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ECONOMIC INDICATORS OF WATER DELIVERIES IIOO '" 105 ~ 1000 950 900 850 800 Construction Costs 75 700 650 600 ~ 550 ::l ;:: ~ 500 45 N ~ ~ 40 ~ ;! 350 300 OJ ...J s: !:: 250 '" M <I: N 200 U ;;; ;;; :l N N Cl. 150 Cl. <I: 100 ,.. ~ ~ ~ 0 1; ~ :l :l 50 Z .. 2 3 4 5 6 7 8. 8b 10 11 12 13. I3b . 9 ~ '. ~ Economic Indicators of Water Deliveries Two economic criteria which indicate the associated costs and benefits of water supply alternatives are the net annual economic benefits generated per acre. foot of water delivered, and project construction costs per acre. foot of water delivered, A third mane. tary criterion, internal rate of return, is obtained by dividing the net annual economic benefits hy construction costs. Greater net annual economic benefits per acre.foot are associated with municipal and industrial water use and hydroelectric power, Alterna. tives 2, 3, 10 and 11. 14 Net annual economic benefits per acre.foot of water delivered are smal. lest for those alternatives associated primarily with agriculture. Alterna. tives 7, 8, 12 and 13, Net annual eco. nomic benefits range from -$4,7 million. Alternative 13a, to $38,3 mil. lion. Alternative 10. Net annual eco. nomic benefits are relatively small for Alternative 7 and 8a, because Alterna' tive 7 develops very little water and Alternative 8a requires construction and operation of new water convey- ance facilities, Because there are no construction costs for Alternative L the internal rate of return cannot be calculated for this alternative, The greatest internal rate of return would be for Alternative 3 and Alternative 10, both of which include a hydroelectric power component.