Afmscs Watershed Site 23 Reservoir Report
Last Updated: December 13, 2025
Located in Cherokee, Iowa, Afmscs Watershed Site 23 is a vital water resource managed by the local government for purposes like fire protection, small fish ponds, and flood risk reduction.
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Summary
Constructed in 1989, this earth dam stands at a height of 34 feet and spans 375 feet in length, with a storage capacity of 73 acre-feet. The dam, designed by USDA NRCS, plays a crucial role in managing water resources in the area, particularly for TR- Fourmile Creek.
With a low hazard potential and a moderate risk assessment score of 3, Afmscs Watershed Site 23 is regulated by the Iowa DNR and undergoes regular inspections, permitting, and enforcement. While the condition assessment is currently not rated, the dam's design and purpose highlight its significance in maintaining water quality and quantity in the region. The dam's location, along with its structural features and storage capacity, make it a key element in the overall watershed management strategy for flood control and environmental protection in the area.
Year Completed |
1989 |
Dam Length |
375 |
Dam Height |
34 |
River Or Stream |
TR- FOURMILE CREEK |
Primary Dam Type |
Earth |
Surface Area |
5.2 |
Drainage Area |
0.4 |
Nid Storage |
73 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
34 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little Sioux River At Correctionville
|
327cfs |
Little Sioux River At Linn Grove
|
257cfs |
Floyd River At Alton
|
36cfs |
Maple River At Mapleton
|
323cfs |
Floyd River At James
|
187cfs |
West Fork Ditch At Hornick
|
80cfs |
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.
Afmscs Watershed Site 23