Lake Jasper Dam
Lake Jasper Dam is an earth dam located in Jasper County, Illinois, built in 1945. It carries a Low hazard potential classification.
About Lake Jasper Dam
The primary purpose of Lake Jasper Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lake Jasper Corp. (private). It impounds the Trib Crooked Creek near St.marie.
The dam stands 18 feet tall and stretches 425 feet across, and has a maximum storage capacity of 146 acre-feet. Completed in 1945, the structure is well-established, with more than 75 years of service.
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 09/15/2022.
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Location
| State | Illinois |
| County | Jasper |
| Nearest City | St.marie |
| River/Stream | Trib Crooked Creek |
| Coordinates | 39.00831, -88.11567 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 425 ft |
| Year Completed | 1945 (81 years old) |
Storage & Hydraulics
| NID Storage | 146 acre-ft |
| Max Storage | 146 acre-ft |
| Normal Storage | 106 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | LAKE JASPER CORP. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 09/15/2022 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00660 |
| Federal ID | IL00660 |
| More Info | State Dam Safety Program |