Alkali Lake (Oregon)

Alkali Lake
Alkali Lake dry lakebed and surrounding desert
Alkali Lake
LocationLake County, Oregon
Coordinates42°58′38″N 120°01′41″W / 42.97722°N 120.02806°W / 42.97722; -120.02806
Lake typeseasonal, alkali
Basin countriesUnited States
Surface elevation4,332 ft (1,320 m)

Alkali Lake is a geographic sink located in Lake County, Oregon, United States. It lies within the Alkali Subbasin of the Summer Lake Basin watershed in southeastern Oregon.[1] The lake is situated 26 miles east of Christmas Valley, Oregon, northeast of Lake Abert,[2] and directly west of Abert Rim and Highway 395.

Alkali Lake is believed to have reached a prehistoric maximum depth of 270.7 feet (82.5 meters) and covered about 1,448.4 square miles (3,751 square kilometers). Since then, its water level has fluctuated, with a general trend towards drying.[1] Notable features include dissolved alkaline salts averaging 10% of total brine weight in its seasonal waters[2] and a nearby chemical disaster, Alkali Lake Chemical Waste Dump.

Plants

Plants known to occur in the dunes immediately north of the lake include:[3]

Climate

According to the Köppen Climate Classification system, Alkali Lake has a steppe climate, abbreviated "BSk" on climate maps.

Climate data for Alkali Lake (1991–2020 normals, extremes 1961–present)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 66
(19)
72
(22)
78
(26)
88
(31)
97
(36)
100
(38)
108
(42)
105
(41)
101
(38)
90
(32)
75
(24)
69
(21)
108
(42)
Mean daily maximum °F (°C) 42.9
(6.1)
45.4
(7.4)
51.6
(10.9)
58.3
(14.6)
66.8
(19.3)
75.8
(24.3)
88.1
(31.2)
86.8
(30.4)
77.1
(25.1)
63.3
(17.4)
49.7
(9.8)
41.3
(5.2)
62.3
(16.8)
Daily mean °F (°C) 31.5
(−0.3)
33.1
(0.6)
38.2
(3.4)
42.8
(6.0)
51.4
(10.8)
58.3
(14.6)
67.8
(19.9)
66.8
(19.3)
57.7
(14.3)
46.1
(7.8)
36.2
(2.3)
30.1
(−1.1)
46.7
(8.2)
Mean daily minimum °F (°C) 20.0
(−6.7)
20.9
(−6.2)
24.8
(−4.0)
27.4
(−2.6)
36.1
(2.3)
40.9
(4.9)
47.5
(8.6)
46.8
(8.2)
38.3
(3.5)
28.5
(−1.9)
22.6
(−5.2)
19.0
(−7.2)
31.1
(−0.5)
Record low °F (°C) −38
(−39)
−26
(−32)
−11
(−24)
6
(−14)
4
(−16)
23
(−5)
30
(−1)
28
(−2)
14
(−10)
−2
(−19)
−22
(−30)
−33
(−36)
−38
(−39)
Average precipitation inches (mm) 1.25
(32)
1.00
(25)
1.06
(27)
1.13
(29)
1.57
(40)
0.97
(25)
0.41
(10)
0.35
(8.9)
0.50
(13)
0.93
(24)
0.85
(22)
1.27
(32)
11.29
(287)
Source: NOAA[4][5]

See also

References

  1. ^ a b US Fish & Wildlife Service website
  2. ^ a b McArthur, p. 10
  3. ^ "Alkali Lake: 6/24/2003".
  4. ^ "NOWData - NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Retrieved December 11, 2025.
  5. ^ "Summary of Monthly Normals 1991-2020". National Oceanic and Atmospheric Administration. Retrieved December 11, 2025.

Works cited