Dewey Forebay
Dewey Forebay is a timber crib dam located in Municipality of Skagway, Alaska, built in 1905. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Dewey Forebay
The primary purpose of Dewey Forebay 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 Alaska Power And Telephone Company (private). It impounds the Dewey Creek near Skagway.
The dam stands 30 feet tall and stretches 132 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 35 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1905, the structure is over a century old.
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. The most recent inspection on record was 06/05/2019.
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Location
| State | Alaska |
| County | Municipality of Skagway |
| Nearest City | Skagway |
| River/Stream | Dewey Creek |
| Coordinates | 59.45058, -135.31011 |
Physical Characteristics
| Dam Type | Timber Crib |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 132 ft |
| Year Completed | 1905 (121 years old) |
Storage & Hydraulics
| NID Storage | 35 acre-ft |
| Max Storage | 35 acre-ft |
| Normal Storage | 35 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 197 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Alaska Power and Telephone Company |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/05/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | AK00059 |
| Federal ID | AK00059 |
| More Info | State Dam Safety Program |