Wohlers Dam Reservoir Report
Last Updated: December 13, 2025
Wohlers Dam, located in Crescent, Iowa, is a privately owned structure designed by the USDA NRCS and regulated by the Iowa DNR.
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Summary
Completed in 1959, this earth dam stands at a height of 40 feet and stretches 810 feet in length, with a storage capacity of 180 acre-feet. The primary purpose of Wohlers Dam is for fire protection, stock, or as a small fish pond, serving the local community in Pottawattamie County.
Despite its low hazard potential and moderate risk assessment rating, Wohlers Dam has not been rated for its condition assessment. With a drainage area of 1.11 square miles and a surface area of 9.3 acres, this structure plays a crucial role in managing water resources along the TR-PIGEON CREEK. While the dam has not been modified in recent years, it continues to be inspected regularly by state authorities to ensure its safety and compliance with regulatory standards.
Water resource and climate enthusiasts will appreciate the significance of Wohlers Dam in maintaining water levels for fire protection and supporting local wildlife. As a key element of the area's infrastructure, this earth dam serves as a vital resource for the community and highlights the importance of sustainable water management practices in the face of changing climate conditions.
Year Completed |
1959 |
Dam Length |
810 |
Dam Height |
40 |
River Or Stream |
TR-PIGEON CREEK |
Primary Dam Type |
Earth |
Surface Area |
9.3 |
Drainage Area |
1.11 |
Nid Storage |
180 |
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 |
Big Papillion Cr
|
38cfs |
Soldier River At Pisgah
|
112cfs |
East Nishnabotna River Near Atlantic
|
143cfs |
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.
Wohlers Dam