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<br />c. During the formulation of a potential plan of improve- <br />Ment, interest rates increased from 3.250 percent to 5.375 percent, <br />and an interest rate of 7.000 percent is probable. Construction <br />costs ~ave risen during the same period. Economic benefits and <br />costs for the seven reservoir sites ~iven detailed consideration <br />are shown in table~. To illustrate the effect of changes in <br />interest rates on these projects, annual benefits and costs are <br />given for 3.250, 5.375, and 7.000 percent interest rates with <br />and without the authorized Narrows Reservoir in operation. <br /> <br />Reservoir <br />-- <br /> <br />Agate <br /> <br />East Bi.1ou <br />Creek <br /> <br />'-tictdle <br />Bijou Cr. <br />-!IA" <br /> <br />r~idJlc <br />Ili.lou Cr. <br />"':"8" <br /> <br />j"!wJ.dy Cr. <br /> <br />\Vest Bijou <br />Cr. _"Al! <br /> <br />\Vest Ilijou <br />Cr. -!"B!I <br /> <br />Table 9 <br />CO~WARISON OF BENEFITS AND COSTS <br />BIJOU CREEK IlASIN RESERVOIRS <br /> <br />Interest <br />Rate With <br />in Annual <br />Percent Benefits <br />-- ---- <br /> <br />3.250 <br />5.375 <br />7.000 <br /> <br />3.250 <br />5.375 <br />7.000 <br /> <br />3.250 <br />5.375 <br />7.000 <br /> <br />3.250 <br />5.375 <br />7.000 <br /> <br />3.250 <br />5.375 <br />7.000 <br /> <br />3.250 <br />5.375 <br />7.000 <br /> <br />3.250 <br />5.375 <br />7.000 <br /> <br />$ <br /> <br />276,200 $ <br />261,400 <br />254,400 <br /> <br />1,712,700 <br />1,634,300 <br />l,589,800 <br /> <br />300,500 <br />285,300 <br />277 ,lOO <br /> <br />300.500 <br />285,300 <br />277,lOO <br /> <br />267,300 <br />254,300 <br />247,lOO <br /> <br />619,500 <br />590,700 <br />574,600 <br /> <br />619,500 <br />590,700 <br />574,600 <br /> <br />Na.rrows <br />Annual <br />Costs <br /> <br />379,300 <br />562,700 <br />713,900 <br /> <br />l,078,000 <br />1 ,663 ,100 <br />2,139,400 <br /> <br />B/C <br />Ratio <br /> <br />0.7 <br />0.5 <br />0.4 <br /> <br />1.6 <br />0.98 <br />0.7 <br /> <br />341,900 0.9 <br />507,700 0.6 <br />641',200 0.4 <br /> <br />408,300 0.7 <br />591,800 0.5 <br />742,900 0.4 <br /> <br />388,500 <br />571,800 <br />722,600 <br /> <br />597,200 <br />905,lOO <br />l,161,800 <br /> <br />3l6,800 <br />453,000 <br />566,<100 <br /> <br />26 <br /> <br />0.7 <br />0.4 <br />0.3 <br /> <br />1.04 <br />0.7 <br />0.5 <br /> <br />2.0 <br />1.3 <br />1.0l <br /> <br />Without <br />Annual <br />Ilenefits <br /> <br />.$ <br /> <br />230,200 $ <br />217 ,400 <br />210,700 <br /> <br />1,l37,500 <br />1,083,200 <br />l,052,800 <br /> <br />230,500 <br />203,200 <br />211 ,700 <br /> <br />230,500 <br />203,200 <br />211,700 <br /> <br />195,700 <br />l85,700 <br />lBo,300 <br /> <br />419,100 <br />398,700 <br />387,500 <br /> <br />4l<1,100 <br />31)[\ ,700 <br />387,500 <br /> <br />Narrows <br />Annual <br />Costs <br /> <br />379,300 <br />562,700 <br />713,900 <br /> <br />1,078,000 <br />1,663,100 <br />2,139,400 <br /> <br />341,900 0.7 <br />507,700 0.1, <br />61,4 ,200 0 . 3 <br /> <br />B/C <br />Ratio <br /> <br />0.6 <br />0.4 <br />0.3 <br /> <br />l.l <br />0.7 <br />0.5 <br /> <br />408,300 0.6 <br />59l,800 0.3 <br />71'2,900 0.3 <br /> <br />388,500 <br />571,Roo <br />722,600 <br /> <br />597,200 <br />905,100 <br />1,l61,800 <br /> <br />3l6,800 <br />453,000 <br />566,900 <br /> <br />0.5 <br />0.3 <br />0.2 <br /> <br />0.7 <br />0.4 <br />0.3 <br /> <br />1.3 <br />0.9 <br />0.7 <br />