The Teton watershed, also known as HUC 10030205, covers an area of approximately 2,211 square miles in southeastern Idaho and western Wyoming. It is a headwater basin that supplies water to the Snake River system, which is a crucial source of irrigation and hydropower in the region. The hydrology of the Teton watershed is characterized by high snowfall accumulation in the winter and spring, and significant snowmelt in the summer months. This snowmelt contributes to the surface water and reservoirs in the watershed, which are used for various purposes, including irrigation, drinking water, and recreation. The area experiences a semi-arid climate with hot summers and cold winters, and has seen an increase in temperature over the past few decades, which may impact the timing and amount of snowmelt and subsequent water availability in the watershed.