East Fork Of Grand River Watershed Site D-28 Reservoir Report
Last Updated: December 13, 2025
East Fork of Grand River Watershed Site D-28 is a flood risk reduction infrastructure located in Ringgold County, Iowa.
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Summary
Managed by the local government and designed by NRCS, this earth dam stands at 24 feet high and spans 700 feet in length. Completed in 2008, it serves the primary purpose of flood risk reduction in the area, with a storage capacity of 97 acre-feet and a normal storage of 28 acre-feet.
Situated in the watershed of a tributary to Lotts Creek, this dam has a low hazard potential and is currently rated as not assessed. While its spillway is uncontrolled, the structure has not undergone any modifications since its completion. Despite being designated as having a moderate risk level, the dam has not been inspected or assessed for its emergency action plan readiness. With its location in a region prone to flooding, the East Fork of Grand River Watershed Site D-28 plays a crucial role in managing water resources and mitigating potential risks in the area.
Year Completed |
2008 |
Dam Length |
700 |
Dam Height |
24 |
River Or Stream |
Trib to Lotts Creek |
Primary Dam Type |
Earth |
Surface Area |
5.7 |
Drainage Area |
0.29 |
Nid Storage |
97 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
24 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
East Fork Of Grand River Watershed Site D-28