03798nas a2200253 a 450000500170000000800410001703500150005810000270007324501790010026000670027930000540034649000270040050001420042750200590056952025080062865000600313670000410319670000450323770000490328271000530333171000350338481000590341985600660347820260817172130.0180704s2016    th uu m rtt   0|  a1eng d  a.b122037741 aSaleem, Muhammad Yasir10aCanal lining impact on water availability, distribution and crop water requirements :ba case study of the Dijkot distributary system of lower Chenab Canal Punjab in Pakistan  aPathum Thani, Thailand :bAsian Institute of Technology,c2016  a1 online resource (80 leaves) :bill. (some col.)1 aThesis ;vno. WM-16-31  aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Water Engineering and Management  aThesis (M. Eng.) - Asian Institute of Technology, 2016  aThe Lower Chenab Canal is a perennial canal, which conveys water from Chenab River to the fields through the networks of main canals, branches, distributaries, minors and water courses. Conveyance of water from canals to the fields is done through outlets, which take off mainly  from distributaries and minors. The  Lower Chenab Canal is already more than century old and it has been facing a number of problems. There has been increase in water demand with the increase in cropping intensity over the years. There has been deterioration of canal banks and berms due to excessive discharges above the safe operational capacities. On the other hand, shortage of irrigation supplies was faced due to less water availability, particularly  in  tail  reaches  due  to  inefficient  conveyance  system.  Almost  all  the  irrigation canals in Punjab province are unlined and thus there isa large amount of water loss through the canals. Concrete Lining of distributaries and minors is being carried out to reduce conveyance losses in  irrigation  network  to  increase  water  availability  at  the  farm  gate  for  farmers.  Equitable distribution of water in accordance to the assigned share of water is necessary to fulfill water demands  at  every  scale.  Collaboration  of  agency  and  farmer  organizations  is  essential  to minimize  water  theft  and  partial  distribution  of water.  Small  farmers  must  be  engaged  on merit in establishing farmer organizations so that water delivery is assured to farmer. Concrete lining of Dijkot distributary system has improved the capacity of channel and off taking minors. The ability of lined distributary has enhanced in terms of water delivery and sharing among the minors. Tail water supply has increased up to a significant limit but still tail end users are short of their required amount of water. In comparison to earthen channel, water delivery at the tail has increased more than twice. Partial distribution of water even after concrete lining of irrigation network is providing less water than the essential amount of water required for proper crop growth specifically to the tail reaches of distributary and minors. Crop production is suffering in this area due to short supply of water. Fair distribution of water should be made possible to the irrigators to fulfill their water demands and strict laws and their regulations are prerequisite to minimize water theft by irrigators and unfair distribution of water by farmer organizations. 0aCropsxWater requirementszPakistanxLower Chenab Canal0 aTawatchai Tingsanchali,eChairperson1 aShrestha, Sangam,eExamination Committee1 aAndriyas, Sanyogita,eExamination Committee 2 aPunjab Irrigation Department,eScholarship Donor2 aWorld Bank,eScholarship Donor2 aAsian Institute of Technology.tThesis ;vno. WM-16-31  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B04440