Journal of The Hydraulics Division. Vol. 107 No. 1 (1981). 

 - New York : American Society of Civil Engineers.  [date of publication not identified] 
 - p. 
<br/><br/> It contains of Papers, Technical Note and Discussions on January 1981 in Vol. 107 No. 1. 
<br/><br/>Surface Hydrology: I-Explanation of Phenomena / Dan Zaslavsky and Gideon Sinai. Surface Hydrology: II-Distribution of Raindrops / Dan Zaslavsky and Gideon Sinai. Surface Hydrology: III-Causes of Lateral Flow / Dan Zaslavsky and Gideon Sinai. Surface Hydrology: IV-Flow in Sloping, Layered Soil / Dan Zaslavsky and Gideon Sinai. Surface Hydrology: V-In-Surface Transient Flow / Dan Zaslavsky and Gideon Sinai. Multiport Sleeve Valve Development and Application / Philip H. Burgi, Edward O. Green, and Raoul E. Thibault. TECHNICAL NOTES : Proc. Paper 15957 - Re-Examination of Nikuradse Roughness Data / William R. Brownlie. River Bed Aggradation due to Overloading / Subhash C. Jain. Sediment Yield from Cultivated Lands: Selected Bibliography / Frank D. Masch, Michael A. Ports, and A. R. Robinson. Flow Investigations in Two Pumping Pits / G. K. Nathan. Surface Tension Effect in Profile of a Free Vortex / Nevzat Yildirim and Subhash C. Jain. DISCUSSION : Proc. Paper 15953 - Dilution in a Vertical Round Buoyant Jet / Nikolas E. Kotsovinos (May, 1978. Prior Discussion: May, 1979). Closure. Two-Dimensional Bubble Plumes / David L. Wilkinson (Feb., 1979). Errata. Hydraulic Resistance of Artificial Strip Roughness / Donald W. Knight and J. Alasdair Macdonald (June, 1979. Prior Discussions: June, July, 1980). Closure. Shear-Stress Distribution in Stable Channel Bends / Mamdouh A. Nouh and Ronald D. Townsend (Oct., 1979. Prior Discussion: July, 1980). Closure.  Calculation of Strongly Curved Open Channel Flow by Michael A. Leschziner and Wolfgang Rodi (Oct., 1979. Prior Discussion: Oct., 1980) / Habib O. Anwar and James G. Rodger. Longitudinal Dispersion in Rivers by Spyridon Beltaos (Jan., 1980) / Mustafa Gogus. Optimization of Unit Hydrograph Determination by Larry W. Mays and Lynn Coles (Jan., 1980. Prior Discussions: Sept., Nov., Dec., 1980) / Dale D. Meredith and Timothy E. Byrnes. Set of Components in Pipe Networks by M. Chandrashekar Om., 1980. Prior Discussion: Oct., 1980) / Michael A. Collins. Tidal Hydraulics in Estuarine Channels by Robert M. Snyder (Feb., 1980) / Zbigniew W. Kundzewicz. Ocean Outfall Dilution: Effects of Currents by Philip J. W. Roberts (May, 1980) / Henry H. C. Lin. Some Paradoxes in the History of Hydraulics by Hunter Rouse (June, 1980) / Mohammad A. Gill.