Clark Subwatershed Gully 7 Sta70+00 Reservoir Report
Last Updated: December 13, 2025
Located in Quimby, Iowa, the Clark Subwatershed Gully 7 Sta70+00 is a vital structure managed by the local government for fire protection, stock, and small fish pond purposes.
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Summary
Built in 1956 by the USDA NRCS, this earth dam stands at a height of 37 feet and has a storage capacity of 62 acre-feet, serving as a key component in flood risk reduction efforts in the area. With a low hazard potential and moderate risk assessment rating, the dam plays a crucial role in water resource management along the TR-Little Sioux River.
The Clark Subwatershed Gully 7 Sta70+00 dam, with a surface area of 1.1 acres and a drainage area of 0.25 square miles, is regulated by the state of Iowa through the Iowa DNR. Despite not being currently rated for condition assessment, the dam's structural integrity is regularly inspected, meeting state permitting and enforcement requirements. Additionally, the dam is not under the jurisdiction of the USACE but falls under the responsibility of the local government for operations and maintenance.
As part of the larger Rock Island District, the Clark Subwatershed Gully 7 Sta70+00 dam contributes to the overall water management strategy in Cherokee, Iowa. Its strategic location and design by the USDA NRCS highlight the collaborative efforts between federal and local agencies to ensure the safety and sustainability of water resources in the region. Climate and water resource enthusiasts will find this structure an intriguing example of integrated watershed management practices in action.
Year Completed |
1956 |
Dam Length |
150 |
Dam Height |
37 |
River Or Stream |
TR-LITTLE SIOUX RIVER |
Primary Dam Type |
Earth |
Surface Area |
1.1 |
Drainage Area |
0.25 |
Nid Storage |
62 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
37 |
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 |
North Raccoon River Near Sac City
|
312cfs |
Floyd River At James
|
187cfs |
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.
Clark Subwatershed Gully 7 Sta70+00