Castle Ridge Lake Dam
High HazardNot Available ConditionEmergency Action Plan: Yes
Location
| State | Illinois |
| County | Madison |
| Nearest City | LEBANON |
| River/Stream | TRIB MILL CREEK |
| Coordinates | 38.66919, -89.87931 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 42 ft |
| Dam Height | 42 ft |
| Dam Length | 875 ft |
| Year Completed | 2002 (24 years old) |
Storage & Hydraulics
| NID Storage | 209 acre-ft |
| Max Storage | 209 acre-ft |
| Normal Storage | 143 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 962 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | CASTLE RIDGE ESTATES HOME OWNERS ASSOC. |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 09/12/2025 |
| Emergency Action Plan | Yes |