Forest Wonder Lake is a gravity dam located in Iron County, Wisconsin, built in 1932. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 10 ft10 ft tall and 100 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 Forest Wonder Lake
The primary purpose of Forest Wonder Lake is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Canrica LLC - Ryan Lasee (private). It impounds the Swamp Creek.
The dam stands 10 feet tall and stretches 100 feet across, creates a reservoir covering 39 acres, has a maximum storage capacity of 270 acre-feet, and collects water from a drainage area of 17 square miles. Completed in 1932, 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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 10/17/2017.
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Location
| State | Wisconsin |
| County | Iron |
| Nearest City | None |
| River/Stream | Swamp Creek |
| Coordinates | 46.14579, -90.28860 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 100 ft |
| Year Completed | 1932 (94 years old) |
Storage & Hydraulics
| NID Storage | 270 acre-ft |
| Max Storage | 270 acre-ft |
| Normal Storage | 150 acre-ft |
| Surface Area | 39 acres |
| Drainage Area | 17 sq mi |
| Max Discharge | 557 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Canrica LLC - Ryan Lasee |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 10/17/2017 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WI00615 |
| Federal ID | WI00615 |
| More Info | State Dam Safety Program |