Dorfler Dam Reservoir Report
Nearby: Lincoln Dam Grau Dam
Last Updated: December 17, 2025
Dorfler Dam, located in Crawford County, Iowa, is a privately owned structure designed by the USDA NRCS and completed in 1971.
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Summary
The dam, primarily used for fire protection, stock, and small fish pond purposes, stands at a height of 34 feet and spans 500 feet in length. It has a storage capacity of 50 acre-feet, with a normal storage level of 25 acre-feet.
The dam, situated on the TR-Soldier River, is regulated by the Iowa Department of Natural Resources and undergoes regular inspections to ensure its safety and functionality. With a low hazard potential and a moderate risk assessment rating, the dam does not have a designated emergency action plan in place. Despite its simple design and limited hydraulic features, Dorfler Dam serves as an important asset for water resource management and recreational activities in the area.
While Dorfler Dam may not be as large or complex as other structures, its significance lies in its role in maintaining water resources and providing essential services to the community. As climate change continues to impact water availability and quality, the proper management and maintenance of dams like Dorfler will be crucial in ensuring the resilience and sustainability of our water infrastructure.
Year Completed |
1971 |
Dam Length |
500 |
Dam Height |
34 |
River Or Stream |
TR-SOLDIER RIVER |
Primary Dam Type |
Earth |
Surface Area |
4 |
Drainage Area |
0.23 |
Nid Storage |
50 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
34 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Maple River At Mapleton
|
323cfs |
Little Sioux River Near Turin
|
1040cfs |
Monona-Harrison Ditch Near Turin
|
158cfs |
Little Sioux River At Correctionville
|
327cfs |
West Fork Ditch At Hornick
|
80cfs |
Soldier River At Pisgah
|
112cfs |
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.
Dorfler Dam