The Lake Meredith Watershed (HUC 11090105) covers an area of approximately 1,300 square miles in the Texas Panhandle. The watershed is characterized by a semi-arid climate, with limited precipitation and high evapotranspiration rates. The main source of water for the reservoir is from runoff and inflow from the Canadian River system. The watershed receives snowfall during the winter months, which contributes to the reservoir's water supply. The reservoir's constituents include sand, silt, clay, and organic matter. Interesting climatic facts include the region's high wind speeds and frequent dust storms, as well as the occasional occurrence of severe thunderstorms and tornadoes. In recent years, the region has experienced periods of drought, which have impacted the reservoir's water levels and the availability of water for agricultural and urban use.