Lake Mendota Dam
Illinois — LaSalle County — MENDOTA CREEK
Location
| State | Illinois |
| County | LaSalle |
| River | MENDOTA CREEK |
| Coordinates | 41.55705, -89.12874 |
Physical Characteristics
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 2,430 ft |
| NID Storage | 246 acre-ft |
| Max Storage | 246 acre-ft |
| Surface Area | 17 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Not Available |
| EAP Status | No |
| Last Inspection | April 29, 2025 |
| Inspection Frequency | 1 |
Dam Information
| Year Completed | 1890 |
| Primary Purpose | Recreation |
| Dam Type | Earth |
| Owner Type | Local Government |
| Owner | CITY OF MENDOTA |
| Other Name | Lake Mendota |
Location Map
About This Dam Record
Dam safety data is maintained by the Army Corps of Engineers National Inventory of Dams (NID). High-hazard dams are those where failure could cause loss of life or major property damage downstream.