Pool Thirty Three is an earth dam located in Juneau County, Wisconsin, built in 1947. It carries a Significant hazard potential classification.
Dam profile
NID height · 7 ft7 ft tall and 6,050 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 Pool Thirty Three
The primary purpose of Pool Thirty Three is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by U.s. Department of the Interior (federal). It impounds the Little Yellow near Wisconsin Dells.
The dam stands 7 feet tall and stretches 6,050 feet across, creates a reservoir covering 74 acres, and has a maximum storage capacity of 2,170 acre-feet. Completed in 1947, the structure is well-established, with more than 75 years of service.
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 07/13/2007. That was over 19 years ago.
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Location
| State | Wisconsin |
| County | Juneau |
| Nearest City | Wisconsin Dells |
| River/Stream | Little Yellow |
| Coordinates | 44.14626, -90.19982 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 7 ft |
| Dam Height | 7 ft |
| Dam Length | 6,050 ft |
| Year Completed | 1947 (79 years old) |
Storage & Hydraulics
| NID Storage | 2,170 acre-ft |
| Max Storage | 2,170 acre-ft |
| Normal Storage | 900 acre-ft |
| Surface Area | 74 acres |
| Max Discharge | 3,350 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | U.s. Department of the Interior |
| Owner Type | Federal |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 07/13/2007 |
| Emergency Action Plan | No |
Identifiers
| NID ID | WI00828 |
| Federal ID | WI00828 |
| More Info | State Dam Safety Program |