Diablo Dam
| Diablo Dam | |
|---|---|
 | |
| Location | Washington, United States |
| Opening date | 1930 |
| Dam and spillways | |
| Type of dam | Concrete arch-gravity[1] |
| Impounds | Skagit River |
| Height | 389 ft (119 m)[1] |
| Length | 1,180 ft (360 m)[1] |
| Reservoir | |
| Total capacity | 88,500 acre·ft (109,200,000 m3)[1] |
| Catchment area | 1,103 sq mi (2,860 km2)[1] |
| Surface area | 990 acres (400 ha)[1] |
| Power station | |
| Commission date | 1936 |
| Turbines | 2x 64.5 MW[2] |
| Installed capacity | 129 MW[2] |
| Annual generation | 689,400,000 KWh[3] |
Diablo Dam is one of three dams along the upper Skagit River in Whatcom County, Washington and part of the Skagit River Hydroelectric Project that supplies Seattle with a large proportion of its power needs. Work was begun in 1917 on a six-mile tunnel through Diablo Canyon and subsequent construction of a powerhouse. Work crews had to overcome extreme weather and mountain conditions, while Seattle City Light officials had to deal with politics and diplomacy. The dam was completed in 1930, and began generating electricity in 1936.[4]
The result was a power-generating dam that holds a reservoir known as Diablo Lake. At the time it was completed, Diablo Dam, at 389 feet, was the tallest dam in the world.[5] Water from the dam operates two main generators, each with a capacity of 64.5 MW.[2]
The dam was one of the places to help inspire a location in the video game Alan Wake.
Coordinates: 48°42′51″N 121°07′52″W / 48.7143°N 121.1312°W
Climate
| Climate data for Diablo Dam, Washinton | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °F (°C) | 62 (17) |
63 (17) |
76 (24) |
90 (32) |
103 (39) |
101 (38) |
106 (41) |
106 (41) |
101 (38) |
87 (31) |
65 (18) |
59 (15) |
106 (41) |
| Average high °F (°C) | 37.3 (2.9) |
42.6 (5.9) |
48.8 (9.3) |
57.1 (13.9) |
65.3 (18.5) |
70.5 (21.4) |
77.5 (25.3) |
77.6 (25.3) |
70.8 (21.6) |
57.8 (14.3) |
44.8 (7.1) |
38.4 (3.6) |
57.37 (14.09) |
| Average low °F (°C) | 27.3 (−2.6) |
29.6 (−1.3) |
32.4 (0.2) |
36.9 (2.7) |
42.8 (6) |
48.2 (9) |
51.9 (11.1) |
52.5 (11.4) |
47.8 (8.8) |
41.0 (5) |
34.0 (1.1) |
29.8 (−1.2) |
39.52 (4.18) |
| Record low °F (°C) | −8 (−22) |
0 (−18) |
9 (−13) |
24 (−4) |
28 (−2) |
33 (1) |
38 (3) |
37 (3) |
31 (−1) |
18 (−8) |
5 (−15) |
−2 (−19) |
−8 (−22) |
| Average precipitation inches (mm) | 11.47 (291.3) |
8.09 (205.5) |
7.12 (180.8) |
4.59 (116.6) |
2.84 (72.1) |
2.26 (57.4) |
1.41 (35.8) |
1.46 (37.1) |
3.45 (87.6) |
8.05 (204.5) |
11.88 (301.8) |
12.46 (316.5) |
75.08 (1,907) |
| Average snowfall inches (cm) | 21.2 (53.8) |
12.1 (30.7) |
7.0 (17.8) |
0.3 (0.8) |
0.0 (0) |
0.0 (0) |
0.0 (0) |
0.0 (0) |
0.0 (0) |
0.1 (0.3) |
3.8 (9.7) |
16.1 (40.9) |
60.6 (154) |
| Source: [6] | |||||||||||||
Panorama
See also
References
 |
Wikimedia Commons has media related to Diablo Dam. |
- 1 2 3 4 5 6 http://ce-npdp-serv2.stanford.edu/DamDirectory/DamDetail.jsp?npdp_id=WA00170
- 1 2 3 "City Light Projects Harness Powerful Skagit River After Long, Hard Struggle" (PDF). Retrieved 2009-09-05.
- ↑ http://carma.org/plant/detail/10751
- ↑ "Power Generation: Skagit Project - Diablo Dam". City of Seattle. Retrieved 6 January 2011. Includes construction photos.
- ↑ "Washington State Tourism Diablo Dam/Lake". Retrieved 2009-09-05.
- ↑ "DIABLO DAM, WASHINGTON (452157)". Western Regional Climate Center. Retrieved June 1, 2016.