Gridley Dam
Illinois — Cass County
Location
| State | Illinois |
| County | Cass |
| Coordinates | 39.95531, -90.07421 |
Physical Characteristics
| NID Height | 51 ft |
| Dam Height | 51 ft |
| Dam Length | 414 ft |
| NID Storage | 475 acre-ft |
| Max Storage | 475 acre-ft |
| Surface Area | 25 acres |
Safety Classification
| Hazard Potential | Low |
| Condition Assessment | Not Available |
| EAP Status | — |
| Last Inspection | — |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 1998 |
| Primary Purpose | Recreation |
| Dam Type | — |
| Owner Type | — |
| Owner | ILLINOIS DEPARTMENT OF NATURAL RESOURCES |
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.