• View from Sourdough Mountain Overlook  A view looking down onto Diablo Lake. Photo Credit: NPS/Michael Silverman, 2010.

    North Cascades

    National Park Washington

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  • 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 »

Acknowledgements and References


Our monitoring program is supported by the National Park Service via NOCA base funds and the Vital Signs program. Seattle City Light, U.S.G.S., and Earthwatch have also made valuable contributions to our program, as have faculty and staff at Portland State University and Western Washington University. We also thank the countless volunteers whom have generously contributed to the project in a variety of ways over the years.

Fountain, A.G. and A.V. Vecchia, 1992. How many ablation stakes are enough?, Poster presented at the fall American Geophysical Union Meeting, San Francisco, California.

Granshaw, F.D., 2001. Glacier Change in the North Cascades National Park Complex, Washington State USA, 1958-1998, M.S. Thesis Portland State University.

Krimmel, R.M., 1993. personal communication, US Geological Survey Ice and Climate Project, Tacoma, Washington.

Meier, M.F., 1961. Mass budget of South Cascade Glacier, 1957-1960, U.S. Geological Survey Professional Paper 424-B, pp. B206-211.

Meier, M.F. and W.V. Tangborn, 1965, Net budget and flow of South Cascade Glacier, Washington, Journal of Glaciology, 5, no. 41, pp. 547-566.

Meier, M.F., 1966, Some glaciological interpretations from remapping programs on South Cascade, Klawatti, and Nisqually glaciers, Washington, Canadian Journal of Earth Science, 3(6), pp. 811-818.

Meier, M.F., L.R. Mayo, and A.L. Post, 1971. Combined ice and waterbalances of Gulkana and Wolverine Glaciers, Alaska, and South Cascade Glacier, Washington, 1965 and 1966 hydrologic years, U.S. Geological Survey Professional Paper 715-A, 23 p.

Ostrem, G. and A. Stanley, 1969. Glacier mass balance measurements - a manual for field and office measurements, The Canadian Department of Energy, Mines and Resources, and the Norwegian Water Resources and Electricity Board.

Ostrem, G. and Brugman, M., 1991. “Glacier Mass Balance Measurements – A manual for field and office work.” NHRI Science Report n. 4, Environment Canada, 224 p.

Riedel, J.L., 1987. Chronology of later Holocene Glacier Recession in the Cascade Range, Washington, M.S. Thesis University of Wisconsin-Madison.

Patterson, W.S.B., 1981. The Physics of Glaciers, Pergamon Press, Elmsford, N.Y., 380 p.

Post, A., D. Richardson, W.V. Tangborn, and F.L. Rosselot, 1971. Inventory of Glaciers in North Cascades, Washington, U.S. Geological Survey Professional Paper 705-A.

Tangborn, W.V., R.M. Krimmel, and M.F. Meier, 1971. A comparison of glacier mass balance by glaciological, hydrological, and mapping methods, South Cascade Glacier, Washington, Snow and Ice Symposium, IAHS-AISH Publication no. 104.

Tangborn, W.V., A.G. Fountain, and W.G. Sikonia, 1990. Effect of area distribution with altitude on glacier mass balance - a comparison of North and South Klawatti glaciers, Washington state, Annals of Glaciology, 14, pp. 278-282.

Did You Know?

Long horned beetle

There are more insects in the Park than any other group of animals; in fact, 95% of all animal species on earth are insects. Take your time to explore the breathtaking world of butterflies, beetles, and bugs. More...