Mcadams Pond Dam 1 Reservoir Report
Nearby: Brighton Lake Dam Shaw Lake Dam
Last Updated: December 22, 2025
Mcadams Pond Dam 1, located in Alton, Illinois, was completed in 1977 with a primary purpose of serving as a Fish and Wildlife Pond.
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Summary
The dam, standing at a height of 30 feet and stretching 286 feet in length, was designed by the USDA NRCS and is primarily made of earth and stone materials. The dam has a storage capacity of 69 acre-feet, with a normal storage level of 48 acre-feet, and covers a surface area of 4 acres.
Managed by a private owner and regulated by the Illinois Department of Natural Resources, Mcadams Pond Dam 1 has a low hazard potential and a moderate risk assessment rating. The dam is equipped with an uncontrolled spillway measuring 41 feet in width to manage water discharge. While the condition assessment of the dam is not currently available, it undergoes regular inspections with the last one conducted in June 2018. With its location on TR-Wood River Creek NW and its contribution to the local ecosystem as a Fish and Wildlife Pond, Mcadams Pond Dam 1 serves as an important water resource in the region for both environmental and recreational purposes.
Year Completed |
1977 |
Dam Length |
286 |
Dam Height |
30 |
River Or Stream |
TR- WOOD RIVER CREEK NW |
Primary Dam Type |
Earth |
Surface Area |
4 |
Drainage Area |
0.06 |
Nid Storage |
69 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
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.
Mcadams Pond Dam 1