Upper Baker Dam is a dam spanning the Baker River in northern Washington in the United States of America. It is one of two dams on the river, the other one being the Lower Baker Dam a few miles downstream. The dam is used to generate hydroelectricity and provide flood control.[2]

Upper Baker Dam
CountryUnited States
LocationWhatcom County, Washington
Coordinates48°38′56″N 121°41′27″W / 48.64889°N 121.69083°W / 48.64889; -121.69083
StatusIn use
Opening date1959
Owner(s)Puget Sound Energy
Dam and spillways
Type of damConcrete gravity
ImpoundsBaker River
Height312 feet (95 m)
Length1,200 feet (370 m)
Spillways3
Spillway typeGate-controlled, service
Spillway capacity90,000 cubic feet per second (2,500 m3/s)
Reservoir
CreatesBaker Lake
Total capacity285,000 acre-feet (352,000,000 m3)
Catchment area215 square miles (560 km2)
Surface area4,800 acres (19 km2)
Power Station
Installed capacity91 MW
Annual generation337,350,000 KWh[1]

Construction of the dam was finished in 1959 by Puget Sound Energy as part of a power generating scheme, the Baker River Hydroelectric Project. The dam is a concrete gravity structure 312 feet (95 m) high and 1,200 feet (370 m) long, and is capable of producing 91 MW. Its reservoir stretches 9 miles (14 km) upstream and contains 285,000 acre-feet (352,000,000 m3) of water.[3]

Climate

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Upper Baker Dam has a mediterranean climate (Köppen Csb).

Climate data for Upper Baker Dam (1991–2020 normals, extremes 1965–present)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 57
(14)
68
(20)
76
(24)
92
(33)
102
(39)
110
(43)
101
(38)
98
(37)
100
(38)
84
(29)
66
(19)
60
(16)
110
(43)
Mean maximum °F (°C) 46.6
(8.1)
53.2
(11.8)
65.1
(18.4)
75.6
(24.2)
83.4
(28.6)
85.4
(29.7)
90.7
(32.6)
90.4
(32.4)
84.9
(29.4)
71.5
(21.9)
54.2
(12.3)
46.5
(8.1)
93.8
(34.3)
Mean daily maximum °F (°C) 37.9
(3.3)
42.4
(5.8)
47.9
(8.8)
55.8
(13.2)
63.7
(17.6)
67.5
(19.7)
74.4
(23.6)
75.3
(24.1)
68.6
(20.3)
55.7
(13.2)
43.8
(6.6)
37.3
(2.9)
55.9
(13.3)
Daily mean °F (°C) 33.4
(0.8)
35.8
(2.1)
39.9
(4.4)
45.8
(7.7)
52.8
(11.6)
57.2
(14.0)
62.6
(17.0)
63.3
(17.4)
57.9
(14.4)
48.2
(9.0)
39.0
(3.9)
33.6
(0.9)
47.5
(8.6)
Mean daily minimum °F (°C) 28.9
(−1.7)
29.1
(−1.6)
31.8
(−0.1)
35.8
(2.1)
41.9
(5.5)
46.9
(8.3)
50.9
(10.5)
51.3
(10.7)
47.3
(8.5)
40.6
(4.8)
34.2
(1.2)
29.8
(−1.2)
39.0
(3.9)
Mean minimum °F (°C) 18.1
(−7.7)
20.7
(−6.3)
24.7
(−4.1)
29.5
(−1.4)
34.2
(1.2)
40.0
(4.4)
45.1
(7.3)
45.0
(7.2)
39.8
(4.3)
30.8
(−0.7)
24.6
(−4.1)
19.6
(−6.9)
13.3
(−10.4)
Record low °F (°C) 0
(−18)
4
(−16)
10
(−12)
24
(−4)
28
(−2)
35
(2)
39
(4)
39
(4)
30
(−1)
22
(−6)
5
(−15)
−2
(−19)
−2
(−19)
Average precipitation inches (mm) 15.31
(389)
8.80
(224)
10.42
(265)
6.70
(170)
4.52
(115)
3.32
(84)
1.78
(45)
1.92
(49)
4.83
(123)
10.52
(267)
15.97
(406)
14.15
(359)
98.24
(2,496)
Average snowfall inches (cm) 13.1
(33)
10.6
(27)
3.4
(8.6)
0.2
(0.51)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
2.2
(5.6)
12.9
(33)
42.4
(107.71)
Average extreme snow depth inches (cm) 11.7
(30)
8.7
(22)
5.6
(14)
0.2
(0.51)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
2.4
(6.1)
9.6
(24)
17.3
(44)
Average precipitation days (≥ 0.01 in) 20.8 17.2 20.5 17.8 14.2 13.6 7.0 6.5 11.2 17.4 21.3 20.9 188.4
Average snowy days (≥ 0.1 in) 4.1 3.1 2.4 0.2 0.1 0.0 0.0 0.0 0.0 0.0 1.2 5.5 16.6
Source 1: NOAA[4]
Source 2: National Weather Service[5]

References

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  1. ^ "Carbon Monitoring for Action".
  2. ^ "Baker River Hydroelectric Project" (PDF). Puget Sound Energy. October 2007. Archived from the original (PDF) on 2011-01-04. Retrieved 2011-01-17.
  3. ^ "3.3 Water Quantity" (PDF). Baker River Project, FERC No. 2150. Puget Sound Energy. March 2002. Retrieved 2011-01-18.[permanent dead link]
  4. ^ "U.S. Climate Normals Quick Access – Station: Upper Baker Dam, WA". National Oceanic and Atmospheric Administration. Retrieved December 29, 2022.
  5. ^ "NOAA Online Weather Data – NWS Seattle". National Weather Service. Retrieved December 29, 2022.