Holiday Lake Dam
High HazardNot Available ConditionEmergency Action Plan: Yes
Location
| State | Illinois |
| County | LaSalle |
| Nearest City | SHERIDAN |
| River/Stream | SOMONAUK CREEK |
| Coordinates | 41.60511, -88.67901 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 41 ft |
| Dam Height | 41 ft |
| Dam Length | 1,110 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 10,159 acre-ft |
| Max Storage | 10,159 acre-ft |
| Normal Storage | 2,223 acre-ft |
| Surface Area | 295 acres |
| Drainage Area | 64 sq mi |
| Max Discharge | 30,580 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | LAKE HOLIDAY PROPERTY OWNERS ASSOCIATION |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 10/24/2025 |
| Emergency Action Plan | Yes |