National Petroleum Chemical Plant Lake Dam
Significant HazardNot Available ConditionEmergency Action Plan: No
Location
| State | Illinois |
| County | Douglas |
| Nearest City | STAUNTON-OFFSTREAM |
| River/Stream | KASKASKIA RIVER-OFFSTREAM |
| Coordinates | 39.80111, -88.36342 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 2,500 ft |
| Year Completed | 1952 (74 years old) |
Storage & Hydraulics
| NID Storage | 367 acre-ft |
| Max Storage | 367 acre-ft |
| Normal Storage | 350 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | U. S. INDUSTRIAL CHEMICAL COMPANY |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not Available |
| Last Inspection | 06/11/2025 |
| Emergency Action Plan | No |