There are no competing series. Soils in similar families include the Gladewater , Roetex , Tinn , and Zilaboy series. In addition, Roetex soils have matrix colors with hue redder than 7.5YR in the control section. Tinn soils are calcareous throughout and are well drained. Zilaboy soils do not have aquic conditions above 20 inches.
Navasota soils are on nearly level flood plains.
Slope gradients range from 0 to 1 percent. The soil formed in clayey alluvium. Mean annual precipitation ranges from 32 to 40 inches, and mean annual temperature ranges from 65 to 70 degrees F. Frost free days range from 240 to 280, and elevation ranges from 175 to 330 feet. The Thornthwaite P-E indices range from 44 to 64. These are the Dutek , Edge , Eufaula , Oletha , Sandow , Silawa , Uhland , and Zilaboy series.