East Fork Grand River Watershed Site D-80 Reservoir Report
Last Updated: December 12, 2025
Located in Ringgold County, Iowa, the East Fork Grand River Watershed Site D-80 is a flood risk reduction dam designed by NRCS and completed in 2006.
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Summary
This earth dam, with a height of 28 feet and a length of 560 feet, serves the primary purpose of mitigating flood risks in the area. With a storage capacity of 110 acre-feet and a drainage area of 0.34 square miles, the dam plays a crucial role in managing water flow along TR- Lotts Creek.
The dam is under the jurisdiction of the Iowa Department of Natural Resources and is regulated, permitted, inspected, and enforced by the state. Despite its low hazard potential, the dam's risk assessment is moderate, indicating the need for ongoing monitoring and management measures. While the condition of the dam is currently not rated, its location and purpose make it an essential structure for water resource management in the region. Enthusiasts of water resources and climate will find East Fork Grand River Watershed Site D-80 an intriguing case study in flood risk reduction and watershed management.
Year Completed |
2006 |
Dam Length |
560 |
Dam Height |
28 |
River Or Stream |
TR- LOTTS CREEK |
Primary Dam Type |
Earth |
Surface Area |
6.2 |
Drainage Area |
0.34 |
Nid Storage |
110 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
28 |
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-80