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Snowgrass Mountain
Snowgrass Mountain.jpg
Snowgrass Mountain
Highest point
Elevation 7,993 ft (2,436 m)
Prominence 393 ft (120 m)
Isolation 1.34 mi (2.16 km)
Parent peak Big Chiwaukum (8,081 ft)
Snowgrass Mountain is located in Washington (state)
Snowgrass Mountain
Snowgrass Mountain
Location in Washington (state)
Snowgrass Mountain is located in the United States
Snowgrass Mountain
Snowgrass Mountain
Location in the United States
Location Chelan County
Washington state, U.S.
Parent range Chiwaukum Mountains
Wenatchee Mountains
Cascade Range
Topo map USGS Chiwaukum Mountains
Type of rock Schist
First ascent 1914
Easiest route Scrambling

Snowgrass Mountain is a 7,993-foot (2,436-metre) mountain summit located in Chelan County of Washington state. Snowgrass Mountain is situated northeast of Frosty Pass and within the Alpine Lakes Wilderness. Snowgrass Mountain is the second-highest peak in the Chiwaukum Mountains, a subset of the Cascade Range. Its nearest higher peak is Big Chiwaukum, 1.23 mi (1.98 km) to the north. Precipitation runoff from Snowgrass drains into tributaries of the Wenatchee River.


Most weather fronts originate in the Pacific Ocean, and travel east toward the Cascade Mountains. As fronts approach, they are forced upward by the peaks of the Cascade Range, causing them to drop their moisture in the form of rain or snowfall onto the Cascades (Orographic lift). As a result, the Cascades experience high precipitation, especially during the winter months in the form of snowfall. During winter months, weather is usually cloudy, but, due to high pressure systems over the Pacific Ocean that intensify during summer months, there is often little or no cloud cover during the summer.


Snowgrass Mountain green
Snowgrass Mountain

The Alpine Lakes Wilderness features some of the most rugged topography in the Cascade Range with craggy peaks and ridges, deep glacial valleys, and granite walls spotted with over 700 mountain lakes. Geological events occurring many years ago created the diverse topography and drastic elevation changes over the Cascade Range leading to the various climate differences.

Snowgrass Mountain is composed of schist, part of the Nason terrane laid down 210 million years ago. During the Pleistocene period dating back over two million years ago, glaciation advancing and retreating repeatedly scoured the landscape leaving deposits of rock debris. The last glacial retreat in the Alpine Lakes area began about 14,000 years ago and was north of the Canada–US border by 10,000 years ago. The "U"-shaped cross section of the river valleys are a result of that 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 Alpine Lakes Wilderness area.

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