Journal of The Hydraulics Division. Vol. 107 No. 9 (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 September 1981 in Vol. 107 No. 9. 
<br/><br/>Intakes and Outlets for Low-Head Hydropower / Clifford A. Pugh. Loop Equations with Unknown Pipe Characteristics / Emanuel Gofman and Michael Rodeh. Parametric Study of Flood Wave Propagation / K. Sridharan and M. S. Mohan Kumar. Demand Forecasting in Water Supply Networks / Patrick F. Perry. Sediment Contaminant Transport Model / Yasuo Onishi. DISCUSSION : Proc. Paper 16479 - Calculation of Strongly Curved Open Channel Flow / Michael Leschziner and Wolfgang Rodi (Oct., 1979. Prior Discussions: Oct., 1980, Jan., 1981). Closure. Approximate Flood Routing Methods: A Review / Erwin P. Weinmann and Eric M. Laurenson (Dec., 1979. Prior Discussions: Nov., 1980, Dec., 1980, Apr., 1981). Closure. Steady-State Estimation of Cooling Pond Performance / Gerhard H. Jirka and Masataka Watanabe (June, 1980. Prior Discussion: Feb., 1981). Closure. Bar Resistance of Gravel-Bed Stream by Gary Parker and Allen W. Peterson (Oct., 1980) / Arun Kumar and Rema Devi. Armored Versus Paved Gravel Beds by D. I. Bray and M. Church (Nov., 1980) / Paul A. Carling, Robert T. Milhous, Gary Parker. Sand Bed Instability Due to Bed Load Motion / Hiroji Nakagawa and Tetsuro Tsujimoto (Dec., 1980). Errata.