Gvillo Pond Dam is an earth dam located in Madison County, Illinois, built in 1970. It carries a Low hazard potential classification.
Dam profile
NID height · 36 ft36 ft tall and 390 ft long, taller than 82% 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 Gvillo Pond Dam
The primary purpose of Gvillo Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Richard Gvillo (private). It impounds the Trib East Fork-offstream near Forrest Homes.
The dam stands 36 feet tall and stretches 390 feet across, and has a maximum storage capacity of 44 acre-feet. Completed in 1970, 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 04/07/2023.
At 36 feet, this dam is taller than 82% of dams nationwide.
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Location
| State | Illinois |
| County | Madison |
| Nearest City | Forrest Homes |
| River/Stream | Trib East Fork-offstream |
| Coordinates | 38.98644, -90.05917 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 36 ft |
| Dam Height | 36 ft |
| Dam Length | 390 ft |
| Year Completed | 1970 (56 years old) |
Storage & Hydraulics
| NID Storage | 44 acre-ft |
| Max Storage | 44 acre-ft |
| Normal Storage | 32 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Richard Gvillo |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 04/07/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL01039 |
| Federal ID | IL01039 |
| More Info | State Dam Safety Program |