Lake Iroquois is an earth dam located in Iroquois County, Illinois, built in 1969. It carries a Low hazard potential classification.
Dam profile
NID height · 16 ft16 ft tall and 730 ft long. 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 Lake Iroquois
The primary purpose of Lake Iroquois is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lake Iroquois Association (private). It impounds the Spring Creek near Loda-offstream.
The dam stands 16 feet tall and stretches 730 feet across, and has a maximum storage capacity of 760 acre-feet. Completed in 1969, 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 07/06/2022.
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Location
| State | Illinois |
| County | Iroquois |
| Nearest City | Loda-offstream |
| River/Stream | Spring Creek |
| Coordinates | 40.53814, -88.09447 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 730 ft |
| Year Completed | 1969 (57 years old) |
Storage & Hydraulics
| NID Storage | 760 acre-ft |
| Max Storage | 760 acre-ft |
| Normal Storage | 332 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Lake Iroquois Association |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 07/06/2022 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00259 |
| Federal ID | IL00259 |
| More Info | State Dam Safety Program |