Summary
Designed by USDA NRCS, the earth dam stands at a height of 32 feet and spans 405 feet in length, with a storage capacity of 79 acre-feet and a surface area of 5.3 acres. The dam primarily serves the purposes of fire protection, stock, and a small fish pond, with low hazard potential and a moderate risk assessment rating.
Managed by the Iowa Department of Natural Resources, Dozark Dam is regulated, permitted, inspected, and enforced by state agencies to ensure its safety and compliance with regulations. The dam's spillway is uncontrolled, and it has a drainage area of 0.31 square miles. While the condition assessment is currently not rated, the risk management measures are in place to address any potential hazards associated with the dam. The dam is considered to have a moderate risk level, and emergency action plans have been prepared to mitigate any potential risks effectively.
For water resource and climate enthusiasts, Dozark Dam offers a fascinating glimpse into the intersection of human infrastructure and natural resources. With its vital role in fire protection and water storage, as well as its location on the TR-Boyer River, the dam serves as a critical component of the local ecosystem. As efforts continue to monitor and maintain the dam's safety, it stands as a testament to the importance of responsible water resource management in the face of changing climates and environmental challenges.
Year Completed |
1977 |
Dam Length |
405 |
Dam Height |
32 |
River Or Stream |
TR-BOYER RIVER |
Primary Dam Type |
Earth |
Surface Area |
5.3 |
Drainage Area |
0.31 |
Nid Storage |
79 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
32 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Maple River At Mapleton
|
323cfs |
Soldier River At Pisgah
|
112cfs |
Boyer River At Logan
|
417cfs |
Little Sioux River Near Turin
|
1040cfs |
Monona-Harrison Ditch Near Turin
|
158cfs |
North Raccoon River Near Sac City
|
312cfs |
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.
Dozark Dam