Gnawbone Campground Dam
Gnawbone Campground Dam is an earth dam located in Bond County, Illinois, built in 1961. It carries a Low hazard potential classification.
About Gnawbone Campground Dam
The primary purpose of Gnawbone Campground Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Randy Grizzle (private). It impounds the Trib Shoal Creek near Pocahontas.
The dam stands 27 feet tall and stretches 270 feet across, creates a reservoir covering 14 acres, has a maximum storage capacity of 162 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1961, 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 06/25/2024.
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Location
| State | Illinois |
| County | Bond |
| Nearest City | Pocahontas |
| River/Stream | Trib Shoal Creek |
| Coordinates | 38.98921, -89.55591 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Dam Length | 270 ft |
| Year Completed | 1961 (65 years old) |
Storage & Hydraulics
| NID Storage | 162 acre-ft |
| Max Storage | 162 acre-ft |
| Normal Storage | 101 acre-ft |
| Surface Area | 14 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 1,025 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | RANDY GRIZZLE |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 06/25/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00126 |
| Federal ID | IL00126 |
| More Info | State Dam Safety Program |