Answer:
Nevada has extensive deserts, defined as having less than 10 inches of precipitation annually, and is commonly considered to be arid for general purposes of climatic classification. However, Nevada also has mountains which are covered by snow in winter - hence the name Nevada. Some higher elevations receive more than 40 inches of precipitation on the average, due to the orographic effects of the high mountain ranges. There are many lakes, reservoirs, springs and streams in the state, along with great groundwater basins. The broad categories of Humid or Arid are less meaningful in areas where water is imported. Western Nevada has the Newlands Project and southern Nevada imports water supplies from the Colorado River. Conversely, drought effects can be man-caused by water exports or diversions, which have impacted the Pyramid and Walker Lake areas. Rainfall is not strictly impaired across the state by the Sierra Nevada because the northern regions receive winter storm tracks from the northwest, and the southern regions receive summer monsoonal storms from the south.