Don't attempt unsafe crossings. The park's official brochure map is free and provides a general overview of the backcountry. A map is available which shows the names and locations of designated campsites and crosscountry zones. Neither, however, is adequate for route planning and navigation. Green Trails maps contain more topographic information and include trail mileages.
USGS maps provide the most detailed topographic information.
Although campsite and trail information are often outdated, these are the preferred maps for mountaineering and cross-country travel. Maps are available by mail from the Northwest Interpretive Association or at ranger stations. Call or write for a brochure. If you're planning to travel cross-country, a compass is also recommended. Plan for harsh weather Check the forecast before leaving home, but remember that the weather in the North Cascades changes very quickly.