The Black Watershed (HUC 03170007) is located in South Dakota and covers an area of approximately 2,050 square miles. The watershed is characterized by a semi-arid climate with low precipitation and high evaporation rates. Snowfall is minimal in this region, and the snowpack typically melts quickly in the spring, leading to rapid runoff. The primary surface water feature in the watershed is the Belle Fourche Reservoir, which serves as a source of irrigation and drinking water for nearby communities. However, the reservoir has been plagued by high levels of sediment and nutrients, leading to water quality concerns. Interesting climatic facts about the Black Watershed include its location in the "tornado alley" region of the United States, which makes it susceptible to severe weather events such as tornadoes and thunderstorms. Additionally, the region experiences occasional droughts, which can have significant impacts on local agriculture and water resources. Trends in the Black Watershed include increasing pressure on water resources due to population growth and agricultural expansion, as well as ongoing efforts to improve water quality in the Belle Fourche Reservoir through sediment and nutrient management strategies.