Grundman Dam Reservoir Report
Nearby: Lundquist Dam Smith Dam
Last Updated: December 24, 2025
Grundman Dam, located in Cherokee, Iowa, serves multiple purposes including fire protection, stock, and small fish pond management.
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Summary
Built in 1981 by the USDA NRCS, this private dam stands at a height of 37 feet and spans 215 feet in length. With a storage capacity of 19 acre-feet and a surface area of 2 acres, Grundman Dam is a vital structure for water resource management in the area.
Managed by the Iowa Department of Natural Resources, Grundman Dam is regulated, permitted, inspected, and enforced by state agencies to ensure its safety and functionality. The dam's hazard potential is rated as low, and its condition assessment is currently not rated. Despite facing a moderate risk level, Grundman Dam plays a crucial role in mitigating floods, providing water for irrigation, and supporting local ecosystems along TR- Mill Creek. With its earth structure and soil foundation, Grundman Dam stands as a testament to efficient water management and sustainable resource utilization in the region.
Year Completed |
1981 |
Dam Length |
215 |
Dam Height |
37 |
River Or Stream |
TR- MILL CREEK |
Primary Dam Type |
Earth |
Surface Area |
2 |
Drainage Area |
0.09 |
Nid Storage |
19 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
37 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little Sioux River At Linn Grove
|
257cfs |
Little Sioux River At Correctionville
|
327cfs |
Floyd River At Alton
|
36cfs |
Ocheyedan River Near Spencer
|
59cfs |
Floyd River At James
|
187cfs |
Perry Creek Near Milnerville
|
25cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Grundman Dam