Lower Dewey
Lower Dewey 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 Lower Dewey
The primary purpose of Lower Dewey 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.
The dam stands 28 feet tall and stretches 602 feet across, creates a reservoir covering 30 acres, has a maximum storage capacity of 650 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.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Alaska |
| County | Municipality of Skagway |
| Nearest City | None |
| River/Stream | Dewey Creek |
| Coordinates | 59.44106, -135.31638 |
Physical Characteristics
| Dam Type | Timber Crib |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 602 ft |
| Year Completed | 1905 (121 years old) |
Storage & Hydraulics
| NID Storage | 650 acre-ft |
| Max Storage | 650 acre-ft |
| Normal Storage | 250 acre-ft |
| Surface Area | 30 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 220 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 | AK00009 |
| Federal ID | AK00009 |
| More Info | State Dam Safety Program |