Prospect Forebay Dam
Prospect Forebay Dam is an earth dam located in Jackson County, Oregon, built in 1911. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Prospect Forebay Dam
The primary purpose of Prospect Forebay Dam 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 Pacificorp (private). It impounds the North Fork, Rogue River.
The dam stands 31 feet tall and stretches 1,040 feet across, creates a reservoir covering 3 acres, has a storage capacity of 30 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1911, 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 05/23/2024.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Oregon |
| County | Jackson |
| Nearest City | None |
| River/Stream | North Fork, Rogue River |
| Coordinates | 42.74175, -122.51411 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 31 ft |
| Dam Height | 31 ft |
| Dam Length | 1,040 ft |
| Year Completed | 1911 (115 years old) |
Storage & Hydraulics
| NID Storage | 30 acre-ft |
| Normal Storage | 30 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,080 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | PacifiCorp |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/23/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OR04092 |
| Federal ID | OR04092 |
| More Info | State Dam Safety Program |