Statistics for occurrence #1 of “Chattahoochee river” in chapter 5, page 91 of Col. J. J. Dickison, Confederate Military History, a library of Confederate States Military History: Volume 11.2, Florida:
...most caution and vigilance were required.
Sections of Gamble's and Abell's batteries were held in middle Florida awaiting the attacks which from indications were imminent.
On the west side of the Chattahoochee river the country was guarded by two detachments
...