Highway 20 Will Be Closed East of the Park For Culvert Repairs On Oct 21 & 22.
Highway 20 will be completely closed between mileposts 147 & 157 (Granite Creek to Rainy Pass) from 6 a.m. Oct. 21 to 4 p.m. Oct. 22. The Easy Pass trailhead will be inaccessible during this time. More »
Diablo Lake To Be Drawn Down Three Feet in Oct., Trailer-Launched Boats Affected
Diablo Lake will be drawn down 3 vertical feet for facility repairs from October 8-17. During the drawdown, boats with trailers will not be able to launch or take boats off the water. Hand-launched vessels will still be able to launch. More »
Cascade River Road will be open as normal through fall/winter 2014
Cascade River Rd. will be open in 2014 until snow conditions make it impassable to vehicles, as normal. The road closure that was planned to begin September 8 has been postponed beyond 2014 due to unforeseen circumstances. More »
Miners and settlers began building more roads into the wilderness. The Goat Trail had a dangerous section known as the Devil's Corner, where a hanging bridge made of split logs traversed a narrow ledge.
In 1930, the Diablo Dam was the highest dam in the world (389 ft.). Ross Dam was completed in 1949 (540 ft.) and Gorge Dam (300 ft.) was completed in 1961.
Between 1925 and 1926, the waters of Lake Chelan were raised 21 feet by a hydroelectric dam which was built down in Chelan. The additional water would have flooded many buildings like the Field Hotel so they were dismantled or moved. Construction of major hydroelectric development of the Skagit River began in 1918, when Seattle City Light was issued permits to begin construction of three dams along the river. Seattle City Light eventually built a railroad up the Skagit Valley to its company towns of Newhalem and Diablo. A diversionary dam at Gorge Creek was completed in 1924, and Diablo Dam - at that time the highest dam in the world - in 1930. Ross Dam, dedicated in 1940, was raised in 1949 to 540 feet, making it the highest of the three dams providing power to the city of Seattle. Visible from State Route 20 between Newhalem and Diablo, the present Gorge Dam was completed in 1961.
The North Cascades Highway was completed in 1972. Closed in the winter, this scenic highway crosses two passes: Rainy Pass (4860 ft., 1481 m) and Washington Pass (5483 ft., 1671 m)
Did You Know?
The North Cascades are well known for the abundant waterfalls that lace the mountains. Two of the best known waterfalls are Gorge Falls between Newhalem and Diablo along State Route 20 and Rainbow Falls in the Stehekin Valley.