Turkey Cr Watershed Site 40-5 Reservoir Report
Nearby: Eblen Dam Turkey Cr Watershed Site 40
Last Updated: December 13, 2025
Turkey Cr Watershed Site 40-5, located in Cass County, Iowa, is a significant earth dam constructed in 1969 by the USDA NRCS for fire protection, stock, and small fish pond purposes.
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Summary
This dam on TR-TURKEY CREEK stands at a height of 25 feet, with a length of 656 feet, and has a storage capacity of 135 acre-feet. The dam serves multiple functions including flood risk reduction and covers a drainage area of 0.55 square miles.
Managed by the Iowa Department of Natural Resources, this low-hazard dam has a moderate risk rating of 3, with a condition assessment that is currently not rated. While the spillway type is uncontrolled, the dam's primary purpose is to provide essential water resources for fire protection and agricultural needs in the area. With a history of state regulation, inspection, and enforcement, this site plays a crucial role in water management and conservation efforts within the Turkey Creek watershed.
Overall, Turkey Cr Watershed Site 40-5 serves as a vital infrastructure for water resource management in the region, contributing to flood risk reduction and irrigation for agricultural activities. With its earth dam structure and soil foundation, this site highlights the importance of sustainable water management practices in safeguarding local ecosystems and communities. As climate change continues to impact water availability and quality, the maintenance and proper regulation of dams like these are essential for ensuring water security and resilience in the face of evolving environmental challenges.
Year Completed |
1969 |
Dam Length |
656 |
Dam Height |
25 |
River Or Stream |
TR-TURKEY CREEK |
Primary Dam Type |
Earth |
Surface Area |
9 |
Drainage Area |
0.55 |
Nid Storage |
135 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Turkey Cr Watershed Site 40-5