Gas welding a joint in a line of spiral pipe at the TVA's new Douglas Dam on the French Broad River, Tenn. This dam will be 161 feet high and 1,682 feet long, with a 31,600-acre reservoir area extending 43 miles upstream. With a useful storage capacity of approximately 1,330,000 acre-feet, this reservoir will make possible the addition of nearly 100,000 kw. of continuous power to the TVA system in dry years and almost 170,000 kw. in the average year