UGS maps and accompanying booklets describe stratigraphy, structure, Quaternary geology, geologic hazards, economic geology, groundwater resources, and geologic resources. Maps are available in 7.5-minute, 30 x 60-minute, and 1 x 2-degree quadrangles. Additional maps include non-quadrangle geologic maps, national park and state park geologic maps, and other geologic data. In addition to PDF files, many maps are also available as geographic information system (GIS) databases, downloadable files, and interactive web apps.
Standard Map Scales and Sizes
7.5-MINUTE QUADRANGLE MAPS
7.5-minute quadrangle maps are rectangularly shaped mapping areas that detail 7.5 minutes of latitude by 7.5 minutes of longitude, or about 55 square miles in Utah. They are the standard series for detailed geologic mapping where one inch on the map represents 24,000 inches, or 2,000 feet, on the ground. These are generally more detailed maps in comparison to other scale maps because they focus on a comparatively smaller area.
30 x 60-MINUTE QUADRANGLE MAPS
30’x60′ quadrangle maps cover 30 minutes of latitude by 60 minutes of longitude, or about 1,760 square miles in Utah, and are the standard series for intermediate-scale geologic mapping. In this series, one inch on the map represents 100,000 inches, or 1.6 miles, on the ground.
1 x 2-DEGREE QUADRANGLE MAPS
1×2-degree quadrangle maps cover 1 degree of latitude by 2 degrees of longitude and are small-scale regional maps. In this series, one inch on the map represents 250,000 inches, or about 4 miles, on the ground.