Courtoise Lane Dam is an earth dam located in Macoupin County, Illinois. It carries a Low hazard potential classification.
Dam profile
NID height · 34 ft34 ft tall and 300 ft long, taller than 78% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Courtoise Lane Dam
The primary purpose of Courtoise Lane Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Don & Mary Ann Raymond (private). It impounds the Trib Girder Branch near Bethalto.
The dam stands 34 feet tall and stretches 300 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 121 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 06/11/2024.
At 34 feet, this dam is taller than 78% of dams nationwide.
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Location
| State | Illinois |
| County | Macoupin |
| Nearest City | Bethalto |
| River/Stream | Trib Girder Branch |
| Coordinates | 39.07339, -90.05544 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 34 ft |
| Dam Length | 300 ft |
Storage & Hydraulics
| NID Storage | 121 acre-ft |
| Max Storage | 121 acre-ft |
| Normal Storage | 66 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 25 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Don & Mary Ann Raymond |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 06/11/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL50591 |
| Federal ID | IL50591 |
| More Info | State Dam Safety Program |