East Fork Grand River Watershed Site E-49 Reservoir Report
Last Updated: December 15, 2025
East Fork Grand River Watershed Site E-49 is a local government-owned dam nestled in Ringgold County, Iowa, with a primary purpose of flood risk reduction.
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Summary
Built in 2010 by the USDA NRCS, this earth dam stands at a height of 31 feet and stretches out over 670 feet, providing a storage capacity of 135 acre-feet. Situated along the Tr to Lotts Creek, this structure plays a crucial role in mitigating flood risks in the region.
Managed by the Iowa DNR, this dam is regulated and permitted by the state, with regular inspections and enforcement measures in place to ensure its functionality and safety. Despite its low hazard potential and ungraded condition assessment, East Fork Grand River Watershed Site E-49 remains a vital component in the area's water resource management efforts. With a capacity to handle a maximum discharge of 204 cubic feet per second, this dam serves as a crucial line of defense against potential flooding events in the region.
Overall, East Fork Grand River Watershed Site E-49 serves as a testament to the collaborative efforts between local government agencies, like the Iowa DNR and USDA NRCS, in safeguarding communities against the impacts of extreme weather events. As climate change continues to pose challenges to water resource management, structures like this play a crucial role in enhancing resilience and protecting the environment and livelihoods of those living in the area.
Year Completed |
2010 |
Dam Length |
670 |
Dam Height |
31 |
River Or Stream |
Tr to Lotts Creek |
Primary Dam Type |
Earth |
Surface Area |
6 |
Drainage Area |
0.41 |
Nid Storage |
135 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
31 |
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 E-49