East Fork Grand River Watershed Site B-67 Reservoir Report
Last Updated: December 15, 2025
East Fork Grand River Watershed Site B-67 is a flood risk reduction structure located in the Ringgold County, Iowa.
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Summary
Constructed in 2010 by the USDA NRCS, this earth dam stands at a height of 28 feet and spans 550 feet in length, providing storage capacity of 140 acre-feet with a drainage area of 0.43 square miles. The primary purpose of this dam is to mitigate flood risks in the area, while also serving secondary purposes such as fish and wildlife pond creation, grade stabilization, and recreation enhancement.
Situated in the tributary to the East Fork Grand River, this dam plays a crucial role in managing water resources and protecting the surrounding environment. With a low hazard potential and condition assessment not yet rated, East Fork Grand River Watershed Site B-67 is regulated by the Iowa DNR and undergoes regular inspections, permitting, and enforcement to ensure its structural integrity and functionality. Although the dam has not been modified since its completion, it continues to serve the community effectively in reducing flood risks and enhancing water quality in the region.
As part of the larger water management system under the jurisdiction of the State of Iowa, East Fork Grand River Watershed Site B-67 provides valuable insights into sustainable infrastructure design and management practices. With its strategic location and multiple benefits, including recreational opportunities and habitat enhancement, this dam exemplifies the importance of integrated watershed management in addressing climate change impacts and ensuring water resource sustainability for future generations.
Year Completed |
2010 |
Dam Length |
550 |
Dam Height |
28 |
River Or Stream |
Trib to E. Fork Grand River |
Primary Dam Type |
Earth |
Surface Area |
8 |
Drainage Area |
0.43 |
Nid Storage |
140 |
Outlet Gates |
None |
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 B-67