Gahr Pond Dam 3 Reservoir Report
Nearby: Gahr Pond Dam 2 Gahr Pond Dam 1
Last Updated: December 25, 2025
Gahr Pond Dam 3, located in Macoupin, Illinois, is a privately owned earth dam designed by USDA NRCS in 1975 for irrigation purposes.
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Summary
The dam stands at 28 feet tall and spans 280 feet in length, with a storage capacity of 23 acre-feet. Situated on the TR- Macoupin Creek N river, the dam plays a crucial role in providing water for agricultural use in the region.
Managed by the Illinois Department of Natural Resources, Gahr Pond Dam 3 is regulated, inspected, and enforced to ensure its structural integrity and safety. Despite being classified as having low hazard potential, the dam's condition assessment is currently not available. The dam boasts a spillway width of 16 feet and a maximum discharge capacity of 122 cfs, making it a vital infrastructure for water resource management in the area.
The dam's location in the St. Louis District and its association with the Natural Resources Conservation Service highlight its importance in the local water supply infrastructure. With a history of serving the agricultural community since its completion, Gahr Pond Dam 3 stands as a testament to the collaborative efforts between private owners and government agencies in managing water resources for sustainable development.
Year Completed |
1975 |
Dam Length |
280 |
Dam Height |
28 |
River Or Stream |
TR- MACOUPIN CREEK N |
Primary Dam Type |
Earth |
Surface Area |
2 |
Drainage Area |
0.02 |
Nid Storage |
23 |
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.
Gahr Pond Dam 3