Round Lake Dam
Round Lake Dam is an earth dam located in Lake County, Illinois, built in 1945. It carries a Significant hazard potential classification.
About Round Lake Dam
The primary purpose of Round Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Village Of Round Lake Beach (local government). It impounds the Trib Squaw Creek near Round Lake Beach.
The dam stands 9 feet tall and stretches 140 feet across, creates a reservoir covering 242 acres, has a maximum storage capacity of 1,484 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1945, the structure is well-established, with more than 75 years of service.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. The most recent inspection on record was 10/31/2023.
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Location
| State | Illinois |
| County | Lake |
| Nearest City | Round Lake Beach |
| River/Stream | Trib Squaw Creek |
| Coordinates | 42.36861, -88.08911 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 9 ft |
| Dam Height | 9 ft |
| Dam Length | 140 ft |
| Year Completed | 1945 (81 years old) |
Storage & Hydraulics
| NID Storage | 1,484 acre-ft |
| Max Storage | 1,484 acre-ft |
| Normal Storage | 976 acre-ft |
| Surface Area | 242 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 187 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | VILLAGE OF ROUND LAKE BEACH |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Not Available |
| Last Inspection | 10/31/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00593 |
| Federal ID | IL00593 |
| More Info | State Dam Safety Program |