New Thompson Lake Dam
New Thompson Lake Dam is an earth dam located in Jackson County, Illinois, built in 1957. It carries a Low hazard potential classification.
About New Thompson Lake Dam
The primary purpose of New Thompson Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Thompson Lake Fishing Club (private). It impounds the Trib Big Muddy River-offstream near Murphysboro.
The dam stands 16 feet tall and stretches 390 feet across, and has a maximum storage capacity of 116 acre-feet. Completed in 1957, the structure is well into its service life at over 50 years old.
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 09/29/2023.
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Location
| State | Illinois |
| County | Jackson |
| Nearest City | Murphysboro |
| River/Stream | Trib Big Muddy River-offstream |
| Coordinates | 37.74503, -89.25654 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 390 ft |
| Year Completed | 1957 (69 years old) |
Storage & Hydraulics
| NID Storage | 116 acre-ft |
| Max Storage | 116 acre-ft |
| Normal Storage | 86 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | THOMPSON LAKE FISHING CLUB |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 09/29/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL01024 |
| Federal ID | IL01024 |
| More Info | State Dam Safety Program |