IndianaMapMost USGS topographic maps use brown contours to show the shape and elevation of the terrain. Contour intervals vary, depending mainly on the type of terrain and the scale of the map. (Scale is the relationship between distance on the map and distance on the ground.) In the 1:250,000 series, quadrangles are 1 degree of latitude by 2 degrees of longitude. Along the coasts dimensions are modified to fit some maps. The series consists of 489 sheets. Ground area shown varies with latitude, from 8,218 square miles at 30 degrees north to 6,222 square miles at 49 degrees north. Sheet size is about 32 x 22 inches. About 8 percent of these sheets have been replaced by folded metric maps, about 36 x 22 inches in size.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/777f12f361ca4277b10e477b98d301e6_88engIndianaMapPublic250k USGS Quadrangle Boundaries [Indiana]Web servicesIndianaLast Modified: 2024-12-18