Callahan Lake is a gravity dam located in Sawyer County, Wisconsin, built in 1938. It carries a Low hazard potential classification.
Dam profile
NID height · 15 ft15 ft tall and 225 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Callahan Lake
The primary purpose of Callahan Lake is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Jenkins, Ruby (private). It impounds the North Fork Chief River.
The dam stands 15 feet tall and stretches 225 feet across, creates a reservoir covering 602 acres, has a maximum storage capacity of 6,300 acre-feet, and collects water from a drainage area of 22 square miles. Completed in 1938, 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 06/02/2022.
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Location
| State | Wisconsin |
| County | Sawyer |
| Nearest City | None |
| River/Stream | North Fork Chief River |
| Coordinates | 45.99200, -91.22654 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 225 ft |
| Year Completed | 1938 (88 years old) |
Storage & Hydraulics
| NID Storage | 6,300 acre-ft |
| Max Storage | 6,300 acre-ft |
| Normal Storage | 3,400 acre-ft |
| Surface Area | 602 acres |
| Drainage Area | 22 sq mi |
| Max Discharge | 600 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Jenkins, Ruby |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 06/02/2022 |
| Emergency Action Plan | No |
Identifiers
| NID ID | WI00308 |
| Federal ID | WI00308 |
| More Info | State Dam Safety Program |