Three Prong Mtn, Idaho - 7.5 Minute Series Topo Map SH-5D Although Hecker included information on

Although Hecker included information on other folds and Quaternary deformation in Utah

historical production data

and outcrop areas of major uranium-bearing strata

Sandy soils along Castle and Placer Creeks are susceptible to piping and erosion

and l6) ground-water resources

Three Prong Mtn, Idaho - 7.5 Minute Series Topo Map SH-5D Although Hecker included information onThe 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