The Knoll, Utah - 7.5 Minute Series Topo Map Rafting each with its own unique

each with its own unique charm and challenges

Options for running the Green River and Yampa River

By Bruce Grubbs

Published: 2025

The Knoll, Utah - 7.5 Minute Series Topo Map Rafting each with its own uniqueThe distinctive characteristic of a topographic map is that the shape of the Earth's surface is shown by contour lines. Contours are imaginary lines that join points of equal elevation on the surface of the land above or below a reference surface, such as mean sea level. Contours make it possible to measure the height of mountains, depths of the ocean bottom, and steepness of slopes. A topographic map shows more than contours. The map also includes