Libbys Lagoon 4 Dam is an earth dam located in Tazewell County, Illinois, built in 1974. It carries a Low hazard potential classification.
Dam profile
NID height · 28 ft28 ft tall and 1,930 ft long, taller than 62% 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 Libbys Lagoon 4 Dam
Libbys Lagoon 4 Dam is a dam in Tazewell, Illinois. The dam is owned by Libby, Mcneil, Libby Company (private). It impounds the Trib Bull Run Creek-offstream near Morton.
The dam stands 28 feet tall and stretches 1,930 feet across, and has a maximum storage capacity of 94 acre-feet. Completed in 1974, 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 10/14/2020.
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Location
| State | Illinois |
| County | Tazewell |
| Nearest City | Morton |
| River/Stream | Trib Bull Run Creek-offstream |
| Coordinates | 40.63734, -89.42411 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 1,930 ft |
| Year Completed | 1974 (52 years old) |
Storage & Hydraulics
| NID Storage | 94 acre-ft |
| Max Storage | 94 acre-ft |
| Normal Storage | 20 acre-ft |
| Spillway Type | None |
Ownership & Safety
| Purpose | Other |
| Owner | Libby, Mcneil, Libby Company |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 10/14/2020 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00324 |
| Federal ID | IL00324 |
| More Info | State Dam Safety Program |