Mosquito Of Harrison Watershed Site 7-2 Reservoir Report
Last Updated: December 13, 2025
Located in the Harrison Watershed of Iowa, Mosquito of Harrison Watershed Site 7-2 is a local government-owned dam designed by USDA NRCS for fire protection, stock, and small fish pond purposes.
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Summary
Completed in 1992, this earth dam stands at 29 feet high and stretches 450 feet in length, with a storage capacity of 36 acre-feet. Situated along the TR-Mosquito Creek, this dam plays a crucial role in flood risk reduction for the surrounding area.
Managed by the Iowa DNR, Mosquito of Harrison Watershed Site 7-2 is regulated, permitted, inspected, and enforced by the state, ensuring its safety and compliance with regulatory standards. With a low hazard potential and a moderate risk assessment rating, this dam serves as a vital infrastructure for water resource management in the region. Despite being uncontrolled, the spillway type of this dam helps in managing water flow during heavy rainfall events, further emphasizing its importance in mitigating flood risks.
For water resource and climate enthusiasts, Mosquito of Harrison Watershed Site 7-2 presents a fascinating case study of a well-maintained dam with multiple purposes and a significant impact on the local ecosystem. With its strategic location along Mosquito Creek and its role in fire protection and flood risk reduction, this dam exemplifies the importance of sustainable water management practices in ensuring the resilience of communities against natural hazards.
Year Completed |
1992 |
Dam Length |
450 |
Dam Height |
29 |
River Or Stream |
TR- MOSQUITO CREEK |
Primary Dam Type |
Earth |
Surface Area |
2 |
Drainage Area |
1.55 |
Nid Storage |
36 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
29 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Boyer River At Logan
|
417cfs |
West Nishnabotna River At Hancock
|
154cfs |
Missouri River At Omaha
|
17700cfs |
Soldier River At Pisgah
|
112cfs |
East Nishnabotna River Near Atlantic
|
143cfs |
Big Papillion Cr
|
38cfs |
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.
Mosquito Of Harrison Watershed Site 7-2