Land Drainage: Art; Skill, Science, or Technology? -- Section 1. Design of Field Drainage Systems -- The Modelling of a Drainage System in the River Valley with Ground Water Under Pressure -- The Effect of Drainage Works within the Turu-Lung Somes-Barcau Zone -- Surface and Subsurface Drainage Projects Achieved in Stages -- New Drainage Formulas Considering Delayed Gravity Response and Evaporation from Shallow Water Table -- Unsteady State Condition Drainage of Sloping Land Theoretical and Experimental Results Concerning the Raising of Water Table Depletion Curve -- Methods for Estimating the Evaporation from Shallow Water Table in Drainage Design Formulas -- Tubewell-Spacing Formulas for Subsurface Drainage -- Section 2. Main Drainage and Flood Control -- Area Reduction Factors for Land Drainage Design in Flat Basins in Moderate Temperate Climates -- An Integrated Surface and Groundwater Flow Model for the Design and Operation of Drainage Systems -- Application of the Hydrological Model GRODRA for the Design of a Water Management System in the Land Consolidation Project Giethoorn-Wanneperveen -- CALDRA: A Software Package for Drainage Design -- The Controller of Pumping Aggregates in Draining Pumping Stations in Poland -- A Method of Flood Routing in Ungauge 1 Catchments with Particular Reference to Proposed Changes. A Case Study -- Design Study Main Drainage System Markerwaard -- Land Drainage and Flood Prevention in the Central Somerset Lowlands with Particular Reference to the South Drain Scheme Stage III -- Integrated Drainage Systems for an Alluvial Wet Land - A Case Study -- Development of Lahore at West Bank of Ravi -- The Effects of Artificial Subsurface Drainage on Flood Discharge -- Flood Protection and Drainage of the East and West Fens Hydrology -- Flood Protection and Drainage of the East and West Fens Unsteady Flow Modelling Studies -- Flood Protection and Drainage of the East and West Fens Engineering and Economics -- Effect of Subsurface Drain Discharge on Streamflow -- Development of the Lower Mono River Valley, West Africa: A Case Study -- Moisture Excess Removal from the Saucers in the North-Bucharest Area -- Section 3. Hydraulic Aspects of Drainage Design -- The Hydraulic Characteristics of Hinged Flap Gates -- Laboratory Experiments on the Flow Resistance of Aquatic Weeds -- Diffusion of the Sluice Way Jet -- Regime Approach to the Design of Drainage Channels -- Sediment Transport in Circular and Non-Circular Conduits -- On the Hydraulics of Corrugated PVC Drains with Different Clogging Degrees -- Open Drain Bank Stabilization Before and After Construction -- Unsteady Flow Computations in Open Channel Hydraulics -- Section 4. Influence of Drainage on Soils -- The Influence of Salts on Physical Properties of Soils -- Methods for Estimating the Drainable Porosity in Nonsteady Drainage Formulas -- Crop Production and Topsoil/Surfacewater Salinity in Farmers' Irrigated Rice Fields, the Nile Delta -- Improvement of Drainage in Loamy Soil by Subsoiling -- Movement of Salt During the Cropping Cycle in Drained and Undrained Coastal Marshes of the U. K. -- Impermeable Soils Require Stable Channels and Good Crack Formation for Effective Drainage -- The Effect of Soil Physical Changes Introduced by Mole Drainage and Cultivation on the Removal of Rainfall -- The Breakdown of Field Drainage Systems due to Deflocculation in the Coastal Marshes of England The Extent of the Problem and Possible Remedies -- Extension of Mole Drainage Practices -- Section 5. Influence of Drainage on Water Quality and the Environment -- Nitrate in Water Draining from Arable Land Under Autumn Sown Crops and the Influence of Cultivation -- The Reduction of the Effects on Flora Caused by Drainage Water Quality by a Proposed Reservoir as an Element of a Feedbacksystem -- Simple Hydrated Lime Plants for Treatment of Ferrous Rich Drainage Water -- Disposal of Saline Drainage Water and Storm Discharge from Left Bank Outfall Drain, Pakistan -- Drainage Water Quality -- Effect of Saline Water on the Effluent from Gypsiferous Soils -- Plant Nutrient Losses in Drainage Water on Heavy Clay Soil -- Technical Economic Criteria and Efficient Drainage System Design When Using Different Filter Materials -- Stabilization or Prevention of Wet Landslips by Drainage -- Drainage Problems in Areas Subject to Subsidence due to Oil Production -- Section 6. Drainage Economics -- The Economical Evaluation in the Design of Main Drainage Systems -- An Economic Argument for a Sub-Optimal Engineering Design for the Drainage of Clay Soils -- Drainage Benefits to Land Workability.