Skwentna River
From Wikipedia the free encyclopedia
Skwentna River | |
---|---|
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 / 61.43250°N 152.67972°W[2] South Twin Glacier |
• elevation | 3,500 ft (1,100 m)[1] |
Mouth | |
• coordinates | 61°59′8″N 151°8′23″W / 61.98556°N 151.13972°W[2] Yentna River |
• elevation | 125 ft (38 m)[2] |
Length | 100 mi (160 km)[2] |
The Skwentna River[3] (Dena'ina: Shqitnu) is a river in the southwestern part of Matanuska-Susitna Borough, Alaska.
History[edit]
Tanaina Indian name reported in 1898 by Spurr (1900,p. 48), USGS, as "Skwent River."[2]
Watershed[edit]
Heads at South Twin Glacier at 61°26′00″N 152°41′00″W / 61.43333°N 152.68333°W, flows North and East to Yentna River, 63 miles (101 km) North of Tyonek, Alaska Cook Inlet Low.[2]
Tributaries[edit]
Climate[edit]
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[edit]
References[edit]
- ^ "Skwentna River source from USGS-GNIS". MSR Maps.
- ^ a b c d e f U.S. Geological Survey Geographic Names Information System: Skwentna River
- ^ 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.