Pratt Bros.Pond Dam Reservoir Report
Last Updated: December 21, 2025
Pratt Bros.
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Summary
Pond Dam, located in Jalapa, Illinois, was completed in 1977 by the USDA NRCS and is privately owned. The earth dam stands at a height of 27 feet and spans 300 feet in length, with a storage capacity of 36 acre-feet. Its primary purpose is designated as "Other," with a low hazard potential and a moderate risk assessment rating of 3. The dam is state-regulated and inspected by the Illinois Department of Natural Resources, with a spillway width of 24 feet and uncontrolled outlet gates.
Situated in Macoupin County near the TR- Joe's Creek NE, this dam serves as a vital structure for water resource management. With a drainage area of 0.09 square miles and a maximum discharge of 188 cubic feet per second, Pratt Bros. Pond Dam plays a crucial role in controlling water flow and providing flood protection to the surrounding areas. Despite its age, the dam's condition assessment is currently listed as "Not Available," highlighting the need for continued monitoring and maintenance to ensure its long-term functionality and safety.
The dam's strategic location and design make it an essential component of the local water infrastructure, supporting both agricultural and environmental needs in the region. As water resource and climate enthusiasts, the Pratt Bros. Pond Dam presents an intriguing case study in dam management and the intersection of human-made structures with natural ecosystems. Its unique features, including stone core types and uncontrolled spillways, showcase the complexity of balancing water management needs with environmental considerations in the face of a changing climate.
Year Completed |
1977 |
Dam Length |
300 |
Dam Height |
27 |
River Or Stream |
TR- JOES CREEK NE |
Primary Dam Type |
Earth |
Surface Area |
3 |
Drainage Area |
0.09 |
Nid Storage |
36 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
27 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Macoupin Creek Near Kane
|
20cfs |
Spring Creek At Springfield
|
6cfs |
South Fork Sangamon River Nr Rochester
|
14cfs |
Illinois River At Valley City
|
4670cfs |
Sangamon River At Riverton
|
188cfs |
Sangamon River At Petersburg
|
199cfs |
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.
Pratt Bros.Pond Dam