Newton Lake Dam Reservoir Report
Nearby: Newton-Hager Lake Dam Marsh Lake Dam
Last Updated: December 21, 2025
Newton Lake Dam, located in Broadmore, Illinois, is a privately owned structure with a primary purpose of recreation.
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Summary
Completed in 1965, this earth dam stands at a height of 31 feet and spans 490 feet in length, creating a storage capacity of 78 acre-feet. Situated on the Trib Crow Creek, the dam has an uncontrolled spillway with a width of 98 feet, indicating its low hazard potential.
Managed by the Illinois Department of Natural Resources (IDNR), the dam is state-regulated and subject to regular inspections, with the last one conducted in July 2015. Despite its moderate risk assessment rating, the dam's condition assessment is currently listed as not available. While it lacks specific risk management measures and emergency action plans, its overall risk level is deemed moderate, highlighting the need for ongoing monitoring and maintenance to ensure the safety and integrity of the structure.
With its picturesque location and importance for recreational activities, Newton Lake Dam serves as a vital resource for the community. Water resource and climate enthusiasts can appreciate the engineering and environmental considerations involved in managing this dam, as well as the ongoing efforts to mitigate risks and safeguard the surrounding area from potential hazards.
Year Completed |
1965 |
Dam Length |
490 |
Dam Height |
31 |
River Or Stream |
TRIB CROW CREEK |
Primary Dam Type |
Earth |
Nid Storage |
78 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
31 |
Seasonal Comparison
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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.
Newton Lake Dam