Mosquito of Harrison Watershed Site 5-1 is a local government-owned dam located in Neola, Iowa, along the TR-Mosquito Creek.
Wind
Humidity
Built in 1985 by the USDA NRCS, this earth dam stands at a height of 52 feet and has a length of 825 feet, providing essential functions for fire protection, livestock, small fish ponds, and flood risk reduction. With a storage capacity of 194 acre-feet, the dam covers a surface area of 7.6 acres and drains a watershed area of 0.46 square miles.
Despite its low hazard potential and moderate risk assessment, Mosquito of Harrison Watershed Site 5-1 is regulated by the Iowa DNR and undergoes state permitting, inspection, and enforcement to ensure its safety and reliability. The dam's spillway type is uncontrolled, with no outlet gates or associated structures. While its condition is currently not rated, the dam serves as a vital infrastructure for water resource management and climate resilience in the Harrison County area. Additionally, the dam is in the Rock Island District and falls under the jurisdiction of the state of Iowa for regulatory oversight.
Year Completed |
1985 |
Dam Length |
825 |
Dam Height |
52 |
River Or Stream |
TR- MOSQUITO CR. |
Primary Dam Type |
Earth |
Surface Area |
7.6 |
Drainage Area |
0.46 |
Nid Storage |
194 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
52 |
Boyer River At Logan
|
417cfs |
West Nishnabotna River At Hancock
|
154cfs |
Missouri River At Omaha
|
17700cfs |
East Nishnabotna River Near Atlantic
|
143cfs |
Soldier River At Pisgah
|
112cfs |
Big Papillion Cr
|
38cfs |