Skwentna River
The Skwentna River[3] (Dena'ina: Shqitnu) is a river in the southwestern part of Matanuska-Susitna Borough, Alaska.
| Skwentna River | |
|---|---|
Location of the mouth of the Skwentna River in Alaska | |
| Native name | Shqitnu (Tanaina) |
| Location | |
| Country | United States |
| State | Alaska |
| Borough | Matanuska-Susitna |
| Physical characteristics | |
| Source | |
| • coordinates | 61°25′57″N 152°40′47″W[1] South Twin Glacier |
| • elevation | 3,500 ft (1,100 m)[2] |
| Mouth | |
• coordinates | 61°59′8″N 151°8′23″W[1] Yentna River |
• elevation | 125 ft (38 m)[1] |
| Length | 100 mi (160 km)[1] |
History
Tanaina Indian name reported in 1898 by Spurr (1900,p. 48), USGS, as "Skwent River."[1]
Watershed
Heads at South Twin Glacier at 61°26′00″N 152°41′00″W, flows North and East to Yentna River, 63 miles (101 km) North of Tyonek, Alaska Cook Inlet Low.[1]
Tributaries
Climate
Puntilla Lake, 1858 ft (566 m), is a weather station located near the source of the Skwentna River, approximately 50 miles west of Skwentna.[4] Puntilla has a subarctic climate (Köppen Dfc).
| Climate data for Puntilla, Alaska, 1991–2020 normals, 1942–2020 extremes: 1858ft (566m) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °F (°C) | 49 (9) |
47 (8) |
52 (11) |
62 (17) |
80 (27) |
87 (31) |
85 (29) |
83 (28) |
73 (23) |
61 (16) |
52 (11) |
45 (7) |
87 (31) |
| Mean maximum °F (°C) | 32.2 (0.1) |
35.6 (2.0) |
39.0 (3.9) |
49.6 (9.8) |
66.1 (18.9) |
75.0 (23.9) |
76.7 (24.8) |
70.9 (21.6) |
61.4 (16.3) |
49.4 (9.7) |
35.4 (1.9) |
31.1 (−0.5) |
78.4 (25.8) |
| Mean daily maximum °F (°C) | 12.0 (−11.1) |
21.7 (−5.7) |
26.9 (−2.8) |
39.5 (4.2) |
52.5 (11.4) |
61.6 (16.4) |
64.4 (18.0) |
60.4 (15.8) |
50.2 (10.1) |
35.2 (1.8) |
20.8 (−6.2) |
14.4 (−9.8) |
38.3 (3.5) |
| Daily mean °F (°C) | 5.9 (−14.5) |
13.5 (−10.3) |
16.7 (−8.5) |
29.7 (−1.3) |
42.5 (5.8) |
51.6 (10.9) |
55.7 (13.2) |
52.2 (11.2) |
43.1 (6.2) |
28.4 (−2.0) |
14.2 (−9.9) |
8.0 (−13.3) |
30.1 (−1.0) |
| Mean daily minimum °F (°C) | −0.1 (−17.8) |
5.3 (−14.8) |
6.4 (−14.2) |
19.9 (−6.7) |
32.4 (0.2) |
41.7 (5.4) |
47.0 (8.3) |
44.0 (6.7) |
35.9 (2.2) |
21.5 (−5.8) |
7.5 (−13.6) |
1.6 (−16.9) |
21.9 (−5.6) |
| Mean minimum °F (°C) | −28.6 (−33.7) |
−23.1 (−30.6) |
−19.1 (−28.4) |
−5.7 (−20.9) |
18.2 (−7.7) |
28.1 (−2.2) |
35.6 (2.0) |
29.7 (−1.3) |
19.9 (−6.7) |
2.6 (−16.3) |
−14.0 (−25.6) |
−22.8 (−30.4) |
−32.3 (−35.7) |
| Record low °F (°C) | −50 (−46) |
−45 (−43) |
−40 (−40) |
−28 (−33) |
−8 (−22) |
8 (−13) |
25 (−4) |
14 (−10) |
5 (−15) |
−25 (−32) |
−36 (−38) |
−50 (−46) |
−50 (−46) |
| Average precipitation inches (mm) | 1.21 (31) |
1.07 (27) |
0.61 (15) |
0.51 (13) |
0.31 (7.9) |
1.13 (29) |
2.14 (54) |
2.14 (54) |
2.11 (54) |
1.47 (37) |
1.41 (36) |
1.75 (44) |
15.86 (401.9) |
| Average snowfall inches (cm) | 15.90 (40.4) |
15.00 (38.1) |
8.50 (21.6) |
5.30 (13.5) |
0.40 (1.0) |
0.00 (0.00) |
0.00 (0.00) |
0.00 (0.00) |
1.20 (3.0) |
8.60 (21.8) |
18.90 (48.0) |
22.50 (57.2) |
96.3 (244.6) |
| Average extreme snow depth inches (cm) | 34.2 (87) |
41.0 (104) |
37.7 (96) |
32.6 (83) |
9.8 (25) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.9 (2.3) |
5.0 (13) |
16.0 (41) |
26.9 (68) |
47.8 (121) |
| Average precipitation days (≥ 0.01 in) | 7.4 | 7.1 | 4.6 | 3.0 | 3.0 | 6.8 | 10.7 | 10.8 | 10.9 | 7.8 | 8.9 | 10.6 | 91.6 |
| Average snowy days (≥ 0.1 in) | 8.3 | 7.4 | 4.8 | 2.9 | 0.4 | 0.0 | 0.0 | 0.0 | 0.5 | 4.0 | 7.3 | 10.3 | 45.9 |
| Source 1: NOAA[5] | |||||||||||||
| Source 2: XMACIS2 (records, 1991-2020 monthly max/mins & snow)[6] | |||||||||||||
See also
References
- U.S. Geological Survey Geographic Names Information System: Skwentna River
- "Skwentna River source from USGS-GNIS". MSR Maps.
- United States Geological Survey Hydrological Unit Code:
- "Data of Meteorological Station Puntilla Lake, Alaska". geographic.org. Retrieved March 29, 2024.
- "Puntilla, Alaska 1991-2020 Monthly Normals". Retrieved March 29, 2024.
- "xmACIS". National Oceanic and Atmospheric Administration. Retrieved March 29, 2024.
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