Monterey
Monterey is a gravity dam located in Waukesha County, Wisconsin, built in 1848. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Monterey
The primary purpose of Monterey is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Town Of Oconomowoc (local government). It impounds the Ashippun near Monterey.
The dam stands 16 feet tall and stretches 221 feet across, creates a reservoir covering 28 acres, has a maximum storage capacity of 200 acre-feet, and collects water from a drainage area of 40 square miles. Completed in 1848, the structure is one of the older dams in the region, with over a century and a half 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 08/05/2013. That was over 12 years ago.
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Location
| State | Wisconsin |
| County | Waukesha |
| Nearest City | Monterey |
| River/Stream | Ashippun |
| Coordinates | 43.17203, -88.49947 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 221 ft |
| Year Completed | 1848 (178 years old) |
Storage & Hydraulics
| NID Storage | 200 acre-ft |
| Max Storage | 200 acre-ft |
| Normal Storage | 70 acre-ft |
| Surface Area | 28 acres |
| Drainage Area | 40 sq mi |
| Max Discharge | 706 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Town of Oconomowoc |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/05/2013 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WI00221 |
| Federal ID | WI00221 |
| More Info | State Dam Safety Program |