File:Blair's Landing Battlefield Louisiana.jpg
The ABPP adjusted the Study Area to conform to the course of the Red River c. 1864. Also, the ABPP added the approach route used by BG Thomas Green’s Cavalry Division. Green was attempting to intercept the Federal flotilla, which was slowly working its way down the Red River.
The Core Area reflects the nearly two-mile front covered by the Federal gunboats and army transports as they moved down the river.