TY - SER TI - Journal of Hydraulic Engineering.. Vol. 119 No. 4 (1993) PY - 0000///[date of publication not identified] CY - New York : American Society of Civil Engineers. N1 - It contains of Papers, Discussion on April 1993 in Vol. 119 No. 4; PAPERS OF INTEREST. TECHNICAL PAPERS : Reservoir Destratification via Mechanical Mixers / Roban Stephens and Jdrg Imberger. Ouasi-3D Numerical Modeling of Shallow-Water Circulation / X. Jin and C. Kranenburg. Surface Sampling in Gravel Streams / Jon B. Fripp and Panayiotis Diplas. Critical Shear Stress of Natural Sediments / Peter R. Wilcock. Inverse Adjoint Estimation of Eddy Viscosity for Coastal Flow Models / Vijay G. Panchang and J. E. Richardson. DISCUSSIONS : Fluctuating Uplift and Lining Design in Spillway Stilling Basins. V. Fiorotto and A. Rinaldo / Ludovico Ivanissevich Machado. Closure by authors. Fully Coupled Unsteady Mobile Boundary Flow Model / L. R. P. Correia, B. G. Krishnappan, and W. H. Graf. By J. L. Rahuel. Closure by authors. Use of Density Current to Modify Thermal Structure of TVA Reservoirs. Vahid Alavian and Pete Ostrowski Jr. / Vassilios A. Tsihrintzis. Closure by authors. Separation of Skewness: Reality or Regional Artifact? Fahim Ashkar, Bernard Bobee, and Jacques Bernier / David E. Creighton Jr. Closure by authors. Routing of Heterogeneous Sediments over Movable Bed : Model Development. Andre van Niekerk, Koen R. Vogel, Rudy L. Slingerland, and John S. Bridge / J. L. Rahuel. Closure by authors. Study of Open-Channel Dynamics as Controlled Process. Y. A. Ermolin / James C. I. Dooge and J. J. Napiorkowski / Mohammad A. Gill. Closure by author. JOURNAL OF HYDRAULIC ENGINEERING QUESTIONNAIRE ER -