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<br />. <br /> <br />. <br /> <br />Table 2.--Benefit-cost analysis <br /> <br />Item <br /> <br />Amount <br /> <br />Investment <br />Estimated project cost <br />Less highway improvement (P.L. 87-874) <br />Less, preauthorization investigation <br />Subtota 1 <br />Interest during construction <br />Less highway improvement IDC <br />Net project investment <br /> <br />Annual costs <br />Equivalent of investment II <br />Annua 1 OM&R costs - <br />Total annual costs <br /> <br />Annua 1 benefi ts <br />Irrigation <br />Narrows water supply-direct <br />Narrows water supply-indirect <br />and public <br />Savings in OM&R by irrig. <br />interests <br />Flood control <br />Fish and wildlife enhancement <br />Recreation <br />Total annual benefits <br /> <br />Benefit-cost ratios <br />Direct benefits only <br />Total benefits <br /> <br />139,025,000 <br />-675,000 <br />-1,716,000 <br />136,634,000 <br />12,206,000 <br />-59,000 <br />148,781,000 <br /> <br />5,040,700 <br />817,700 <br />5,858,400 <br /> <br />4,955,400 <br />1,318,400 <br />21,800 <br /> <br />6,295,600 <br />800,000 <br />916,000 <br />2,144,000 <br />10,155,600 <br /> <br />1.50 <br />1. 73 <br /> <br />1/ 100-years at 3~ percent - factor .03388. <br /> <br />21 <br />