Twenty One Guns Campground Lake Dam is an earth dam located in Clark County, Illinois, built in 1957. It carries a Significant hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 410 ft long, taller than 68% 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 Twenty One Guns Campground Lake Dam
The primary purpose of Twenty One Guns Campground Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by George M. Stoutin (private). It impounds the Trib Embarass River near Martinsville.
The dam stands 30 feet tall and stretches 410 feet across, and has a maximum storage capacity of 246 acre-feet. Completed in 1957, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. The most recent inspection on record was 06/28/2023.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Illinois |
| County | Clark |
| Nearest City | Martinsville |
| River/Stream | Trib Embarass River |
| Coordinates | 39.34495, -87.90904 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 410 ft |
| Year Completed | 1957 (69 years old) |
Storage & Hydraulics
| NID Storage | 246 acre-ft |
| Max Storage | 246 acre-ft |
| Normal Storage | 166 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | George M. Stoutin |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 06/28/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00685 |
| Federal ID | IL00685 |
| More Info | State Dam Safety Program |