Irrigation - Rivers Flowing through Mannar Name of River D S/A G A Division Catcheme nt Area in Km Approxim ate Length in Km Duration of Flow in Months Extent Benefited in Ha Volume of Water Consumed in M C M 1 Aruvi AruMusali2,944.0160.00912,432.90221.40 Nanaddan 2 Moderagama AruMusali 931.84 57.609 495.00 6.15 3 Kal AruMusali 209.92 32.003-- 4 Nay Aru Mantai West 560.64 40.004 1,821.15 30.75 5 Pali Aru Mantai West 450.56 56.006-- 6 Parangi aru Mantai West 832.00 68.006 214.50 2.46 7 Chippi Aru Mantai West 66.56 16.004-- There are major seven rivers covering 9113 Km for Gulf of Mannar