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<br />THE WEILAND ENGINEERiNG CO. <br />DENVER. PUEBLO. CANON CITY <br /> <br />SUBJECT <br /> <br />FLORENCE FLOOD PROTECTION <br /> <br />IIXHI.,T <br /> <br />filled while the outlet was disc:hargin[: at the rate of 5000 cubic feet <br /> <br />per second. <br /> <br />On t;1is connection if Vie cor.sid€'r Ih,OOO cu.ft. per secon,1, the estimated <br /> <br />amount flowing' in Sand Creek. at its peak on July 16, 1923, pouring into the <br /> <br />reservoir it v!ill 1.ake 1 hot;r and 44 mir:u1.es to flll it should there be no <br /> <br />v:ater passin<; tilr(>c;gh the outlet tUlle. '::itn the o1.<tle1. tube discharging <br /> <br />continually during the time it is being filled the time before the waters <br /> <br />will overflow the spillway would be well over t-wo hours. As the peak of <br /> <br />the Jul,y 16th flow v.as not over :,0 minutes ot the most this gives a very <br /> <br />comfortable margin of safety. '::i tll the :reservoir fl.,-ll it will t~ke, as <br /> <br />shown l'y the com'9u t5 tions be low, 6 hoc;rs and 15 minu tea to empty it. <br /> <br />':'his period of 1.ime should e'ive 1.he reservoir a chance to emptJ' itself be- <br /> <br />fore the Cirrival of tile wate:rs 01' another severe storm directly following. <br /> <br />TABLE ClVl )TC ~'l ).G~ PJ;;;J1'IRED TO E,~P'l'Y !'ESERVOlR <br /> <br />Eleva t1 on <br /> <br />Av. Area of' layers <br /> <br />Head Velocity <br />f.t .per sec <br /> <br />D1sch~rge Time <br />cu.ft per see <br /> <br />5261 6,351,701.4 sq.ft. 43 .31.6 5072 2505 sec. <br />5259 5,699,826 " 41 30.9 4959 22S'9 sec. <br />5257 5,144,672 .. 39 30.1 4631 2130 sec. <br />5255 4,589,917 " 37 29.3 4703 1952 sec. <br />5253 4,034,963 " 35 28.5 4574 1764 sec. <br />5251 3,41:0,008 " 33 27.'1 4446 1565 sec. <br />5245 2,10 1,552 " 2'1 25.0 4013 5237 sec. <br />523.5 679,912 " 1'1 19.9 3194 2755 sec" <br />5225 438,867 " '7 12.7 2038 2153 see.. <br />5219 59,241.6 sq.ft. 1 4.6 '770 154 sec. <br /> 22,514 see.. <br /> or <br /> 6 lIrs. 15 min.. <br /> <br />}; <br />