TY - SER TI - Journal of Hydraulic Engineering.. Vol. 115 No. 2 (1989) PY - 0000///[date of publication not identified] CY - New York : American Society of Civil Engineers. N1 - It contains of Papers, Technical Notes and Discussions on February 1989 in Vol. 115 No. 2; TECHNICAL PAPERS : Methods for Analyzing Pipe Networks / Hans Bruun Nielsen. Optimal Pump Operation in Water Distribution / Anthony J. Tarquin and Jack Dowdy. Measurements of Mixed Transient Flows / James A. Cardle, Charles C. S. Song, and Mingshun Yuan. Friction Factors for Small Diameter Plastic Pipes / R. D. von Bernuth and Tonya Wilson. Nonlinear Flow Toward Wells / Zekai Sen. Diagnostic Model of Dispersion in Porous Media / David A. Chin. Capped Water Intakes in a Stratified Crossflow / Barry T. Goldring. Transitional Flow in Channel Junctions / Willi H. Hager. TECHNICAL NOTES : Mass Conservation: 1-D Open Channel Flow Equations / Lewis L. DeLong. Bias in Groundwater Samples Caused by Wellbore Flow / Thomas E. Reilly, 0. Lehn Franke, and Gordon D. Bennett. DISCUSSIONS : Initial Dilution of Horizontal Jet in Crossflow. Joseph H. W. Lee and Peter Neville-Jones / Merete Knudsen and Ian Wood, James J. Sharp. Closure by authors ER -