East Fork Grand River Watershed Site B-40 Reservoir Report
Last Updated: December 14, 2025
Located in Ringgold County, Iowa, the East Fork Grand River Watershed Site B-40 is a flood risk reduction structure designed by the USDA NRCS and completed in 2004.
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Summary
This earth dam stands at a height of 31 feet and stretches 614 feet in length, with a storage capacity of 104 acre-feet. Situated on TR- Bealls Creek, this structure plays a crucial role in mitigating flood risks in the area, with a low hazard potential and a moderate risk assessment rating.
Managed by the Iowa Department of Natural Resources, this dam is state-regulated, permitted, inspected, and enforced to ensure its structural integrity and effectiveness in flood control. Its primary purpose is flood risk reduction, serving as a vital infrastructure in safeguarding the surrounding communities from potential flooding events. The dam's location at NE,SW,S17,T068N,R29W and its coordinates of 40.6875 latitude and -94.2164 longitude make it a strategic asset in water resource management in the region.
With a surface area of 5.4 acres and a drainage area of 0.31 square miles, the East Fork Grand River Watershed Site B-40 not only provides flood protection but also contributes to water resource management in the area. As a site regulated by the Iowa DNR and designed by the Natural Resources Conservation Service, it represents a collaborative effort to ensure the sustainability of water resources and resilience to climate challenges in the East Fork Grand River Watershed.
Year Completed |
2004 |
Dam Length |
614 |
Dam Height |
31 |
River Or Stream |
TR- BEALLS CREEK |
Primary Dam Type |
Earth |
Surface Area |
5.4 |
Drainage Area |
0.31 |
Nid Storage |
104 |
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 B-40