Kromminga Dam Reservoir Report
Nearby: Schultice Dam Steinbeck Dam
Last Updated: December 14, 2025
Kromminga Dam, located in Benton, Iowa, along the TR-Buckeye Creek, is a private-owned structure primarily used for recreation purposes.
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Summary
Constructed in 1970 by the USDA SCS, this Earth-type dam stands at a height of 17 feet and spans 464 feet in length. With a storage capacity of 50 acre-feet, the dam covers a surface area of 4 acres and serves a drainage area of 0.12 square miles.
Despite being classified with low hazard potential and a moderate risk assessment, Kromminga Dam is regulated, permitted, inspected, and enforced by the Iowa Department of Natural Resources. The dam's spillway is uncontrolled, and it has no outlet gates or associated structures. While its condition remains unrated, the dam's emergency action plan and risk management measures are yet to be fully assessed and updated. As a significant feature along the Iowa River, Kromminga Dam offers opportunities for outdoor recreation and water resource enthusiasts to appreciate its unique design and purpose in the region.
Year Completed |
1970 |
Dam Length |
464 |
Dam Height |
17 |
River Or Stream |
TR-BUCKEYE CREEK |
Primary Dam Type |
Earth |
Surface Area |
4 |
Drainage Area |
0.12 |
Nid Storage |
50 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
17 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Iowa River At Marengo
|
818cfs |
Iowa River Near Belle Plaine
|
966cfs |
Big Bear Creek At Ladora
|
51cfs |
Salt Creek Near Elberon
|
42cfs |
Walnut Creek Near Hartwick
|
13cfs |
Richland Creek Near Haven
|
12cfs |
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.
Kromminga Dam