The Upper Dan Watershed is located in northwestern Wyoming and covers an area of approximately 2,140 square miles. The area is characterized by a cold and dry climate, with snowpack being the primary source of water for the region. The watershed is fed by several creeks and streams, including the North Fork Shoshone River and the South Fork Shoshone River. The surface water quality in the watershed is generally good, with low levels of pollutants and suspended solids. There are several reservoirs in the watershed, including the Buffalo Bill Reservoir, which is used for irrigation and hydroelectric power generation. The reservoirs are important for water storage during the dry months of the year. Interesting climatic facts in the Upper Dan Watershed include the high variability in snowfall from year to year, with some years experiencing above-average snowfall and others experiencing below-average snowfall. Additionally, the region experiences significant seasonal fluctuations in temperature, with hot summers and cold winters. There is also evidence of a long-term warming trend in the region, which could have significant impacts on the hydrology and ecology of the watershed.