The Upper Carson Watershed, located in California and Nevada, covers an area of approximately 1,300 square miles. The watershed is primarily fed by snowpack, which provides water for surface water and reservoirs in the area. The Carson River flows through the watershed, and its tributaries supply much of the surface water. The watershed is home to several reservoirs, including the Carson River Reservoir, which provides water for irrigation and recreation. The area experiences a semi-arid climate, with hot summers and cold winters. The snowpack in the region has been declining in recent decades due to rising temperatures, leading to concerns about water availability in the future. Overall, the Upper Carson Watershed is an important source of water and recreation for the region, but its sustainability may be threatened by changing weather patterns.