Williamsville Lake Dam 1
Williamsville Lake Dam 1 is an earth dam located in Sangamon County, Illinois, built in 1971. It carries a Low hazard potential classification.
About Williamsville Lake Dam 1
Williamsville Lake Dam 1 is a dam in Sangamon, Illinois. The dam is owned by City Of Williamsville;city Of Williamsville (local government). It impounds the Wolf Creek near Petersburg.
The dam stands 23 feet tall and stretches 600 feet across, creates a reservoir covering 18 acres, has a maximum storage capacity of 180 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1971, 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 08/27/2020.
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Location
| State | Illinois |
| County | Sangamon |
| Nearest City | Petersburg |
| River/Stream | Wolf Creek |
| Coordinates | 39.95042, -89.52980 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Height | 23 ft |
| Dam Length | 600 ft |
| Year Completed | 1971 (55 years old) |
Storage & Hydraulics
| NID Storage | 180 acre-ft |
| Max Storage | 180 acre-ft |
| Normal Storage | 108 acre-ft |
| Surface Area | 18 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 165 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | CITY OF WILLIAMSVILLE;CITY OF WILLIAMSVILLE |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 08/27/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IL40141 |
| Federal ID | IL40141 |
| More Info | State Dam Safety Program |