DOGAMI Lidar Illustrated - Three Sisters Geologic Guide and Recreation Map

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Three Sisters rec map cover

Three Sisters Geologic Guide and Recreation Map, by Daniel E. Coe

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This map shows more than 70 hiking, mountain biking, and winter recreation trails in the vicinity of the Three Sisters, including the Pacific Crest National Scenic Trail, as well as highways, Forest Service roads, wilderness areas, campgrounds, and snoparks. The eruptive history of the Three Sisters area and key geologic events are described in text, illustrations, and photographs.

mobile devices Mobile devices:

To get GPS-enabled maps, download the free PDF Maps app from Apple or Android app stores, then search the in-app Map Store for DOGAMI. Two map sides are available; each side is 99 cents.

Other maps in this series: Crater Lake | Mount Hood

trail map of Three Sisters area

geologic information Three Sisters glaciers

Three Sisters Geologic Guide and Recreation Map, 18 x 36 inches, by Daniel E. Coe.

This highly detailed map for the outdoors enthusiast uses a laser-based terrain elevation technology called lidar (light detection and ranging) as the base.

Lidar (light detection and ranging) is a remote sensing technique similar to radar that uses light pulses instead of radio waves. Lidar is typically “flown” or collected from planes and rapidly produces a large collection of very dense and accurate elevation points (up to 500,000 per second) over a large area. The product can be used to generate three-dimensional representations of the Earth’s surface and its features.

The Oregon Department of Geology and Mineral Industries (DOGAMI) uses lidar to create new-generation maps that are more accurate and comprehensive than any in the past. DOGAMI, via the Oregon Lidar Consortium, is continually acquiring new lidar data throughout Oregon.