Foreword / Norman R. Fausey, Charimanh - Richard L. Bengtson, Vicechairman -- Tribute / William R. Johnston

-- Keynote addresses -- Design and Management of drainage Systems / R. Wayne Skaggs -- Drain envelopes / L. S.

Willardson -- Drainage Water Quality and the Environment / J. W. Gilliam -- Drainage design -- Drainage

Design practices in the North Central Region, USA / B. H. Nolte, C. J. W. Drablos, J. F. Rice, and C.

Schwieterman -- Design Drainage Criteria for Northern Ontario, Canada / Denis Millette, Chandra Madramootoo,

Urgel Delisle, and Wayne Wood -- Computerized Drainage Design for Arid, Irrigated Areas / D. S. Durnford, B.

J. Gutwein, and T. H. Podmore -- Optimal Design of Tile Drains Under Uncertainty in Soil Properties / Kenneth

Strzepek and Luis García -- Improved Design for Pipe Collector Drains / O. Wahid El-din, S. Abdel-Dayem, M. H.

Amer, T. M. Owais, and J. R. Rydzewski -- Drainage Requirements of a Grazed Hillslope Sequence / H. F. R.

Lagocki -- Water Movement Through Soil -- Modeling Transient Soil Water Flow and Oxygen Transport in Soils /

Avinash S. Patwardhan and John L. Nieber -- Relation Between Hydraulic Conductivity and Drainable Porosity /

J. Cl. Chossat -- Measurement of the Unsaturated Hydraulic Conductivity Function on Long Cores / S. O.

Prasher, M. Kabiri, R. S. Broughton, and N. A. Memon -- Field Wxperience with a Velocity Head Permeameter

Jame S. Roers, J. L. Fouss, and C. E. Carter -- Observations of Water Table Heights and Subsurface Drain Flows

in a Layerred Soil / Chandra A. Madramootoo, J. Gregory Bostock, and Robert S. borughton -- Field Evaluation

of a Subsurface Drainage Simulation Model -- Predicting Peak Flows / B. LeSaffre, and D. Zimmer -- Crop

Response to water management -- Drainage impact on water quality -- Drainage/irrigation control, management,

and evaluation -- Evaluating water management effects, practices, and installations -- Limitations,

performance and machinery delvelopment for mole drainage -- Drainage envelope investigations and specification

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