Journal of the Irrigation and Drainage Division. Vol. 116 No. 6 (1990). 

 - New York : American Society of Civil Engineers.  [date of publication not identified] 
 - p. 
<br/><br/> It contains of Papers and Discussions for 1990 in Vol. 116 No. 6. 
<br/><br/>EDITORIAL. TECHNICAL PAPERS : Soil Nitrate Profiles under Irrigation on Coastal Plain Soils / W. F. Ritter, A. E. M. Chirnside, and R. W. Scarborough. Runoff Prediction Uncertainty for Ungauged Agricultural Watersheds / David M. Goldman, Miguel A. Marifio, and Arlen D. Feldman. Dynamic Response of Automatic Water-Level Controller I: Theory / Changde Wang, Albert J. Clemmens, and William E. Hart. Dynamic Response of Automatic Water-Level Controller II: Application / Albert J. Clemmens, Changde Wang, and John A. Replogle. Rating Correction for Lateral Settlement of Parshall Flumes / Steven R. Abt and Kenneth J. Staker. Performance Measures for Evaluation of Irrigation-Water-Delivery Systems / David J. Molden and Timothy K. Gates. Vapor-Budget Measurement of Irrigation Evaporative Losses / P. Inmula and B. L. Sill. Derivation of Infiltration Equation Using Systems Approach / V. P. Singh and F. X. Yu. DISCUSSIONS : Flow Measurement with Trapezoidal Free Overfall. Robert J. Keller and Soon S. Fong / George Terzidis and Litsa Anastasiadou-Partheniou, George K. Noutsopoulos and George C. Christodoulou. Closure by authors. REVIEWERS OF THE JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING. END OF YEAR INDEX.