Combined Locks
Combined Locks is a gravity dam located in Outagamie County, Wisconsin, built in 1912. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Combined Locks
The primary purpose of Combined Locks is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Kaukauna, City Of (local government). It impounds the Fox River near Kaukauna.
The dam stands 28 feet tall and stretches 653 feet across, creates a reservoir covering 180 acres, has a maximum storage capacity of 1,700 acre-feet, and collects water from a drainage area of 6,000 square miles. Completed in 1912, the structure is over a century old.
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. 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 09/13/2022.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Wisconsin |
| County | Outagamie |
| Nearest City | Kaukauna |
| River/Stream | Fox River |
| Coordinates | 44.27340, -88.30050 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 28 ft |
| Dam Height | 23 ft |
| Dam Length | 653 ft |
| Year Completed | 1912 (114 years old) |
Storage & Hydraulics
| NID Storage | 1,700 acre-ft |
| Max Storage | 1,700 acre-ft |
| Normal Storage | 1,600 acre-ft |
| Surface Area | 180 acres |
| Drainage Area | 6,000 sq mi |
| Max Discharge | 20,800 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Kaukauna, City of |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/13/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WI00777 |
| Federal ID | WI00777 |
| More Info | State Dam Safety Program |