Land Drainage

Contents: Part I: Field Drainage:  1. Development, importance and future of drainage. 2. Benefits of drainage. 3. Relation of soil to drainage. 4. Relation of soil water to drainage. 5. Types of drains and their location. 6. Materials for covered drains. 7. Depth and frequency of tiles. 8. Measurement of drainage water. 9. Size and grade for tiles. 10. Construction of underdrains. 11. Costs and profits of tile drainage. 12. Development of wetland. Part II: District Drainage: 13. Drainage districts and drainage laws. 14. Assessments of drainage benefits and costs. 15. Large tiles vs. open ditches. 16. Design, construction and maintenance of open ditches. 17. Flood control. 18. Estimates of costs of large drainage systems. Part III: Special Drainage Problems: 19. The drainage of tidal and overflowed marsh lands. 20. The drainage of irrigated lands. 21. Drainage by means of pumping from wells. 22. Prevention and control of erosion, with special reference to terracing. 23. Miscellaneous drainage problems. Part IV: Drainage Surveying: 24. Drainage surveying and practice. Appendix.

In the present book ‘Land Drainage’ the subject has been developed largely as a matter of applied soil physics. Drainage is considered herein as a means of reclaiming additional areas and making of wet lands more productive. Reclamation of arid and wet lands affords the chief means of increasing our food producing areas and drawing a greater proportion of our population into the rural areas. The whole subject matter has been divided into 24 chapters and 4 parts which includes field drainage, district drainage, special drainage problems and drainage surveying. Review questions, general references and laboratory exercises have also been included. The book will be useful not only for students and teachers but also for soil scientists, agronomist, agricultural engineers, environmentalist and extension workers.