Bunker Hill Reservoir 2 Dam Reservoir Report
Last Updated: December 23, 2025
Bunker Hill Reservoir 2 Dam, also known as Bertagnolli Park Dam, is a local government-owned structure located in Forest Homes, Illinois.
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Summary
Built in 1962 by designer Malvern W. Allen, this earth dam stands at a height of 35 feet and has a length of 405 feet. The primary purpose of the dam is for recreation, with a storage capacity of 38 acre-feet and a normal storage level of 31 acre-feet.
The dam is regulated by the Illinois Department of Natural Resources and undergoes regular inspections, with a low hazard potential and a moderate risk assessment rating. The spillway type is uncontrolled, and the outlet gates are also uncontrolled. The dam's location on the TRIB East Fork Wood River makes it a key feature in managing water resources in the area, providing recreational opportunities while also serving as a critical infrastructure for flood control and water supply management. With its historical significance and ongoing role in the local community, Bunker Hill Reservoir 2 Dam is a vital part of Illinois' water resource infrastructure.
Despite its age, the dam's condition assessment is not available, but it meets state permitting and inspection requirements. With a designated emergency action plan and emergency contacts in place, the dam is prepared to respond to any unforeseen events. As a prominent feature in Macoupin County, Illinois, the Bunker Hill Reservoir 2 Dam represents a blend of engineering excellence, natural beauty, and essential water resource management for the region.
Year Completed |
1962 |
Dam Length |
405 |
Dam Height |
35 |
River Or Stream |
TRIB EAST FORK WOOD RIVER |
Primary Dam Type |
Earth |
Nid Storage |
38 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
35 |
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.
Bunker Hill Reservoir 2 Dam