Angeline Lake

Angeline Lake is a freshwater lake located on the northern slope of Iron Cap Mountain between Otter Lake, Azure Lake and Big Heart Lake, in King County, Washington.[4] Self-issued Alpine Lake Wilderness permit required for transit within the Big Snow Mountain area.[5] West Fork Foss River exits Angeline Lake into a canyon that produces Angeline Falls downstream from Chetwoot Lake to Delta Lake. Because Angeline Lake is at the heart of the Alpine Lakes Wilderness, the lake is a popular area for hiking, swimming, and fishing golden trout, rainbow trout, and cutthroat trout.[2]

Angeline Lake
Location of Angeline Lake in Washington, USA.
Location of Angeline Lake in Washington, USA.
Angeline Lake
Location of Angeline Lake in Washington, USA.
Location of Angeline Lake in Washington, USA.
Angeline Lake
LocationKing County, Washington, United States
Coordinates47.5707636°N 121.3071410°W / 47.5707636; -121.3071410
Primary outflowsWest Fork Foss River[1]
Basin countriesUnited States
Surface area183.7 acres (0.743 km2)[2]
Surface elevation4,613 ft (1,406 m)[3]

Outlet

Angeline Lake has a low watershed to surface area ratio with low flushing rates.[6][7] The lake has a subterranean outlet.[8] The top land of the outlet channel is blocked by a large landslide. As a consequence, the water exiting the lake percolates in through the landslide and emerges about 1,000 feet downstream from the lake. At this surfacing point, the stream cascades steeply down the hillside over cliffs that line the south side of the Delta Lake basin, forming Angeline Falls, spreading out to 80-100 feet in width and pitching down nearly vertically 424 feet to the talus slopes below.[9] After the pool of the waterfall, the creek cascades for a short distance before again being absorbed into the rocky slope and receding entirely underground again, emerging approximately 600 vertical feet further down at the south end of Delta Lake.

Geography

Angeline Lake is nestled in a long structural benchland with relatively level or gently inclined land bounded by the distinctly steeper slopes of Atrium Peak above and between Angeline and Big Heart Lake.[10] The lake is located in a prominent valley along the western skirt of the Mount Daniel area in connection with the North-Middle Forks Snoqualmie mountain grouping area.[11] The valley follows patterns of geomorphology typical of the Northern Cascade Mountains of the Pacific Mountain System with a bedrock composed of pyrrhotite and pyrite found in thin seams 804 metres (2,638 ft) wide at a depth of 304 metres (997 ft) below the surface.[12] The host rock in this area is greensand from the Lopingian epoch 260 to 250 million years ago.

Climate

Angeline lake is within a hemiboreal climate.[13] The average temperature is 0°C. The warmest month is August, with an average temperature of 13°C, and the coldest month is January, at an average of −10 °C.[14] The average rainfall is 1,989 millimeters per year. The wettest month is January, with 248 millimeters of rain, and the least in August, with 41 millimeters of rain.[15]

Angeline Lake
Climate chart (explanation)
J
F
M
A
M
J
J
A
S
O
N
D
 
 
248
 
 
−2
−9
 
 
182
 
 
−2
−10
 
 
192
 
 
0
−8
 
 
122
 
 
4
−4
 
 
115
 
 
11
0
 
 
98
 
 
14
3
 
 
45
 
 
20
5
 
 
41
 
 
21
6
 
 
87
 
 
16
4
 
 
160
 
 
8
−1
 
 
246
 
 
1
−5
 
 
207
 
 
−3
−10
█ Average max. and min. temperatures in °C
█ Precipitation totals in mm
Source: [15]
Imperial conversion
JFMAMJJASOND
 
 
9.8
 
 
28
16
 
 
7.2
 
 
28
14
 
 
7.6
 
 
32
18
 
 
4.8
 
 
39
25
 
 
4.5
 
 
52
32
 
 
3.9
 
 
57
37
 
 
1.8
 
 
68
41
 
 
1.6
 
 
70
43
 
 
3.4
 
 
61
39
 
 
6.3
 
 
46
30
 
 
9.7
 
 
34
23
 
 
8.1
 
 
27
14
█ Average max. and min. temperatures in °F
█ Precipitation totals in inches

Access

Access to Angeline Lake is through West Fork Foss Lakes Trail #1064 off Forest Service road 6835 a side road of Foss River Road (Forest Service Road #68), which exits U.S. Highway 2. The trail borders Trout Lake, Lake Malachite, Copper Lake and Little Heart Lake before ending on campsites along Atrium Peak, the ridge between Big Heart Lake and Angeline Lake to the East.[16] The output of Big Heart Lake is approximately a mile from the output of Angeline Lake.[17] Self-issued Alpine Lake Wilderness permit required for transit within the Necklace Valley area.[18]

See also

References
  1. Mineral and Water Resources of Washington: Report. Washington Geological Survey (1911-1921). p. 424.
  2. "Angline". Washington Department of Fish and Wildlife. Retrieved 23 March 2021.
  4. Bulletin, Volume 17. Washington Geological Survey (1911-1921). p. 64.
  5. "Necklace Valley Trail 1062". United States Department of Agriculture. Retrieved 23 March 2021.
  6. Welch, E. B., Chamberlain, W. H., & Spyridakis, D. E. (1984). Chemical content of snow and effect of melting on Cascade mountain lakes Northwest Sci.;(United States), 58(2).
  7. Chamberlain, W. H., Welch, E. B., & Spyridakis, D. E. (1984). Chemical Content of Snow and Effect of Melting on Cascade Mountain Lakes.
  8. "Angeline Falls - King County, Washington". Northwest Waterfall Survey. Retrieved 23 March 2021.
  9. Goldman, Peggy (2014). Washington Scrambles: Best Nontechnical Ascents. Mountaineers Books. p. Section 37. ISBN 9781594858413.
  10. Volken, Martin (2014). Backcountry Ski & Snowboard Routes Washington. Mountaineers Books. ISBN 9781594856570.
  11. Mount Daniel Area at Peakbagger.com.
  12. "Iron Cap Prospect". Diggings. Retrieved 23 March 2021.
  13. Peel, M C; Finlayson, B L. "Updated world map of the Köppen-Geiger climate classification". Hydrology and Earth System Sciences. 11: 1639–1640. doi:10.5194/hess-11-1633-2007. Retrieved 19 March 2021.
  14. "NASA Earth Observations Data Set Index". NASA. Archived from the original on 6 August 2013. Retrieved 19 March 2021.
  15. "Azure Lake, Washington Climate Averages". WeatherWX. Retrieved 30 March 2021.
  16. "Atrium Peak, Washington". PeakBagger.com. Retrieved 23 March 2021.
  17. Spring, Vicky and Ira. 100 Hikes in the Alpine Lakes. WaMountaineers. p. 1985. ISBN 9780898861082.
  18. "West Fork Foss Lakes Trail 1064". United States Department of Agriculture. Retrieved 23 March 2021.
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