Maximum discharge along the river is currently at the reporting a streamflow rate of cfs. This is also the highest stage along the Caddo River, with a gauge stage of ft at this location. This river is monitored from 1 different streamgauging stations along the Caddo River, the highest being situated at an altitude of ft, the .
The Caddo Nation is a confederacy of several Southeastern Native American tribes. Their ancestors historically inhabited much of what is now East Texas, Louisiana, and portions of southern Arkansas and Oklahoma. They were descendants of the Caddoan Mississippian culture that constructed huge earthwork mounds at several sites in this territory. In the early 19th century, Caddo people were forced to a reservation in Texas; they were removed to Indian Territory in 1859.
Today, the Caddo Nation of Oklahoma is a federally recognized tribe with its capital at Binger, Oklahoma. Descendants of the historic Caddo tribes, with documentation of at least 1⁄16 ancestry, are eligible to enroll as members in the Caddo Nation. The several Caddo languages have converged into a single language.