The Upper Smoky Hill Watershed (HUC 10260003) covers an area of approximately 5,300 square miles in central and western Kansas. The hydrology of the watershed is dominated by the Smoky Hill River, which flows through the region and is fed by numerous small tributaries. The region experiences a semi-arid climate with hot summers and cold winters. The area typically receives only a few inches of rainfall per year, with the majority of precipitation occurring in the form of snow during the winter months. The snowpack in the region is generally shallow and melts quickly due to the dryness of the air. Surface water and reservoirs in the watershed are important for irrigation and domestic water supply. Interesting climatic trends in the region include increasing temperatures and decreasing precipitation over the past several decades, which could have significant impacts on water resources in the future.