DistributionRead full entry
Range DescriptionThe range is limited to the Brazos River drainage in north-central Texas in the south of the United States (Scott et al. 1989). See Scott et al. (1989) for a detailed distribution map. See Dorcas and Mendelson (1991) for new records from Palo Pinto and Parker counties (Moffitt Bend and Littlefield Bend areas). This snake occupies about 303 km of stream plus about 70 km of two reservoirs (Possum Kingdom Lake and Lake Granbury) (Scott et al. 1989).