Gahr Pond Dam 2 Reservoir Report

Last Updated: December 22, 2025

Located in Macoupin County, Illinois, Gahr Pond Dam 2 is a privately owned earth dam designed by the USDA NRCS and completed in 1975 for the primary purpose of irrigation.


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Summary

This dam, standing at a height of 36 feet and a length of 210 feet, provides a storage capacity of 18 acre-feet and serves the surrounding agricultural community in the Jalapa area. Situated on the TR- Macoupin Creek N river, this dam is regulated by the Illinois Department of Natural Resources and undergoes regular state inspections, enforcement, and permitting processes to ensure its safety and compliance with state regulations.

Despite its low hazard potential, Gahr Pond Dam 2 plays a crucial role in managing water resources in the region and supporting irrigation activities for local farmers. With a normal storage capacity of 12 acre-feet and a maximum discharge of 106 cubic feet per second, this dam contributes to the efficient allocation of water for agricultural purposes. While the dam's condition assessment is currently not available, it remains a vital infrastructure for water management in the area, highlighting the importance of maintaining and monitoring such structures to ensure their long-term functionality and safety. For water resource and climate enthusiasts, Gahr Pond Dam 2 serves as a fascinating example of the intersection between infrastructure development, water management, and environmental stewardship.

Year Completed

1975

Dam Length

210

Dam Height

36

River Or Stream

TR- MACOUPIN CREEK N

Primary Dam Type

Earth

Surface Area

1

Drainage Area

0.01

Nid Storage

18

Hazard Potential

Low

Foundations

Soil

Nid Height

36
       
Seasonal Comparison

Weather Forecast

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.