Carthage Lake 2 Dam is an earth dam located in Hancock County, Illinois, built in 1928. It carries a Low hazard potential classification.
Dam profile
NID height · 19 ft19 ft tall and 290 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 Carthage Lake 2 Dam
The primary purpose of Carthage Lake 2 Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by City of Carthage (local government). It impounds the Trb Long Creek near Carthage-offstream.
The dam stands 19 feet tall and stretches 290 feet across, and has a maximum storage capacity of 59 acre-feet. Completed in 1928, the structure is well-established, with more than 75 years of service.
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 04/08/2024.
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Location
| State | Illinois |
| County | Hancock |
| Nearest City | Carthage-offstream |
| River/Stream | Trb Long Creek |
| Coordinates | 40.41947, -91.15861 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 19 ft |
| Dam Height | 19 ft |
| Dam Length | 290 ft |
| Year Completed | 1928 (98 years old) |
Storage & Hydraulics
| NID Storage | 59 acre-ft |
| Max Storage | 59 acre-ft |
| Normal Storage | 20 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | City of Carthage |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 04/08/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00257 |
| Federal ID | IL00257 |
| More Info | State Dam Safety Program |