East Fork Grand River Watershed Site D-28 Reservoir Report
Last Updated: December 13, 2025
East Fork Grand River Watershed Site D-28 is a flood risk reduction structure located in Ringgold County, Iowa.
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Summary
This earth dam, designed by the USDA NRCS and completed in 2008, stands at a height of 24 feet and spans 726 feet across Tr-Lotts Creek. With a maximum storage capacity of 97 acre-feet, this dam serves to protect the surrounding area from potential flooding events.
Managed by the Iowa DNR and falling under state jurisdiction, this dam is regulated, permitted, inspected, and enforced to ensure its functionality and safety. Despite its low hazard potential and moderate risk assessment, the condition of East Fork Grand River Watershed Site D-28 is currently not rated. With a drainage area of 0.29 square miles and a surface area of 6 acres, this structure plays a crucial role in managing water resources in the region and mitigating flood risks for local communities.
East Fork Grand River Watershed Site D-28 is a vital piece of infrastructure contributing to the overall water resource management efforts in the area. Its strategic location and design by the Natural Resources Conservation Service demonstrate a commitment to flood risk reduction and environmental protection. As climate change continues to impact weather patterns, structures like this earth dam will play an increasingly important role in safeguarding communities and ecosystems from the threats of flooding and water scarcity.
Year Completed |
2008 |
Dam Length |
726 |
Dam Height |
24 |
River Or Stream |
Tr-Lotts Creek |
Primary Dam Type |
Earth |
Surface Area |
6 |
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 Grand River Watershed Site D-28