Smith Lake Dam is an earth dam located in Peoria County, Illinois, built in 1969. It carries a Significant hazard potential classification.
Dam profile
NID height · 47 ft47 ft tall and 625 ft long, taller than 91% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Smith Lake Dam
The primary purpose of Smith Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lake Smith Homeowners (private). It impounds the Trib Illinois River near Rome-offstream.
The dam stands 47 feet tall and stretches 625 feet across, and has a maximum storage capacity of 138 acre-feet. Completed in 1969, 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 05/15/2024.
At 47 feet, this dam is taller than 91% of dams nationwide.
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Location
| State | Illinois |
| County | Peoria |
| Nearest City | Rome-offstream |
| River/Stream | Trib Illinois River |
| Coordinates | 40.87894, -89.58358 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 47 ft |
| Dam Height | 47 ft |
| Dam Length | 625 ft |
| Year Completed | 1969 (57 years old) |
Storage & Hydraulics
| NID Storage | 138 acre-ft |
| Max Storage | 138 acre-ft |
| Normal Storage | 115 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Lake Smith Homeowners |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 05/15/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00313 |
| Federal ID | IL00313 |
| More Info | State Dam Safety Program |