East Fork Grand River Watershed Site B-68 Reservoir Report
Last Updated: December 15, 2025
Located in Ringgold County, Iowa, the East Fork Grand River Watershed Site B-68 is a local government-owned structure designed by the USDA NRCS for flood risk reduction.
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Summary
Completed in 2004, this earth dam stands at a height of 31 feet and has a length of 545 feet, with a storage capacity of 100 acre-feet. With a drainage area of 0.31 square miles, the dam serves the primary purpose of flood risk reduction along the TR- East Fork Grand River.
Despite its low hazard potential and moderate risk assessment, the condition of the structure is currently not rated, and there is no information on its last inspection date or emergency action plan preparedness. Managed by the Iowa DNR, the East Fork Grand River Watershed Site B-68 is regulated, permitted, inspected, and enforced by state agencies to ensure its safe and effective operation. With its location in the heart of the Midwest, this dam plays a crucial role in protecting the surrounding communities from potential flooding events and demonstrates the ongoing commitment to water resource management in the region.
Year Completed |
2004 |
Dam Length |
545 |
Dam Height |
31 |
River Or Stream |
TR- EAST FORK GRAND RIVER |
Primary Dam Type |
Earth |
Surface Area |
5.2 |
Drainage Area |
0.31 |
Nid Storage |
100 |
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-68