East Fork Grand River Watershed Site A-93 Reservoir Report
Last Updated: December 13, 2025
East Fork Grand River Watershed Site A-93, located in Ringgold County, Iowa, is a key flood risk reduction structure designed by the USDA NRCS and completed in 2008.
°F
°F
mph
Wind
%
Humidity
Summary
This earth dam stands at a height of 23 feet, with a length of 612 feet, providing a storage capacity of 65 acre-feet for floodwaters. Despite its low hazard potential and moderate risk assessment, the dam is not currently rated for its condition and lacks a detailed emergency action plan.
Managed by the local government and regulated by the Iowa DNR, this site plays a crucial role in mitigating flood risks in the area and protecting the surrounding communities. With a drainage area of 0.19 square miles and a spillway width of 20 feet, the dam serves as a vital infrastructure for water resource management in the East Fork Grand River watershed. While there are no associated structures or outlet gates, the dam's primary purpose remains focused on flood risk reduction, aligning with its operational and regulatory requirements.
As water resource and climate enthusiasts explore the data for East Fork Grand River Watershed Site A-93, they will find a valuable example of dam infrastructure in the region. With its strategic location, design features, and regulatory oversight, this site showcases the collaborative efforts between federal agencies, state regulators, and local authorities to enhance water management practices. However, there is room for further assessment and planning to ensure the long-term resilience and effectiveness of this flood risk reduction structure in the face of changing climate patterns and increased water-related challenges.
Year Completed |
2008 |
Dam Length |
612 |
Dam Height |
23 |
River Or Stream |
Tr-East Fk Grand R |
Primary Dam Type |
Earth |
Surface Area |
4 |
Drainage Area |
0.19 |
Nid Storage |
65 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
23 |
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 A-93