East Fork Grand River Watershed Site A-122 Reservoir Report

Last Updated: April 27, 2026

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Located in Ringgold County, Iowa, the East Fork Grand River Watershed Site A-122 is a local government-owned structure designed by the USDA NRCS to address flood risk reduction in the area.


Summary

Completed in 2010, this earth dam stands at a height of 26 feet and spans a length of 550 feet, with a storage capacity of 64 acre-feet. The primary purpose of the dam is flood risk reduction, but it also serves other functions such as fish and wildlife pond creation, grade stabilization, and recreation.

With a low hazard potential and a not yet rated condition assessment, the East Fork Grand River Watershed Site A-122 remains a vital component of water resource management in the region. The dam's location on a tributary to the East Fork Grand River ensures that it plays a crucial role in regulating water flow and mitigating potential flood risks. Despite being state-regulated and inspected, the dam has not been assigned a risk assessment or management measures, highlighting the need for ongoing monitoring and maintenance to ensure its continued effectiveness in protecting the surrounding community from flooding events.

15-Day Long Term Forecast


Year Completed

2010

Dam Length

550

Dam Height

26

River Or Stream

Trib to E. Fork Grand River

Primary Dam Type

Earth

Surface Area

4

Drainage Area

0.19

Nid Storage

64

Outlet Gates

None

Hazard Potential

Low

Foundations

Soil

Nid Height

26
       
Seasonal Comparison

5-Day Hourly Forecast Detail

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.
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