Near Houston
|
472cfs |
South Fork Root River Near Houston
|
209cfs |
La Crosse River Near La Crosse
|
348cfs |
Mississippi River At Winona
|
13700cfs |
Black River Near Galesville
|
862cfs |
Trempealeau River At Dodge
|
953cfs |