The Death Valley expedition The Death Valley expedition The Death Valley expedition was an 1891 expedition to discover the geographic distributions of plants (phytogeography) and animals in California's Death Valley. It was the first of a series of expeditions funded by an 1890 act of the United States Congress. The expedition included biologists, naturalists, botanists, and zoologists. They produced valuable reports of historic significance in several fields, including ""Botany of the Death Valley Expedition"", "“The Death Valley Expedition: A Biological Survey of Parts of California, Nevada, Arizona, and Utah”", and ""Annotated List of the Reptiles and Batrachians Collected by the Death Valley Expedition in
Death Valley low. As recently as July 12, 2012, the low temperature at Death Valley dropped to just after a high of on the previous day. The only other location which matches Death Valley's overnight low temperature of 107 °F in recent years is Khasab Airport in Oman, which also recorded a low of on June 27, 2012, and later one of on June 21, 2017. Also on July 12, 2012, the mean 24-hour temperature recorded at Death Valley was , which makes it the world's warmest 24-hour temperature on record. The average annual precipitation in Death Valley is , while the