Dunlap Lake Dam
High HazardNot Available ConditionEmergency Action Plan: Yes
Location
| State | Illinois |
| County | Madison |
| Nearest City | EDWARDSVILLE |
| River/Stream | MOONEY CREEK |
| Coordinates | 38.80774, -89.93863 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 45 ft |
| Dam Height | 45 ft |
| Dam Length | 840 ft |
| Year Completed | 1941 (85 years old) |
Storage & Hydraulics
| NID Storage | 5,660 acre-ft |
| Max Storage | 5,660 acre-ft |
| Normal Storage | 3,010 acre-ft |
| Surface Area | 205 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 13,443 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | DUNLAP LAKE PROPERTY OWNERS ASSOCIATION |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 09/12/2025 |
| Emergency Action Plan | Yes |