. The Sabine Trinity Neches Angelina and Sulphur Rivers are the major rivers in East Texas but the Brazos River and Red River also flow through the region the Brazos cuts through the southwest portion of the region while the Red River forms its northern border with Oklahoma and a portion of Arkansas in East Texas and the rest of the South small rivers and creeks collect into swamps called "bayous" and merge with the surrounding forest Bald cypress and Spanish moss are the dominant plants in bayous the most famous of these bayous are Cypress Bayou and Buffalo Bayou Cypress Bayou surrounds the Big Little and Black Cypress Rivers around Jefferson They flow east into Caddo Lake and the adjoining wetlands cover the rim and islands of the lake. .
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Southeast Container