+-------+-------+---------+-----------+----------- Require- | | | | | ments on | | | | | average of| | | | | Lower | 8,155| 2,564 | 5,591 | 236 | 208 Chenab | | | | | Canal for | | | | | 3 years | | | | | | | | | | Require- | | | | | ments on | | | | | average of| | | | | Upper Bari| 7,619| 2,564 | 5,055 | 261 | 230 Doab Canal| | | | | for 5 | | | | | years | | | | | ----------+-------+-------+---------+-----------+----------- “The 13,063 shown in brackets represents the parts of the available supply which the canals can carry, the capacity being as follows:-- Cusecs. Lower Jhelum Canal 4,563 Upper Jhelum Canal 8,500 ------ Total 13,063 ------ “The average supplies and duty figures are based on the 13,063 cusec maximum capacity and not on the larger available supplies written above these figures where they occur. “The above table goes to show the following: (_i_) In order to utilize the large supplies available in the Jhelum River in October and March every year and in some or all of the intervening months in other years, it is advisable to give the Upper Jhelum Canal the large capacity of 8,500 cusecs proposed. (_ii_) In favourable and ordinary years, that is, in 3 out of 4, the available supply will be ample, as shown by the low duties of 189 and 167 compared with those obtaining on the Lower Chenab and Upper Bari Doab Canals. (_iii_) In dry years, that is, 1 in 4, it will be necessary to attain a duty almost exactly the same as that now obtaining on the Upper Bari Doab Canal. (_iv_) That an exceptionally dry year might occur once in 14 years, when the supply would be 10 per cent. short of that required by the average Upper Bari Doab Canal standard of requirements: such exceptional cases should be met by remissions, which will be far preferable to wasting the good supplies of 13 years out of 14. (_v_) That the occasional occurrence of dry years makes it inadvisable to attempt a greater proportion of rabi than half of the annual irrigation.”