Simpson Creek Watershed Site 5 Reservoir Report
Last Updated: December 13, 2025
Simpson Creek Watershed Site 5, located in Fremont County, Iowa, is a vital water resource managed by the local government and regulated by the Iowa Department of Natural Resources.
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Summary
Constructed in 1958 by the USDA NRCS, this earth dam serves multiple purposes including fire protection, stock watering, and flood risk reduction for the surrounding area. With a dam height of 36 feet and a storage capacity of 36 acre-feet, this structure plays a crucial role in managing water flow and mitigating potential hazards.
The dam's low hazard potential and moderate risk assessment make it a key asset for the community, providing essential protection and support during emergencies. While not currently rated for condition assessment, the structure is regularly inspected and maintained to ensure its functionality and safety. With a drainage area of 0.37 square miles and a surface area of 2 acres, Simpson Creek Watershed Site 5 plays a significant role in water management and conservation efforts in the region, demonstrating the importance of sustainable infrastructure for climate resilience.
As part of the larger Simpson Creek watershed, Site 5 contributes to the overall water quality and quantity in the area, highlighting the interconnected nature of water resources and the need for coordinated management strategies. With its primary purpose as a fire protection and stock pond, this dam serves as a valuable resource for both human and ecological needs, emphasizing the importance of sustainable water infrastructure for the well-being of communities and the environment.
Year Completed |
1958 |
Dam Length |
529 |
Dam Height |
36 |
River Or Stream |
SIMPSON CREEK |
Primary Dam Type |
Earth |
Surface Area |
2 |
Drainage Area |
0.37 |
Nid Storage |
36 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
36 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Nishnabotna River Above Hamburg
|
605cfs |
Missouri River At Nebraska City
|
25100cfs |
West Nishnabotna River At Randolph
|
420cfs |
Weeping Water Creek At Union
|
20cfs |
Little Nemaha River At Auburn
|
82cfs |
Tarkio River At Fairfax Mo
|
55cfs |
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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Waubonsie State Park
|
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Waubonsie State Park Campground
|
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Victorian Acres Campground
|
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Riverview Marina State Rec Area
|
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Camp Woodmen
|
Simpson Creek Watershed Site 5