The Chattahoochee tail water, or better known as the "HOOCH", is arguably the best trout water in the "Deep South". Both the Chestatee and Chattahoochee rivers originate in the vast Chattahoochee National Forest lands of the North Georgia Appalachian Mountains. Over 764,000 acres of watershed provide the source for Lake Sidney Lanier. Lake Lanier is the most heavily used US Army Corps of Engineers impoundment in the nation. With over 600 miles of shoreline and 38,000 surface acres, combined with its proximity to Atlanta, there is no wonder this lake is a recreational Mecca with 10 million visitors annually. The entire watershed north of Buford dam consists of 19,000 square miles of mostly rural landscape where rainfall in some areas in the mountains can be over 80 inches per year. Although the geology of this region is not rich in calcium, much of the water entering the lake is enriched by runoff from poultry and other forms of agriculture. < p> At the south end of the lake, Buford Dam is operated to control water levels on Lake Lanier and provide flood control. During wet years the water is purchased for hydropower to enable the South East Power Administration to meet peak energy demands throughout the southeastern power grid. Drinking water consumption and waste assimilation are the most crucial demands on the Chattahoochee because of Atlanta's burgeoning population. Fortunately, recreation is becoming recognized as a valuable asset to the area and maintaining all of these exploits will be a challenge in the future. The Buford Dam Project is a classic tail water situation carefully managed by the Army Corps of Engineers. At depths of 130 ft cool water is released through tail race gates of this structure. You need to pay attention. Scheduled low-flow releases--typically 700 cubic feet per second--can be waded safely with either a wading staff or float tube. Moderate and high flows of 5,000 to 10,000 cfs are best fished from water craft such as pontoon or drift boats.