Hydraulic Design in Water Resources Engineering: Land Drainage: Proceedings of the 2nd International Conference, Southampton University, U.K. April 1986

Front Matter....Pages i-x
Land Drainage: Art, Skill, Science, or Technology?....Pages 1-8
The Modelling of a Drainage System in the River Valley with Ground Water Under Pressure....Pages 11-19
The Effect of Drainage Works within the Turu-Lung Somes-Barcau Zone....Pages 21-26
Surface and Subsurface Drainage Projects Achieved in Stages....Pages 27-33
New Drainage Formulas Considering Delayed Gravity Response and Evaporation from Shallow Water Table....Pages 35-47
Unsteady State Condition Drainage of Sloping Land Theoretical and Experimental Results Concerning the Raising of Water Table Depletion Curve....Pages 49-62
Methods for Estimating the Evaporation from Shallow Water Table in Drainage Design Formulas....Pages 63-73
Tubewell-Spacing Formulas for Subsurface Drainage....Pages 75-84
Area Reduction Factors for Land Drainage Design in Flat Basins in Moderate Temperate Climates....Pages 87-99
An Integrated Surface and Groundwater Flow Model for the Design and Operation of Drainage Systems....Pages 101-108
Application of the Hydrological Model GRODRA for the Design of a Water Management System in the Land Consolidation Project Giethoorn-Wanneperveen....Pages 109-117
CALDRA: A Software Package for Drainage Design....Pages 119-128
The Controller of Pumping Aggregates in Draining Pumping Stations in Poland....Pages 129-132
A Method of Flood Routing in Ungauged Catchments with Particular Reference to Proposed Changes. A Case Study....Pages 133-145
Design Study Main Drainage System Markerwaard....Pages 147-157
Land Drainage and Flood Prevention in the Central Somerset Lowlands with Particular Reference to the South Drain Scheme Stage III....Pages 159-168
Integrated Drainage Systems for an Alluvial Wet Land — A Case Study....Pages 169-178
Development of Lahore at West Bank of Ravi....Pages 179-188
The Effects of Artificial Subsurface Drainage on Flood Discharge....Pages 189-198
Flood Protection and Drainage of the East and West Fens Hydrology....Pages 199-212
Flood Protection and Drainage of the East and West Fens Unsteady Flow Modelling Studies....Pages 213-220
Flood Protection and Drainage of the East and West Fens Engineering and Economics....Pages 221-232
Effect of Subsurface Drain Discharge on Streamflow....Pages 233-242
Development of the Lower Mono River Valley, West Africa: A Case Study....Pages 243-258
Moisture Excess Removal from the Saucers in the North-Bucharest Area....Pages 259-267
The Hydraulic Characteristics of Hinged Flap Gates....Pages 271-280
Laboratory Experiments on the Flow Resistance of Aquatic Weeds....Pages 281-291
Diffusion of the Sluice Way Jet....Pages 293-303
Regime Approach to the Design of Drainage Channels....Pages 305-314
Sediment Transport in Circular and Non-Circular Conduits....Pages 315-324
On the Hydraulics of Corrugated PVC Drains with Different Clogging Degrees....Pages 325-340
Open Drain Bank Stabilization Before and After Construction....Pages 341-351
Unsteady Flow Computations in Open Channel Hydraulics....Pages 353-362
The Influence of Salts on Physical Properties of Soils....Pages 365-371
Methods for Estimating the Drainable Porosity in Nonsteady Drainage Formulas....Pages 373-382
Crop Production and Topsoil/Surfacewater Salinity in Farmers’ Irrigated Rice Fields, the Nile Delta....Pages 383-392
Improvement of Drainage in Loamy Soil by Subsoiling....Pages 393-402
Movement of Salt During the Cropping Cycle in Drained and Undrained Coastal Marshes of the U.K.....Pages 403-411
Impermeable Soils Require Stable Channels and Good Crack Formation for Effective Drainage....Pages 413-422
The Effect of Soil Physical Changes Introduced by Mole Drainage and Cultivation on the Removal of Rainfall....Pages 423-432
The Breakdown of Field Drainage Systems due to Deflocculation in the Coastal Marshes of England. The Extent of the Problem and Possible Remedies....Pages 433-442
Extension of Mole Drainage Practices....Pages 443-453
Nitrate in Water Draining from Arable Land Under Autumn Sown Crops and the Influence of Cultivation....Pages 457-464
The Reduction of the Effects on Flora Caused by Drainage Water Quality by a Proposed Reservoir as an Element of a Feedbacksystem....Pages 465-473
Simple Hydrated Lime Plants for Treatment of Ferrous Rich Drainage Water....Pages 475-486
Disposal of Saline Drainage Water and Storm Discharge from Left Bank Outfall Drain, Pakistan....Pages 487-496
Drainage Water Quality....Pages 497-506
Effect of Saline Water on the Effluent from Gypsiferous Soils....Pages 507-515
Plant Nutrient Losses in Drainage Water on Heavy Clay Soil....Pages 517-523
Technical Economic Criteria and Efficient Drainage System Design When Using Different Filter Materials....Pages 525-534
Stabilization or Prevention of Wet Landslips by Drainage....Pages 535-544
Drainage Problems in Areas Subject to Subsidence due to Oil Production....Pages 545-554
The Economical Evaluation in the Design of Main Drainage Systems....Pages 557-575
An Economic Argument for a Sub-Optimal Engineering Design for the Drainage of Clay Soils....Pages 577-587
Drainage Benefits to Land Workability....Pages 589-598