Title from verso. Verso reads: "Hydraulic Laboratory Director Peter Smith. Measuring velocity of flow of water coming through the single-bay model gate and across the stilling basin." Image is related to construction of the Chena Lakes...
Title from verso. Verso reads: "Peter Smith. Director, North Pacific Division, Hydraulic Laboratory, Oregon. Lowering gate in model of one bay of the outlet works. Pebbles show water action in stilling basin." Verso also stamped with the...
Title from verso. Verso reads: "Close-up of single-bay model (one of the 4 gates in the outlet works on the Chena River), showing experimental baffles in the stilling basin down-stream from the gate. Varying sizes, shapes, and locations of...