Mule Creek Watershed Sta 30+00 Reservoir Report
Last Updated: December 5, 2025
Mule Creek Watershed Sta 30+00, located in Mills County, Iowa, is a key water resource management structure designed by the USDA NRCS to serve multiple purposes including fire protection, stock, and small fish pond management.
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Summary
Completed in 1955, this earth dam stands at 35 feet in height and spans 537 feet in length, with a storage capacity of 42 acre-feet and a surface area of 2.3 acres. The dam plays a crucial role in flood risk reduction for the TR-Mule Creek river system, which covers a drainage area of 0.31 square miles.
Managed by the local government and regulated by the Iowa Department of Natural Resources, Mule Creek Watershed Sta 30+00 is deemed to have a low hazard potential and a moderate risk assessment rating. Despite not having a current condition assessment, the dam is operational and meets regulatory standards for state permitting, inspection, and enforcement. The structure's emergency action plan status, inundation maps, and risk management measures remain unspecified, suggesting potential areas for improvement in emergency preparedness and response. Enthusiasts of water resources and climate management in the region may find Mule Creek Watershed Sta 30+00 to be a fascinating case study in multi-purpose dam infrastructure in rural Iowa.
Year Completed |
1955 |
Dam Length |
537 |
Dam Height |
35 |
River Or Stream |
TR-MULE CREEK |
Primary Dam Type |
Earth |
Surface Area |
2.3 |
Drainage Area |
0.31 |
Nid Storage |
42 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
35 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
West Nishnabotna River At Randolph
|
512cfs |
Weeping Water Creek At Union
|
20cfs |
East Nishnabotna River At Red Oak
|
305cfs |
Nishnabotna River Above Hamburg
|
1190cfs |
Missouri River At Nebraska City
|
24100cfs |
Missouri River At Omaha
|
18800cfs |
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.
Mule Creek Watershed Sta 30+00