Walnut Point State Park Lake Dam
Walnut Point State Park Lake Dam is an earth dam located in Douglas County, Illinois, built in 1967. It carries a Low hazard potential classification.
About Walnut Point State Park Lake Dam
The primary purpose of Walnut Point State Park Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Illinois Department Of Natural Resources (state). It impounds the Trib Embarras River near Oakland-offstream.
The dam stands 46 feet tall and stretches 702 feet across, creates a reservoir covering 58 acres, has a maximum storage capacity of 1,238 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1967, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 11/22/2023.
At 46 feet, this dam is taller than 91% of dams nationwide.
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Location
| State | Illinois |
| County | Douglas |
| Nearest City | Oakland-offstream |
| River/Stream | Trib Embarras River |
| Coordinates | 39.69495, -88.03361 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 46 ft |
| Dam Height | 46 ft |
| Dam Length | 702 ft |
| Year Completed | 1967 (59 years old) |
Storage & Hydraulics
| NID Storage | 1,238 acre-ft |
| Max Storage | 1,238 acre-ft |
| Normal Storage | 656 acre-ft |
| Surface Area | 58 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 2,925 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | ILLINOIS DEPARTMENT OF NATURAL RESOURCES |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 11/22/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00131 |
| Federal ID | IL00131 |
| More Info | State Dam Safety Program |