Water Resources Engineering Vol. II Irrigation Engineering & Hydraulic Structures

Author Santosh Kumar Garg
ISBN: 978-81-7409-047-8

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Book Detail
Publication Year	1976
ISBN-13	978-81-7409-047-8
ASIN	81-7409-047-9
Language	English
Edition	38th REVISED EDITION 2023
Pages	1132

Preface
Preface	Irrigation is the science of supplying water to the cultivated land in accordance with the varying requirements of the crops grown therein. Assured irrigation is found to have increased the productivity of unirrigated (rain-fed) land by as much as five times; say from about 0.5 t/ha to about 2.5 t/ha in a tropical country like India, which makes irrigation as an absolute necessity for our country. Although India receives sufficient quantity of about 4000 b.cum of average annual precipitation, resulting in 1869 cum of average annual runoff, yet about 85% of this fresh water supply isreceived in only four monsoon months, whereas water is required throughout the year, necessitating development of sufficient surface as well as underground storages during rainy season for subsequent uses during lean season. Out of the estimated average annual utilizable flow of 1122 b.cum, the present utilization, however, is only about 630 b.cum; (i/c 200 b.cum of ground water) out of which, about 500 b.cum (i.e. about 80%) is being used for irrigation alone. Even with such a huge percentage of the total utilized water being supplied for irrigation, we are just able to irrigate only about 45% of our gross cropped area of 190 Mha, with a created irrigation potential of about 100 Mha, as against the ultimate potential of 140 Mha, which can be developed with ordinary in-basin storages, without involving inter basin water transfers, which may further help in creating an additional irrigation potential of 35 Mha. Besides minimizing the use of irrigation water by adopting canal linings, sprinkler irrigation and micro-irrigation techniques such as drip irrigation on a large scale, additional waters are still required to be developed (stored) for bringing additional cropped area under irrigation to increase our food and fiber production, to fulfill our growing demands for ever increasing population. The techniques which are deployed for construction of an efficiently functioning irrigation system have been lucidly explained in this popular book. Besides covering irrigation in general, the book covers the Design & Construction of Canals and Canal structures, like Barrages, Canal falls, Canal outlets, Cross-drainage works, Bridges and Culverts, etc.; the Storage Reservoirs and Dams have also been extensively covered. Use of groundwater for irrigation, and development of Hydropower have also be dealt in details. The text matter has been further supported with more than 600 Objective Questions, including those from the various competitive examinations. The prestigious UPSC competitions continue to carry questions from this book year after year.

Preface

Preface

Irrigation is the science of supplying water to the cultivated land in accordance with the varying requirements of the crops grown therein. Assured irrigation is found to have increased the productivity of unirrigated (rain-fed) land by as much as five times; say from about 0.5 t/ha to about 2.5 t/ha in a tropical country like India, which makes irrigation as an absolute necessity for our country. Although India receives sufficient quantity of about 4000 b.cum of average annual precipitation, resulting in 1869 cum of average annual runoff, yet about 85% of this fresh water supply isreceived in only four monsoon months, whereas water is required throughout the year, necessitating development of sufficient surface as well as underground storages during rainy season for subsequent uses during lean season. Out of the estimated average annual utilizable flow of 1122 b.cum, the present utilization, however, is only about 630 b.cum; (i/c 200 b.cum of ground water) out of which, about 500 b.cum (i.e. about 80%) is being used for irrigation alone. Even with such a huge percentage of the total utilized water being supplied for irrigation, we are just able to irrigate only about 45% of our gross cropped area of 190 Mha, with a created irrigation potential of about 100 Mha, as against the ultimate potential of 140 Mha, which can be developed with ordinary in-basin storages, without involving inter basin water transfers, which may further help in creating an additional irrigation potential of 35 Mha. Besides minimizing the use of irrigation water by adopting canal linings, sprinkler irrigation and micro-irrigation techniques such as drip irrigation on a large scale, additional waters are still required to be developed (stored) for bringing additional cropped area under irrigation to increase our food and fiber production, to fulfill our growing demands for ever increasing population. The techniques which are deployed for construction of an efficiently functioning irrigation system have been lucidly explained in this popular book. Besides covering irrigation in general, the book covers the Design & Construction of Canals and Canal structures, like Barrages, Canal falls, Canal outlets, Cross-drainage works, Bridges and Culverts, etc.; the Storage Reservoirs and Dams have also been extensively covered. Use of groundwater for irrigation, and development of Hydropower have also be dealt in details. The text matter has been further supported with more than 600 Objective Questions, including those from the various competitive examinations. The prestigious UPSC competitions continue to carry questions from this book year after year.

Table of Contents
Table of Contents	* Irrigation Techniques and Quality of Irrigation Water * Water Requirements of Crops * Canal Irrigation System * Sediment Transport and Design of Irrigation Channels * Lining of Irrigation Canals and Economics of Lining * Reclamation of Water-logged and Saline Soils for Agricultural Purposes * Irrigation Revenue Rates * Rivers, their Behaviour, Control and Training * Diversion Head Works * Hydraulic Jump and its Usefulness in the Design of Irrigation Structures * Theories of Seepage and Design of Weirs and Barrages * Canal Falls * Regulators, Modules and Miscellaneous Canal Structure * Cross Drainage Works * Construction of Culverts and Small Road Bridges across Drains and Canals * River Navigation * Dams in General and a few Dams in Particular * Reservoirs and Planning for Dam Reservoirs * Design and Construction of Gravity Dams * Earthen Dams and Rock fill Dams * Spillways, Energy Dissipators, and Spillway Gates * Outlet Works through Dams and River Intakes * Pressure Conduits * Hydro-electric Power * River Navigation * Tank Irrigation * Arch and Buttress Dams * Chapter wise Multi choice Objective Questions * Objective Questions of the Engineering Services Exams upto the Year 2016 * Conventional Questions of the Civil Services Exams upto the year 2018 * Conventional Questions of the Engineering Services Exams upto the year 2018, giving the syllabus (Revised w.e.f the year 2017) * Appendix Table A-I to Table A-IX * Bibliography * Index

Table of Contents

Table of Contents

* Irrigation Techniques and Quality of Irrigation Water * Water Requirements of Crops * Canal Irrigation System * Sediment Transport and Design of Irrigation Channels * Lining of Irrigation Canals and Economics of Lining * Reclamation of Water-logged and Saline Soils for Agricultural Purposes * Irrigation Revenue Rates * Rivers, their Behaviour, Control and Training * Diversion Head Works * Hydraulic Jump and its Usefulness in the Design of Irrigation Structures * Theories of Seepage and Design of Weirs and Barrages * Canal Falls * Regulators, Modules and Miscellaneous Canal Structure * Cross Drainage Works * Construction of Culverts and Small Road Bridges across Drains and Canals * River Navigation * Dams in General and a few Dams in Particular * Reservoirs and Planning for Dam Reservoirs * Design and Construction of Gravity Dams * Earthen Dams and Rock fill Dams * Spillways, Energy Dissipators, and Spillway Gates * Outlet Works through Dams and River Intakes * Pressure Conduits * Hydro-electric Power * River Navigation * Tank Irrigation * Arch and Buttress Dams * Chapter wise Multi choice Objective Questions * Objective Questions of the Engineering Services Exams upto the Year 2016 * Conventional Questions of the Civil Services Exams upto the year 2018 * Conventional Questions of the Engineering Services Exams upto the year 2018, giving the syllabus (Revised w.e.f the year 2017) * Appendix Table A-I to Table A-IX * Bibliography * Index

Water Resources Engineering Vol. II Irrigation Engineering & Hydraulic Structures

₹ 829.00