COUSHATTA CREEK. Coushatta (originally Caschatta or Cachate) Creek rises three miles northeast of Alleyton in northeastern Colorado County (at 29°45' N, 96°27' W) and runs southeast for 15½ miles to its mouth on the San Bernard River, just north of the Atchison, Topeka and Santa Fe crossing (at 29°40' N, 96°16' W). The stream runs through broad, rolling to level coastal prairies with deep soils. The land is used for pasture or, where the terrain is level, for the production of rice. The lower part of the creek's course bisects the Attwater Prairie Chicken National Wildlife Refuge. The creek is named for the Coushatta Indians.