The Tularosa Valley Watershed (HUC 13050003) is located in south-central New Mexico and covers an area of 4,654 square miles. The watershed is dominated by arid and semi-arid landscapes with elevation ranging from 3,000 to 11,000 feet. It is home to the White Sands National Monument, which is composed of gypsum dunes that are constantly shifting due to wind patterns. The hydrology of the watershed is heavily influenced by the Sacramento Mountains and the Tularosa Basin. The area receives most of its precipitation during the monsoon season, which runs from June to September. Snowpack in the mountains provides an important source of water for the region. The watershed's surface water is primarily sourced from the Tularosa River, which is fed by several tributaries. There are several small reservoirs throughout the watershed, which store water for irrigation and municipal use. One interesting climatic trend in the area is the increasing frequency and intensity of droughts over the past few decades.