The Upper Powder Watershed (HUC 10090202) covers an area of approximately 1,918 square miles in northeastern Oregon. The watershed contains several major tributaries, including Camp Creek, East Fork Powder River, and Middle Fork Powder River, which feed into the Powder River. The region experiences a semi-arid climate, with hot summers and cold winters, and typically receives the majority of its precipitation in the form of snow. The snowpack in the area is critical for water supply, as it serves as a natural reservoir. Surface water in the watershed is used for irrigation, municipal supply, and recreation. Interesting climatic trends include an increase in temperature and a decrease in snowpack over the past several decades, which could have implications for the region's water supply and ecosystem health. Reservoir constituents in the watershed include sediment, nutrients, and pollutants, which can impact water quality and aquatic habitats.