Surface water supply of the United States, 1931. Part 3. Ohio River basin. Nathan C. Grover, chief hydraulic engineer. E.D. Burchard, J.J. Dirzulaitis, H.E. Grosbach, A.W. Harrington, Wm. Kessler, W.R. King, Lasley Lee, and J.H. Morgan, district engineers. [U.S. Geological Survey Water-supply Paper 713.]