Izaak Walton Lake Dam is an earth dam located in Woodford County, Illinois, built in 1971. It carries a Low hazard potential classification.
Dam profile
NID height · 33 ft33 ft tall and 505 ft long, taller than 76% 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 Izaak Walton Lake Dam
The primary purpose of Izaak Walton Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Izaak Walton League (private). It impounds the Trib Partridge Creek near Spring Bay.
The dam stands 33 feet tall and stretches 505 feet across, and has a maximum storage capacity of 170 acre-feet. 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 04/12/2024.
At 33 feet, this dam is taller than 76% of dams nationwide.
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Location
| State | Illinois |
| County | Woodford |
| Nearest City | Spring Bay |
| River/Stream | Trib Partridge Creek |
| Coordinates | 40.79494, -89.40641 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 33 ft |
| Dam Height | 33 ft |
| Dam Length | 505 ft |
| Year Completed | 1971 (55 years old) |
Storage & Hydraulics
| NID Storage | 170 acre-ft |
| Max Storage | 170 acre-ft |
| Normal Storage | 100 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Izaak Walton League |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 04/12/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00350 |
| Federal ID | IL00350 |
| More Info | State Dam Safety Program |