Kinmundy New Lake Dam Reservoir Report
Last Updated: December 5, 2025
Kinmundy New Lake Dam, located in Marion, Illinois, was completed in 1998 by the designer Woodfall, Griggs & Jenkins.
°F
°F
mph
Wind
%
Humidity
Summary
This private dam serves multiple purposes, including recreation and water supply, with a primary focus on recreational activities. The dam stands at a height of 38 feet and has a length of 1250 feet, providing a storage capacity of 2250 acre-feet and a surface area of 100 acres.
The dam regulates the flow of the TRIB EAST FORK KASKASKIA RIVER and has a spillway width of 480 feet. Despite being privately owned, the dam is regulated by the Illinois Department of Natural Resources (IDNR) and undergoes regular inspections. With a high hazard potential and moderate risk assessment, the dam is considered to be in a satisfactory condition, although detailed risk management measures are not specified in the available data.
Overall, Kinmundy New Lake Dam presents an intriguing case study for water resource and climate enthusiasts, showcasing the intersection of private ownership, recreational use, and regulatory oversight in ensuring the safety and sustainability of water infrastructure in the region.
Year Completed |
1998 |
Dam Length |
1250 |
Dam Height |
38 |
River Or Stream |
TRIB EAST FORK KASKASKIA RIVER |
Primary Dam Type |
Earth |
Surface Area |
100 |
Drainage Area |
1.91 |
Nid Storage |
2250 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
38 |
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.
Kinmundy New Lake Dam