Bonanza Peak (Washington)
Bonanza Peak | |
---|---|
Highest point | |
Elevation | 9,516 ft (2,900 m)[1] |
Prominence | 3,711 ft (1,131 m)[1] |
Isolation | 13.8 mi (22.2 km)[1] |
Coordinates | 48°14′18″N 120°51′59″W / 48.238217°N 120.866415°W |
Geography | |
Country | Washington |
County | Chelan |
Protected area | Glacier Peak Wilderness |
Parent range | North Cascades |
Topo map | USGS Holden |
Climbing | |
First ascent | 1937 by Curtis James and party[2] |
Bonanza Peak is a tall peak in the
Bonanza Peak is flanked with three large glaciers: Company Glacier to the north, Mary Green Glacier to the east, and Isella Glacier to the south.[6]
History
Bonanza Peak was originally named North Star Mountain, with a minor mountain to the southwest given the name Bonanza Peak. The USGS’ first topographic map of the region in 1904, however, mistakenly interchanged the names and the USGS naming was retained.[7]
Bonanza Peak was first summited in 1937 by Curtis I. James, Barrie James, and Joe Leuthold, all members of the Mazamas.[7]
Climate
Lying east of the
Climate data for Bonanza Peak 48.2355 N, 120.8742 W, Elevation: 8,593 ft (2,619 m) (1991–2020 normals) | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Mean daily maximum °F (°C) | 24.2 (−4.3) |
23.8 (−4.6) |
25.3 (−3.7) |
31.0 (−0.6) |
39.2 (4.0) |
45.0 (7.2) |
55.0 (12.8) |
55.6 (13.1) |
50.0 (10.0) |
39.2 (4.0) |
27.2 (−2.7) |
22.6 (−5.2) |
36.5 (2.5) |
Daily mean °F (°C) | 19.2 (−7.1) |
17.6 (−8.0) |
18.0 (−7.8) |
22.3 (−5.4) |
30.3 (−0.9) |
35.9 (2.2) |
44.7 (7.1) |
45.1 (7.3) |
39.6 (4.2) |
30.5 (−0.8) |
21.9 (−5.6) |
18.0 (−7.8) |
28.6 (−1.9) |
Mean daily minimum °F (°C) | 14.3 (−9.8) |
11.4 (−11.4) |
10.7 (−11.8) |
13.7 (−10.2) |
21.4 (−5.9) |
26.8 (−2.9) |
34.4 (1.3) |
34.6 (1.4) |
29.3 (−1.5) |
21.9 (−5.6) |
16.5 (−8.6) |
13.3 (−10.4) |
20.7 (−6.3) |
Average precipitation inches (mm) | 15.01 (381) |
13.30 (338) |
13.23 (336) |
8.11 (206) |
4.56 (116) |
3.56 (90) |
1.52 (39) |
2.03 (52) |
4.22 (107) |
9.83 (250) |
14.48 (368) |
15.32 (389) |
105.17 (2,672) |
Source: PRISM Climate Group[8] |
Geology
The North Cascades features some of the most rugged topography in the
The history of the formation of the Cascade Mountains dates back millions of years ago to the late
During the Pleistocene period dating back over two million years ago, glaciation advancing and retreating repeatedly scoured the landscape leaving deposits of rock debris.[9] The U-shaped cross section of the river valleys is a result of recent glaciation. Uplift and faulting in combination with glaciation have been the dominant processes which have created the tall peaks and deep valleys of the North Cascades area.
See also
- Geography of the North Cascades
- List of mountain peaks of Washington (state)
Gallery
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Bonanza from Lyman Lakes area
-
Bonanza and North Star Mountain, from Plummer Mountain
References
- ^ a b c d e "Bonanza Peak, Washington". Peakbagger.com. Retrieved 2009-06-06.
- ^ a b c Beckey, Fred W. Cascade Alpine Guide, Climbing and High Routes. Seattle, WA: Mountaineers Books, 2008.
- ^ "Washington County High Points". Peakbagger.com. Retrieved 2009-06-06.
- ^ "Bonanza Peak". SummitPost.org. Retrieved 2009-06-06.
- ^ "Bonanza Peak". Peakware.com. Archived from the original on 2016-03-04. Retrieved 2009-06-06.
- GNISwebsite
- ^ ISBN 978-0918664006.
- ^ "PRISM Climate Group, Oregon State University". PRISM Climate Group, Oregon State University. Retrieved October 4, 2023.
To find the table data on the PRISM website, start by clicking Coordinates (under Location); copy Latitude and Longitude figures from top of table; click Zoom to location; click Precipitation, Minimum temp, Mean temp, Maximum temp; click 30-year normals, 1991-2020; click 800m; click Retrieve Time Series button.
- ^ a b c d Kruckeberg, Arthur (1991). The Natural History of Puget Sound Country. University of Washington Press.
External links
- Bonanza and Martin Peaks: PBase aerial photo
- Weather forecast: Bonanza Peak