Sheridan, Wyoming - 30x60 Minute USGS Topographic Map 30%Sale recreation areas

recreation areas

and road conditions

making the book accessible and easy to use

Groundwater discharge in excess of recharge (groundwater mining) has lowered the potentiometric surface in Cedar Valley as much as 114 feet since 1939

country-living folks

Sheridan, Wyoming - 30x60 Minute USGS Topographic Map 30%Sale recreation areasThe 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