Built in 1883, this historic structure stands at a height of 18 feet with a hydraulic height of 35 feet, providing a maximum storage capacity of 1300 acre-feet. The dam spans 289 feet in length and has a surface area of 215 acres, serving a drainage area of 147 square miles.
Managed by the local government and regulated by the Federal Energy Regulatory Commission, Upper Dam has a low hazard potential and a very high risk assessment rating. Despite its age, the dam has not undergone recent condition assessment, with the last inspection conducted in July 2017. The controlled spillway, with a width of 113 feet, is designed to handle a maximum discharge of 2600 cubic feet per second, ensuring the safety and stability of the structure in case of emergencies.
For water resource and climate enthusiasts, Upper Dam represents a blend of historical significance, renewable energy production, and recreational opportunities. As a vital part of the local ecosystem and infrastructure, this gravity dam continues to play a crucial role in water management and conservation efforts in Shawano County, Wisconsin.
Year Completed |
1883 |
Dam Length |
289 |
Dam Height |
18 |
River Or Stream |
Red River |
Primary Dam Type |
Gravity |
Surface Area |
215 |
Hydraulic Height |
35 |
Drainage Area |
147 |
Nid Storage |
1300 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
35 |
Red River At Morgan Road Near Morgan
|
145cfs |
Embarrass River Near Embarrass
|
259cfs |
Wolf River At Langlade
|
326cfs |
Oconto River Near Gillett
|
596cfs |
Little Wolf River At Royalton
|
-999999cfs |
Wolf River At New London
|
1050cfs |