Colette Highlands Dam
Colette Highlands Dam is an earth dam located in Cook County, Illinois. It carries a Low hazard potential classification.
About Colette Highlands Dam
The primary purpose of Colette Highlands Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Village Of Orland Park (local government). It impounds the Trib Marley Creek near Orland Park.
The dam stands 10 feet tall and stretches 500 feet across, has a maximum storage capacity of 84 acre-feet, and collects water from a drainage area of 0 square miles.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 10/29/2025.
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Location
| State | Illinois |
| County | Cook |
| Nearest City | Orland Park |
| River/Stream | Trib Marley Creek |
| Coordinates | 41.60301, -87.87595 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 500 ft |
Storage & Hydraulics
| NID Storage | 84 acre-ft |
| Max Storage | 84 acre-ft |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | VILLAGE OF ORLAND PARK |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 10/29/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL55092 |
| Federal ID | IL55092 |
| More Info | State Dam Safety Program |