TY - SER TI - Journal of Hydraulic Engineering.. Vol. 116 No. 4 (1990) PY - 0000///[date of publication not identified] CY - New York : American Society of Civil Engineers. N1 - It contains of Papers, Discussion on April 1990 in Vol. 116 No. 4; TECHNICAL PAPERS : Investigation of Turbulent Flow over Dunes / Cesar Mendoza and Hsieh Wen Shen. Linear Hyperbolic Model for Alluvial Channels / Hou Zhang and R. Kahawita. Physically Based Flood Features and Frequencies / Hsieh Wen Shen, Gregory John Koch, and Jayantha T. B. Obeysekera. Mechanics of Local Scour Around Submarine Pipelines / Yee-Meng Chiew. Friction Factor of Armored River Beds / Johannes Gessler. Bed Evolution in Channel Bends. Chin-lien Yen and Shin-ya Ho. Roughness Effects on Flow and Shear Stress Near Outside Bank of Curved Channel / Yee-Chung Jin, Peter M. Steffler, and Faye E. Hicks. TECHNICAL NOTES : Least-Squares Parameter Estimation for Muskingum Flood Routing / Alvaro A. Aldama. Skimming Flow in Stepped Spillways / N. Rajaratnam. Computing Phase Speeds at Open Boundary / Lakshmi H. Kantha, Alan F. Blumberg, and George L. Mellor. DISCUSSIONS : Turbulence Modeling of Surface Water Flow and Transport: Part III. ASCE Task Committee on Turbulence Models in Hydraulic Computations / Jan J. Leendertse. Closure by author. Turbulence Modeling of Surface Water Flow and Transport: Part IV. ASCE Task Committee on Turbulence Models in Hydraulic Computations / Jan J. Leendertse. Closure by author. Closure by George L. Mellor. ERRATA ER -