Death Valley Unified School District Death Valley Unified School District Death Valley Unified School District (DVUSD) is a public school district in Inyo County, California. It consists of five schools: DVUSD is the largest school district in California in terms of square miles covered, but one of the smallest in terms of student enrollment. In 2012 the entire district served only 60 students. DVUSD is located in eastern Inyo County and borders the state of Nevada. It serves the entire southeast region of Inyo County and covers approximately of the Mojave Desert. The total population within this region is about 1,000, and DVUSD is the
Death Valley pupfish is 4 times more saline than the ocean, hot water up to , and cold water down to . This species is known from only two locations in Death Valley: Salt Creek (subspecies "salinus") at about 49 meters below sea level, and Cottonball Marsh (subspecies "milleri"), at about 80 meters below sea level. They are thought to be the remainders of a large ecosystem of fish species that lived in Lake Manly, which dried up at the end of the last ice age leaving the present day Death Valley. The Salt Creek subspecies is also found at River Springs and