The Rattlesnake Watershed, located in Montana, has a land area of 84,000 acres and is an important source of water for the city of Missoula. The hydrology of the watershed is influenced by the Rattlesnake Creek and its tributaries, which provide surface water to the area. The watershed receives an average of 50 inches of snowpack each year, which contributes to the water supply for the reservoirs in the region. The surface water in the watershed is known for its high-quality and is used for both recreation and drinking water. The reservoirs in the area contain a variety of constituents, including fish, wildlife, and recreational opportunities. Interesting climatic facts about the area include the high variability in precipitation and temperature, with trends indicating increasing temperatures and decreased snowpack in recent years.