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Alaska Topographic Maps will be Updated

Valdez A6 Quad Topo Map

The United States Geological Survey (USGS) has announced Alaska topographic maps will be updated this year. Topographic maps are characterized by the use of contour lines to show land relief or terrain features. Contours represent lines of equal elevation and spacing between lines is a fixed value. Closer contour lines describe steeper terrain features. Commonly […]