Palmyra-Modesto City Lake Dam
Illinois — Macoupin County — TRIB NASSA CREEK
Location
| State | Illinois |
| County | Macoupin |
| River | TRIB NASSA CREEK |
| Coordinates | 39.44421, -89.95745 |
Physical Characteristics
| NID Height | 50 ft |
| Dam Height | 50 ft |
| Dam Length | 620 ft |
| NID Storage | 967 acre-ft |
| Max Storage | 967 acre-ft |
| Surface Area | 37 acres |
Safety Classification
| Hazard Potential | Significant |
| Condition Assessment | Not Available |
| EAP Status | Yes |
| Last Inspection | August 7, 2024 |
| Inspection Frequency | 3 |
Dam Information
| Year Completed | 1965 |
| Primary Purpose | Water Supply |
| Dam Type | Earth |
| Owner Type | Public Utility |
| Owner | PALMYRA-MODESTO WATER COMMISSION |
| Other Name | Palmyra-Modesto City Lake |
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.