The Powell Watershed (HUC 06010206) covers an area of 3,926 square kilometers and is situated in the central part of Wyoming, USA. The watershed is mostly dominated by arid and semi-arid environments, and its hydrology is largely dependent on snowpack and precipitation. The snowpack in the region is usually deep and persistent, and it often sustains the surface water flows throughout the year. The surface water in the watershed is generally of good quality, containing low levels of contaminants. The reservoirs in the region are used for irrigation and hydroelectric power generation. Interesting climatic facts about the watershed include its high elevation, which results in cooler temperatures and more precipitation than neighboring areas. Recent trends indicate that the region is experiencing a decrease in snow cover and an increase in temperatures.