Twelve Mile Creek Watershed Site 62-5 Reservoir Report
Last Updated: December 12, 2025
Twelve Mile Creek Watershed Site 62-5, located in Davis City, Iowa, is a grade stabilization structure designed by the USDA NRCS and completed in 2003.
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Summary
This earth dam stands at 36 feet in height and spans 412 feet in length, with a storage capacity of 131 acre-feet. It serves the primary purpose of grade stabilization in the Twelve Mile Creek watershed, which covers a drainage area of 0.5 square miles.
Managed by the local government and regulated by the Iowa DNR, this dam has a low hazard potential and a moderate risk assessment rating of 3. While its condition has not been rated, it is inspected, permitted, and enforced by state agencies. Despite its small surface area of 0.4 acres, the dam plays a crucial role in water resource management in the region, ensuring the protection of nearby communities from potential flooding and erosion risks.
With a controlled spillway type and no locks or gates, Twelve Mile Creek Watershed Site 62-5 remains an essential structure in the Rock Island District. Its presence contributes to the overall resilience of the area against climate change impacts, highlighting the importance of sustainable water resource management practices in safeguarding communities and ecosystems for the future.
Year Completed |
2003 |
Dam Length |
412 |
Dam Height |
36 |
River Or Stream |
Tr- Twelve Mile Creek |
Primary Dam Type |
Earth |
Surface Area |
0.4 |
Drainage Area |
0.5 |
Nid Storage |
131 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
36 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
East Fork 102 River At Bedford
|
1cfs |
Thompson River At Davis City
|
22cfs |
Raccoon River At Van Meter
|
1640cfs |
South Raccoon River At Redfield
|
268cfs |
Raccoon River Near West Des Moines
|
1300cfs |
Nodaway River At Clarinda
|
47cfs |
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.
Twelve Mile Creek Watershed Site 62-5