State Route 20 closed at Mile Post 134, Ross Dam
After a brief closure at Newhalem due to an avalanche and unstable conditions, SR 20 has re-opened to its normal winter closure point at MP 134, Ross Dam. The highway will remain closed from Ross Dam to MP 171 (Silver Star Creek) until spring re-opening. More »
Ross Dam Haul Road Closure Continues
A short segment of the Ross Dam Haul Road between the Diablo Lake suspension bridge and the tunnel remains closed to public use due to continued recovery following a March 2010 landslide. The closure will remain in effect through 2014. More »
Notice of planned work for the Cascade River Road, fall 2014
Visitors planning to access the park via the Cascade River Road after Labor Day should be advised that the Park Service is planning a fall closure of this road at Eldorado Creek (3 miles before the end of the road) in order to perform permanent repairs. More »
Nature & Science
North Cascades National Park Complex spans the Cascade Crest from the temperate rainforest of the wet west-side to the dry ponderosa pine ecosystem of the east. The park encompasses landscapes with over 9,000 feet of vertical relief. There results a high diversity of plants, over 1,600 species so far identified, and many other organisms adapted to a wide spectrum of habitats.
The relatively new mountains, glaciers and streams of North Cascades lie near a dynamic interface of tectonic plates and provide an opportunity to study geologic processes unfolding through time. Geologists and others seek answers to questions of global climate change, mountain building and erosion, volcanism, glaciation, stream dynamics, and more.
Did You Know?
In addition to Wilderness, Recreation Areas and National Park designations there are also five Research Natural Areas in the complex: Silver Lake, Pyramid Lake, Boston Glacier, Stetattle Creek and Big Beaver Valley.