These are the Navidad , Chicolete , and Zalco series. The Navidad, Chicolete, and Zalco soils have less than 35 percent clay throughout the control section. These soils occur on slightly higher convex shaped areas associated with natural levees of streams. Moderately well drained. Runoff is low.
Permeability is very slow.
Water enters the soil rapidly when dry and cracked, and very slow when it is moist. A perched water table occurs in the A and Bss horizons for periods of 2 to 4 weeks in winter and spring. Native vegetation includes pecan, elm, and live oak, with an understory of grasses such as big bluestem, little bluestem, switchgrass, indiangrass, Texas wintergrass and wild rye. Middle Gulf Coastal Prairies of Texas. The series is of small extent.