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<br />Table C-3.--Comparison of Physical Requirements for Narrows Dam <br />(1970 through 1983) <br /> <br /> Addendum No. 2 Addendum to DPR Authorized <br />Feature to DPR DPR 1976 1973 August 28, 1970 <br />Dam and reservoir <br />(feet) <br />Maximum water surface 4433.3 4448.5 4447 4447 <br />Crest el ev ati on .4440 4454 4453 4453 <br />Height, dam 133 l47 l46 l46 <br />Length, dam 18,000 22,400 22,l20 22,120 <br />Crest width, dam 30 30 30 30 <br />Slurry trench yes yes none none <br />Spillway crest length <br />(feet) <br />Service 50 gated 50 gated lOO gated lOO gated <br />Aux il i ary l,500 750 none none <br />Spillway design <br />capacity (ft3/s) <br />Service 42,500 78,660 27,600 27,600 <br />Aux il i ary 350,000 l55,830 none none <br />Initial reservoir <br />storage capacity <br />(acre-feet) <br />Dead storage 0 0 17,350 l7,350 <br />Inactive 50,000.1; 50,0001; 32,8l0 32,810 <br />Conservati on 373,000 373,000 373,025 373,025 <br />Joint use 0 75,000 75,000 75,000 <br />Flood control 233,000 475,000 475,000 475,000 <br />Surch arge 444,000 636,000 575,373 575,373 <br />Totals l,100,OOO 1,609,000 1,548,558 1,548,558 <br /> ~ :...::.- <br /> ',:: ~. <br />1/ Includes dead and inactive storage. <br /> <br />56 <br />