Cloud Dam Reservoir Report
Nearby: Schlies Dam Plagge Dam
Last Updated: December 15, 2025
Cloud Dam, located in Mapleton, Iowa, is a private earth dam completed in 1995 by the USDA NRCS with a primary purpose of fire protection and creating a small fish pond.
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Summary
The dam has a height of 32 feet, a length of 510 feet, and a storage capacity of 97 acre-feet. Situated on the TR-Maple River, the dam serves as a critical resource for water storage and management in the region, with a surface area of 5.9 acres and a drainage area of 0.22 square miles.
Despite being classified as a low hazard potential structure, Cloud Dam is regulated by the Iowa DNR and undergoes regular inspections, permitting, and enforcement actions to ensure its safety and effectiveness. The dam features an uncontrolled spillway type and is designed to manage moderate risks associated with its operation. With its location in Monona County, Iowa, Cloud Dam plays a vital role in providing water resources for irrigation, fire protection, and recreational activities in the area.
Managed by a private owner, Cloud Dam showcases the importance of sustainable water resource management and climate resilience in the face of changing environmental conditions. As a key infrastructure for water storage and flood control, the dam represents a collaborative effort between state agencies, designers, and regulators to ensure the safety and functionality of the structure for the benefit of the local community and ecosystem.
Year Completed |
1995 |
Dam Length |
510 |
Dam Height |
32 |
River Or Stream |
TR- MAPLE RIVER |
Primary Dam Type |
Earth |
Surface Area |
5.9 |
Drainage Area |
0.22 |
Nid Storage |
97 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
32 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Maple River At Mapleton
|
323cfs |
West Fork Ditch At Hornick
|
80cfs |
Little Sioux River At Correctionville
|
327cfs |
Little Sioux River Near Turin
|
1040cfs |
Monona-Harrison Ditch Near Turin
|
158cfs |
Soldier River At Pisgah
|
112cfs |
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.
Cloud Dam