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Chattahoochee River. Explore This Article. The Chattahoochee River rises high in the Blue Ridge Mountains of Georgia and flows southwesterly toward the Alabama state line. From there the river tumbles for twenty miles over the fall lineâthe region of transition between the foothills of the Piedmont and the lower and flatter Coastal Plain.
Blue Ridge: To the west of the Piedmont, lies the Blue Ridge. Northeast of Roanoke, Virginia, the Blue Ridge rises steeply from the Piedmont in the east and the Appalachian Ridge and Valley Region in the west. It is the main eastern mountain range of the Appalachian Mountains.South of Roanoke, the Blue Ridge expands into a plateau with valleys, deep ravines, and the highest peaks in Virginia. Mount Rogers, the highest point in Virgina, is located in the Blue Ridge south of Roanoke.Appalachian Ridge and Valley Region: Extending southwest to northeast along Virginia's western border is the Appalachian Ridge and Valley Region.The Great Valley, sometimes called the Valley of Virginia, lies against the Blue Ridge in the east. Actually, the Great Valley is a series of valleys divided by mountains.ppalachian Ridge and Valley Region: Extending southwest to northeast along Virginia's western border is the Appalachian Ridge and Valley Region. The Great Valley, sometimes called the Valley of Virginia, lies against the Blue Ridge in the east. Actually, the Great Valley is a series of valleys divided by mountains.