Tampier Lake Dam
Significant HazardNot Available ConditionEmergency Action Plan: No
Location
| State | Illinois |
| County | Cook |
| Nearest City | LEMONT-OFFSTREAM |
| River/Stream | TRIB LONG RUN CREEK |
| Coordinates | 41.64588, -87.90774 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 9 ft |
| Dam Height | 9 ft |
| Dam Length | 240 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 859 acre-ft |
| Max Storage | 859 acre-ft |
| Normal Storage | 668 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | FOREST PRESERVE DISTRICT OF COOK COUNTY |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Not Available |
| Last Inspection | 12/22/2025 |
| Emergency Action Plan | No |