Harmony Creek Watershed Site 5 Reservoir Report
Nearby: Harmony Creek Watershed Site 7
Last Updated: December 14, 2025
Harmony Creek Watershed Site 5, located in Harrison County, Iowa, is a vital water resource managed by the local government for fire protection, stock, and small fish pond purposes.
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Summary
Built in 1958, this earth dam stands at a height of 23 feet and spans 645 feet, with a storage capacity of 126 acre-feet. With a drainage area of 0.55 square miles, this dam plays a crucial role in flood risk reduction for the Harmony Creek watershed.
Despite its low hazard potential, Harmony Creek Watershed Site 5 is regulated by the Iowa Department of Natural Resources and undergoes regular inspections, enforcement, and permitting to ensure its safety and effectiveness. The dam is designed by the USDA NRCS and is located along the Harmony Creek, contributing to the overall water management efforts in the area. While the risk assessment for this site is moderate, with a rating of 3, there are currently no specific risk management measures in place.
With its strategic location and purpose, Harmony Creek Watershed Site 5 serves as a key component in the water resource infrastructure of the region. As climate change continues to impact water availability and quality, the management and maintenance of such sites are essential for sustainable water resource management and climate resilience in the Harmony Creek watershed.
Year Completed |
1958 |
Dam Length |
645 |
Dam Height |
23 |
River Or Stream |
HARMONY CREEK |
Primary Dam Type |
Earth |
Surface Area |
7.2 |
Drainage Area |
0.55 |
Nid Storage |
126 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
23 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Boyer River At Logan
|
417cfs |
Soldier River At Pisgah
|
112cfs |
West Nishnabotna River At Hancock
|
154cfs |
Little Sioux River Near Turin
|
1040cfs |
Monona-Harrison Ditch Near Turin
|
158cfs |
Missouri River At Omaha
|
17500cfs |
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.
Harmony Creek Watershed Site 6