Greiner Dam Reservoir Report
Last Updated: December 6, 2025
Greiner Dam, located in Wapello County, Iowa, was completed in 1968 by the USDA NRCS and serves multiple purposes including fire protection and creating a small fish pond.
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Summary
This earth dam stands at a height of 21 feet and stretches 470 feet in length, with a storage capacity of 68-acre-feet and a surface area of 5 acres. The dam is regulated by the Iowa DNR and is inspected, permitted, and enforced by state authorities, ensuring its safety and compliance with environmental regulations.
With a low hazard potential and a moderate risk assessment rating, Greiner Dam plays a crucial role in managing water resources in the area. The dam is situated on TR-Buckeye Creek, providing a vital source of water for agricultural and recreational activities in the region. Owned privately, Greiner Dam is designed to withstand potential risks and emergencies, although its condition assessment is currently not rated. Despite this, the dam continues to be a reliable asset for the community, contributing to water conservation efforts and supporting local wildlife and ecosystems.
Year Completed |
1968 |
Dam Length |
470 |
Dam Height |
21 |
River Or Stream |
TR-BUCKEYE CREEK |
Primary Dam Type |
Earth |
Surface Area |
5 |
Drainage Area |
0.22 |
Nid Storage |
68 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
21 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Des Moines River At Ottumwa
|
1090cfs |
Fox River At Bloomfield
|
7cfs |
North Skunk River Near Sigourney
|
97cfs |
Des Moines River At Keosauqua
|
1800cfs |
South Skunk River Near Oskaloosa
|
485cfs |
Cedar Creek Near Oakland Mills
|
10cfs |
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.
Greiner Dam