Cozad Dam Reservoir Report
Nearby: Nichols Dam Hill Dam
Last Updated: December 16, 2025
Cozad Dam, located in Adair, Iowa, is a privately owned structure designed by the Soil Conservation Service (SCS) for fire protection, stock, or small fish pond purposes.
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Summary
Completed in 1989, this earth dam stands at a height of 24 feet and stretches 580 feet in length, providing a storage capacity of 70 acre-feet. Situated on TR-Nine Mile Creek, this dam serves as a crucial resource for the local community in Bridgewater, Iowa.
Despite its low hazard potential and moderate risk assessment, Cozad Dam is regulated by the Iowa Department of Natural Resources, ensuring proper inspection, enforcement, and permitting processes are in place. The dam's condition is currently not rated, but it meets state jurisdiction requirements and is equipped with an uncontrolled spillway. With a surface area of 4.3 acres and a drainage area of 0.26 square miles, Cozad Dam plays a vital role in maintaining water resources in the region.
As a key contributor to water management and conservation efforts in the area, Cozad Dam serves as a testament to the importance of sustainable infrastructure for climate resilience. With its strategic location and functional design, this dam continues to fulfill its primary purposes while supporting the environmental and economic needs of the community.
Year Completed |
1989 |
Dam Length |
580 |
Dam Height |
24 |
River Or Stream |
TR-NINE MILE CREEK |
Primary Dam Type |
Earth |
Surface Area |
4.3 |
Drainage Area |
0.26 |
Nid Storage |
70 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
24 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
East Nishnabotna River Near Atlantic
|
143cfs |
Middle Raccoon River At Panora
|
92cfs |
South Raccoon River At Redfield
|
268cfs |
Middle Raccoon River Near Bayard
|
121cfs |
Raccoon River At Van Meter
|
1640cfs |
West Nishnabotna River At Hancock
|
154cfs |
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.
Cozad Dam