An cropping area with the center coordinates (30°34′11″N, 96°29′4″W) along the Brazos River near Snook, Burleson County, Texas, was selected for this study (Fig. 1). The soils in the area are very deep and very slowly permeable with slopes ranging from 0% to 3%. The surface layer and subsoil are reddish brown clay underlain by dark gray silty clay loam. The underlying material is mainly composed of clayey and loamy alluvial sediments. The clayey surface layer may delay cultivation after periods of prolonged rainfall. Cotton, corn, and grain sorghum are the main crops. Minor crops, such as winter wheat, soybeans, watermelon, and alfalfa, are also cultivated. Corn and grain sorghum are typically planted in February to March and harvested in July to August, while cotton is planted in April to May and harvested in August to October. In the 2014 growing season, cotton and corn were the two main crops, while grain sorghum, winter wheat, and watermelons were grown in the study area. Other noncrop cover types included mixed herbaceous species (pasture), lush grass (hay), mixed woody species, water bodies, and bare soil/impervious surfaces.