Gennaro Dam Reservoir Report
Last Updated: December 12, 2025
Gennaro Dam, located in Union County, Iowa, is a privately owned earth dam that was completed in 2006 for the primary purpose of grade stabilization.
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Summary
The dam stands at a height of 26 feet and has a length of 405 feet, providing a storage capacity of 39 acre-feet. Situated on a tributary to Indian Creek, the dam helps to control the flow of water and protect against erosion in the area.
Managed by the Iowa Department of Natural Resources, Gennaro Dam is regulated and inspected regularly to ensure its safety and compliance with state standards. With a low hazard potential, the dam has not been rated for its condition assessment, but serves as an important structure for water resource management and supply in the region. Despite its relatively small surface area of 3 acres, the dam plays a crucial role in maintaining water quality and quantity for the surrounding area.
Overall, Gennaro Dam serves as a vital infrastructure for grade stabilization and water supply in Westerville, Iowa. Designed by USDA NRCS, the dam contributes to the conservation and management of water resources in the region, demonstrating the importance of private ownership in supporting sustainable water management practices. As climate change continues to impact water availability and quality, structures like Gennaro Dam play a crucial role in enhancing resilience and adaptation to changing environmental conditions.
Year Completed |
2006 |
Dam Length |
405 |
Dam Height |
26 |
River Or Stream |
Trib to Indian Creek |
Primary Dam Type |
Earth |
Surface Area |
3 |
Drainage Area |
0.08 |
Nid Storage |
39 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
26 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Thompson River At Davis City
|
22cfs |
East Fork 102 River At Bedford
|
1cfs |
Raccoon River At Van Meter
|
1640cfs |
South Raccoon River At Redfield
|
268cfs |
Nodaway River At Clarinda
|
47cfs |
North River Near Norwalk
|
48cfs |
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.
Gennaro Dam