Nugent-Schpanski 4 Lake Dam Reservoir Report
Last Updated: December 22, 2025
Nugent-Schpanski 4 Lake Dam, located in Nutwood-Offstream, Illinois, is a private earth dam completed in 1954 by the USDA NRCS.
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Summary
With a primary purpose of irrigation and secondary purpose of recreation, this dam stands at a height of 31 feet and has a length of 330 feet, providing a storage capacity of 73 acre-feet. The dam sits on the TRIB SUGAR HOLLOW, with a drainage area of 0.1 square miles, and features an uncontrolled spillway with a width of 44 feet.
Despite being classified as having a low hazard potential, the dam poses a moderate risk and has a moderate risk assessment rating of 3. While the condition assessment is not available, the dam has not been modified in recent years and has a history of regular inspections, with the last one conducted in September 2013. The dam is regulated by the Illinois Department of Natural Resources and is subject to state permitting, inspection, and enforcement.
Nugent-Schpanski 4 Lake Dam serves as a vital water resource for irrigation purposes in the area, providing necessary water storage for agricultural activities. Its location in Jersey County, Illinois, highlights the importance of managing and maintaining this structure to ensure the safety of surrounding communities and the sustainability of water resources in the region.
Year Completed |
1954 |
Dam Length |
330 |
Dam Height |
31 |
River Or Stream |
TRIB SUGAR HOLLOW |
Primary Dam Type |
Earth |
Surface Area |
7 |
Drainage Area |
0.1 |
Nid Storage |
73 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
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.
Nugent-Schpanski 4 Lake Dam