East Fork Grand River Watershed Site B-70 Reservoir Report
Last Updated: December 14, 2025
East Fork Grand River Watershed Site B-70 is a local government-owned dam located in Ringgold County, Iowa, near the city of State of Missouri.
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Summary
Built in 2007 by the USDA NRCS, this earth dam stands at a height of 32 feet and has a length of 540 feet, providing flood risk reduction for the Tr-East Fk Grand River. With a storage capacity of 78 acre-feet, the dam covers a drainage area of 0.24 square miles and has a spillway width of 24 feet.
Despite being classified as having a low hazard potential, the dam's condition assessment is currently listed as "Not Rated." The risk assessment for East Fork Grand River Watershed Site B-70 is moderate, with a DSAC assigned date yet to be determined. While the dam meets state regulatory requirements for permitting, inspection, and enforcement, there are no specific emergency action plans or inundation maps prepared for this site. Overall, this dam serves an important role in flood risk reduction within the region, highlighting the ongoing need for proper maintenance and monitoring to ensure its continued effectiveness in protecting the surrounding area from potential hazards.
Year Completed |
2007 |
Dam Length |
540 |
Dam Height |
32 |
River Or Stream |
Tr-East Fk Grand R |
Primary Dam Type |
Earth |
Surface Area |
4 |
Drainage Area |
0.24 |
Nid Storage |
78 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
32 |
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-70