Harry Mullens Pond Dam 1 Reservoir Report
Last Updated: December 21, 2025
Harry Mullens Pond Dam 1, also known as Mullens Pond, is a private dam located in Macoupin, Illinois.
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Summary
Built in 1977 by USDA NRCS, this earth dam stands at 32 feet high and stretches 250 feet in length, with a primary purpose of serving as a Fish and Wildlife Pond. The dam has a storage capacity of 44 acre-feet and a normal storage of 30 acre-feet, with a surface area of 3 acres and a drainage area of 0.02 square miles.
Managed by the Illinois Department of Natural Resources, Harry Mullens Pond Dam 1 is regulated, permitted, inspected, and enforced by state authorities to ensure its safety and compliance with regulations. The dam has a low hazard potential and a moderate risk assessment rating. With an uncontrolled spillway and outlet gates, the dam is designed to handle a maximum discharge of 90 cubic feet per second, providing vital water resources for the surrounding area.
Situated near the TR- SOLOMON CREEK NE, Harry Mullens Pond Dam 1 plays a crucial role in supporting local fish and wildlife populations. Although its condition assessment is not available, the dam continues to fulfill its intended purpose and contribute to the ecological balance of the region. As a key structure in the Rock Island District, this dam showcases the importance of private initiatives in water resource management and climate conservation efforts.
Year Completed |
1977 |
Dam Length |
250 |
Dam Height |
32 |
River Or Stream |
TR- SOLOMON CREEK NE |
Primary Dam Type |
Earth |
Surface Area |
3 |
Drainage Area |
0.02 |
Nid Storage |
44 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
32 |
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.
Harry Mullens Pond Dam 1