Daly Dam Reservoir Report
Last Updated: December 15, 2025
Daly Dam, located in Monona, Iowa, is a privately owned structure with a primary purpose of fire protection, stock, or small fish pond.
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Summary
Built in 1985 by the USDA NRCS, this earth dam stands at a height of 42 feet and spans 225 feet in length. The dam has a storage capacity of 21 acre-feet and covers a surface area of 0.8 acres, serving as a vital water resource for the local community.
Managed by the Iowa Department of Natural Resources, Daly Dam is regulated, inspected, and enforced to ensure its safety and functionality. Despite being classified as having a low hazard potential, the dam is rated as moderate in terms of risk, with a moderate risk assessment score of 3. While the dam's condition assessment is currently not rated, its risk management measures and emergency action plans are being monitored to meet safety guidelines and preparedness standards.
Situated along the TR-Maple River, Daly Dam plays a crucial role in water management and conservation efforts in the region. With its important functions for fire protection and aquatic life support, the dam stands as a key infrastructure for both local water resources and climate enthusiasts to appreciate and monitor for its environmental impact and sustainability.
Year Completed |
1985 |
Dam Length |
225 |
Dam Height |
42 |
River Or Stream |
TR- MAPLE R. |
Primary Dam Type |
Earth |
Surface Area |
0.8 |
Drainage Area |
0.18 |
Nid Storage |
21 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
42 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Maple River At Mapleton
|
323cfs |
Little Sioux River Near Turin
|
1040cfs |
Monona-Harrison Ditch Near Turin
|
158cfs |
West Fork Ditch At Hornick
|
80cfs |
Soldier River At Pisgah
|
112cfs |
Little Sioux River At Correctionville
|
327cfs |
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.
Daly Dam