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<br />Elccause of this, the C.Ht and west na"sreas .....re consIdered aa two aepsr- <br /> <br />Strudure 8-2 3r""ch <br />Tobte I-A. Sre.1(:hHydro;:r.1pn, no'" and Elevations <br /> <br />"te channels. !.later aurface profiles and flood routings were run sepautely <br /> <br />on each. The main channcL of IIoxelderCreekthrougl\theTo"nof!.lell1ngton <br /> <br />X-Sec. <br /> <br />------ <br /> Water <br /> SIll'farn <br />d. Elev. <br />111,814 5633.2 <br />92,134 5493.2 <br />oi,<l85 5479.7 <br />85,314 5465.9 <br />83.742 5449.8 <br />80,516 5436.8 <br />78,270 5420.9 <br />'" 5408.0 <br />..."'" <br />73,909 5395.2 <br />71,212 5383,7 <br />li8,877 5377.1 <br />65,970 5356.7 <br />64,628 5341.\ <br />62,839 5330.9 <br />61,050 5315.1 <br />59,373 5302.2 <br />57,808 5291.5 <br />5li,354 5215.8 <br />55.571 5263.4 <br />'i';,124 5255.6 <br />'>4,453 5247.2 <br />53,441 5236.6 <br />52.441 ~227 .6 <br />51,300 <br />, <br /> <br />is reatrkt..d tn 8".....r..l phces ",,,using ..xc en flow above channel capacity <br /> <br />.-, <br /> <br />tooverflo" Into thc "cat overflo"sectlon. ThisunconUnedflowladcfined <br /> <br />'" <br /> <br />as shaUowoverland flo". Thceast and "est flows and the mainch2.nne1 aU <br /> <br />0,7 <br /> <br />co..bine aa one flow at crose sectio" 1-.... <br /> <br />"6 <br /> <br />Ih.. breach hydrograph peak flow h not base<! on a fr~,~u"ncy, but rather <br /> <br />~! ~ ~ <br /> <br />on the height of the da... The "",thod uaed to breacl'l the dam 1s o;1ve" in SCS <br /> <br />02' <br /> <br />Iechnical Release No. 66. This Technical R.cleaae describes the development <br /> <br />on <br /> <br />af the breach hydrograph and 1ts routing through the flood pla1n. TheSoll <br /> <br />on <br /> <br />Conaervation Service, Water Surface Profile progra.., WSP-2, was used to rate <br /> <br />on <br /> <br />all crou "ections and thus wster aurface profiles were deternlined as "ell <br /> <br />0" <br /> <br />ass 'Ildthand depth of floodlngar each cross section. This report <br /> <br />". <br /> <br />Include" Index "",ps, cross section location"",p, water surface profile <br /> <br />"8 <br /> <br />plates, aerial photos shawing exrent and depth of flaoding, and two tables <br /> <br />017 <br /> <br />l1stlng cfs flowand..levation for each cros" section. <br /> <br />016 <br /> <br />Ihe floW!l l1sted in Table I-Aandl-lIareesti"",te<! to occur only tf <br /> <br />025 <br /> <br />there 1s an instantaneous breacl'lof lI-2wlth the water aurface Int he <br /> <br />01' <br /> <br />reservolr the sa"" elevarionas the top of d"... <br /> <br />au <br /> <br />", <br /> <br />'" <br /> <br />ow <br /> <br />008 <br /> <br />008 <br /> <br />007 <br /> <br />006 <br /> <br />3 <br />