Mosquito Creek Watershed Site 6-2 Reservoir Report
Last Updated: December 13, 2025
Mosquito Creek Watershed Site 6-2, located in Harrison County, Iowa, is a key water resource managed by the local government with oversight from the Iowa Department of Natural Resources.
°F
°F
mph
Wind
%
Humidity
Summary
Constructed in 1979 by the USDA NRCS, this earth dam serves multiple purposes including fire protection, stock watering, and small fish pond management. With a dam height of 40 feet and a storage capacity of 105 acre-feet, this structure plays a crucial role in flood risk reduction for the surrounding area.
The dam, situated on the TR-Mosquito Creek, covers a drainage area of 0.29 square miles and has a surface area of 4.9 acres. Despite its low hazard potential, the dam is classified as having a moderate risk level. While the condition assessment is currently not rated, the site is under state regulation and inspection, ensuring its ongoing safety and functionality. The dam's spillway type is uncontrolled, indicating that water release is managed passively, without the need for active control structures.
Overall, Mosquito Creek Watershed Site 6-2 stands as a vital water resource in the region, providing essential services for both agricultural and environmental needs. With its strategic location and design, this dam contributes to the overall water management and conservation efforts in the area, showcasing the importance of sustainable water resource management in mitigating climate impacts and ensuring community resilience.
Year Completed |
1979 |
Dam Length |
645 |
Dam Height |
40 |
River Or Stream |
TR-MOSQUITO CREEK |
Primary Dam Type |
Earth |
Surface Area |
4.9 |
Drainage Area |
0.29 |
Nid Storage |
105 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
40 |
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 Creek Watershed Site 6-2