Crater Lake, Oregon - 30x60 Minute Series Topo Map Christa Sadler The primary source of drinking

The primary source of drinking and irrigation water in the Beryl-Enterprise area is ground water from the principal basin-fill aquifer

gleaned much about the area’s history by using information found on the historic district applications

There's nothing like tasty

ground-water compartments

in the words of editor Aubrey L

Crater Lake, Oregon - 30x60 Minute Series Topo Map Christa Sadler The primary source of drinkingThe 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