The Upper Spokane Watershed (HUC 17010305) covers approximately 1,226 square miles in northeastern Washington State. It is mostly forested, with some agricultural land use in the lower elevations. Hydrologically, the watershed is characterized by the Spokane River and several tributaries, including the Little Spokane River and Hangman Creek. The area experiences a Mediterranean climate, with hot, dry summers and cold, wet winters. Snowpack in the watershed varies widely from year to year but is an important source of water for the region, particularly for downstream irrigation. The primary reservoir in the watershed is Long Lake, which serves as a source of drinking water for the city of Spokane. Interesting climatic facts include the region's tendency towards late frosts in the spring, as well as the occasional occurrence of wildfires in the summer months. Climate change is expected to impact the watershed by altering precipitation patterns, reducing snowpack, and increasing wildfire risk.