East Fork Grand River Watershed Site A-36 Reservoir Report
Last Updated: December 13, 2025
Located in Union County, Iowa, the East Fork Grand River Watershed Site A-36 is a Grade Stabilization dam constructed in 2001 by the USDA NRCS.
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Summary
The dam, standing at a height of 22 feet and with a length of 558 feet, serves the primary purpose of Grade Stabilization. Situated on Tr- Hachberry Creek, the dam has a drainage area of 0.18 square miles and a storage capacity of 61 acre-feet, providing essential flood control and water resource management for the surrounding area.
Managed by the Iowa Department of Natural Resources, this dam is regulated and inspected regularly to ensure its safety and functionality. With a low hazard potential and a moderate risk assessment rating, the East Fork Grand River Watershed Site A-36 plays a crucial role in reducing the risk of flooding and protecting the local ecosystem. Despite its remote location in the State of Missouri, this dam serves as a vital infrastructure for water resource enthusiasts and climate advocates alike.
Overall, the East Fork Grand River Watershed Site A-36 is a significant earth dam that contributes to the sustainable management of water resources in the region. With its controlled spillway and soil foundation, this dam exemplifies effective engineering practices for Grade Stabilization purposes. As a key feature in the Rock Island District, this dam underscores the importance of infrastructure in mitigating flood risks and enhancing water quality for the community.
Year Completed |
2001 |
Dam Length |
558 |
Dam Height |
22 |
River Or Stream |
Tr- Hachberry Creek |
Primary Dam Type |
Earth |
Surface Area |
3.3 |
Drainage Area |
0.18 |
Nid Storage |
61 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
22 |
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-36