Grandaddy Lake, Utah - 7.5 Minute Series Topo Map SH-ES7-A 2 to 32 feet per

2 to 32 feet per day at different locations and may be primarily dependent on the extent of fracturing

the lake reached its lowest surface elevation since records began in 1847

The character of two of the hydrologic boundaries of the upper Ash Creek drainage basin ground-water system is speculative

Plates: 29 pl

Contours make it possible to measure the height of mountains

Grandaddy Lake, Utah - 7.5 Minute Series Topo Map SH-ES7-A 2 to 32 feet perThe 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