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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. 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_Height | 30 |
River_Or_Stream | SILVER CR.,TR-ROOT RIVER |
Dam_Length | 200 |
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 |
TURKEY RIVER AT SPILLVILLE | 120cfs |
UPPER IOWA RIVER AT BLUFFTON | 264cfs |
KICKAPOO RIVER AT STEUBEN | 602cfs |
CEDAR RIVER AT CEDAR RAPIDS | 3190cfs |
UPPER IOWA RIVER NEAR DORCHESTER | 426cfs |
YELLOW RIVER AT ION | 99cfs |
UPPER IOWA RIVER AT DECORAH | 350cfs |