Baldwin Plant Cooling Lake Dikes Reservoir Report
Last Updated: December 25, 2025
Baldwin Plant Cooling Lake Dikes, located in St.
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Summary
Clair County, Illinois, were designed by HARZA ENGINEERING CO. and completed in 1968. These dikes serve multiple purposes, including recreational activities and water resource management. The primary dam type is earth, with a structural height of 54.5 feet and a length of 38,280 feet. The lake has a normal storage capacity of 26,008 acre-feet and a drainage area of 4.8 square miles, with a controlled spillway and other controlled outlet gates.
Managed by a public utility, Baldwin Plant Cooling Lake Dikes are regulated by the Illinois Department of Natural Resources and undergo regular inspections. The hazard potential of the dam is considered high, with a very high risk assessment rating. Emergency action plans have been prepared, with the last revision in August 2020. Despite the lack of available condition assessment data, the dam's risk management measures are in place to ensure the safety and security of the surrounding area.
With its strategic location along the Little Doza Creek, Baldwin Plant Cooling Lake Dikes play a crucial role in water resource management in the region. Climate enthusiasts and water resource experts can appreciate the engineering feat behind these dikes, as well as the measures in place to mitigate potential risks and ensure the dam's integrity for years to come.
Year Completed |
1968 |
Dam Length |
38280 |
Dam Height |
54.5 |
River Or Stream |
LITTLE DOZA CREEK |
Primary Dam Type |
Earth |
Surface Area |
203 |
Drainage Area |
4.8 |
Nid Storage |
36341 |
Outlet Gates |
Other Controlled |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
55 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Kaskaskia River At New Athens
|
551cfs |
Richland Creek Near Hecker
|
13cfs |
Silver Creek Near Freeburg
|
28cfs |
Kaskaskia River Near Venedy Station
|
923cfs |
Mississippi River At Chester
|
88900cfs |
Little Crooked Creek Near New Minden
|
1cfs |
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.
Baldwin Plant Cooling Lake Dikes