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<br />The profiles of the St"ndard "roject flood and the <br />Intermediate Regiond Flood cle~end in part upon the d~gree of <br />structural obstruction und clogging that ~ay occur at thu various <br />bridgvs during the flood. Theso factors c~nnot ~e 8cc~rately <br />forec~st, ~nd ..O~B ~logging i~ to bo expscted ~h1ch m~y chang<l <br />e~tir1lotad flood liClits. It ~"s aS3u~od th"t tns brid9~ s~roc_ <br />tures ~ould stand int~ct. <br /> <br />TAeLEIC <br />INTEK~EDIA,E REG10~AL FLOOD <br /> <br />~AXl~UM VELOCiTIES <br /> <br />S~re,,,n <br /> <br />Lo~ation <br />i'1i1e <br /> <br />i'1dxi~"m <br />~h~nn": <br />ft. per "ec. <br /> <br />VA1odti"$ <br />av"r~~nk <br />ft. per "ec. <br /> <br />On the three tributarie~ studied, the differ<ln~e <br />bstw~en the 5t~ndatd Pro~ect rlood and ln~er~ediate Region~l <br />rlood ~"t8r surfacs profilss, along ~~st ~f sach Str8~~, ~v8rages <br />4 to 5 feet on Wild H~rs8.Dry Cr....k, and less than 1 foot on Dry <br />Creek and Goodnight Arroyo. Stage co~pari~ons with historical <br />floode cannot be m~de due to ths l~ck of reliable paat.flaod <br />data on these str..ams. <br /> <br />Wild Kor~~-Dry Cr..~k l.S2 2C.C <br /> 2.55 18.4 <br />DryCroek 0.39 11.6 <br />Coodnight Arroyo 1.66 12.8. <br /> <br />j.3 <br />0.' <br /> <br />,., <br /> <br />Figures 9 through 11 show the heights that would be <br />re~ched by the Standard Proj~cl Flood ~nd the Intsrmediate Ra;ional <br />Flood on select faciliti<lS pres~ntly existing ~1thin th~ flood <br />pI~ins considered in tho ..ludy. <br /> <br />TABL(ll <br /> <br />3TA~DAqD PRO~ECT ,LDDD <br /> <br />VAlod ties. R~.tG~ of Ris~, "no D~r"tion <br />Water velocities during flooQa dspend largtlly u~on <br />th~ ~17R, sh~p~, ~nd elope of the streambed, and the condition <br /> <br />MAXI~U~ VELOCITIES <br /> <br />of tne channei. Ti"oso ("el'H'" V"I.~ el" Jlrr~'.~nt ~b.~~",~ .;"d elt <br /> <br />Stre,,", <br /> <br />Loc~t.1on <br />:~ile <br /> <br />'~~Xi"'~llI <br />Lh~ <br />tt.perssG. <br /> <br />',Je1ociUe. <br />tJvArbM~ <br />;'t. psr ~~c. <br /> <br />different loc~tions ~nd timee on the gem" stream. <br /> <br />Tabhs 10 and 11 eho," the lO"ximu~ velocities thct <br /> <br />~ild Hcree-Dry Cr~"k <br /> <br />1.52 <br />2.55 <br /> <br />23.6 <br />22.7 <br /> <br />,., <br />0.' <br /> <br />would occur in the ~"in ~hann"l ~nd overbank croa~ of ~he rsnchs~ <br /> <br />Dry Cr~ek <br /> <br />0.39 <br /> <br />12.2 <br /> <br />"tudied during the Intar"'sdiate Hegion~l Flood and Sbndcr<l <br />Projscl ,loed, respectively. <br /> <br />GouJnl"htArrDYo <br /> <br />1.6G <br /> <br />13.2 <br /> <br />J.9 <br /> <br />" <br /> <br />T~ble9 12 ~nd 13 show ths tot,l h~ight or rise, the <br />~a.xi,"u~. r~h of do-s, ~nJ th~ dur~tion "b~va b,,"k(~ll st"g" of tl1a <br />Int"rm8di~te R"gio"~l rlood and St~ndord ~rojsct rlood, rs~p"ctivsly, <br />f"r lvpi~",l floar! D1~in s8dions or1 ~h" reacllss studied. <br /> <br />4~ <br />