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<br />( <br /> <br />1977-78 PUEBLO, COLO. FIS <br />Wnd Horse - (Dry Creek West) <br /> <br />November 1977 <br /> <br />1. The Wild Horse <br />was revised to: <br /> <br />Dr)r Creek (West) portion of the 1972 Pueblo, CO FIS <br /> <br />(1) Add a 10-, 50-" and 500-year flood plain and profile and delete the <br />SPF flood plain and profiles. <br /> <br />(2) Compute hydrauJ,ics for the new bridge built at 18th Street. <br /> <br />(3) Compute hydrauJ,ics for the new subdevelopment located on the northwest <br />side of the intersection of Wild Horse - Dry Creek (West) and the D&RGW RR. <br /> <br />1 A. Summary of HEC-2 Computer Runs. <br /> <br /> Wl X-Sec 0.9 to 6.1 Contains old 18th Str. Br. 5.9 to 6.1 <br /> WlA " 0.9 to 2.11 Flow restricted to channel <br /> WlB " 2.11 to 6.1 Flow right of levee <br /> W2 " 5.0 to 6.2 New 18th Str. Br. & transition <br /> W3 " 6.2 to 7.6 For 100, 50, 10-yr flows <br />( W3A " " " For 500-yr flood <br />TS 364-73 " 5.0 6.2 18th Str. Br. used in TS 364-73 & transition <br /> <br />2. Noted on maps as Dry Creek. <br />Dry Creek east is located east <br />on the USGS quadrangle maps. <br /> <br />Dry Creek summary sheet is ror Dry Creek east. <br />of Pueblo, west of Fearno.~ille and is unnamed <br /> <br />3. Data are available from the following sources: <br />Month Year Item <br /> <br />Oct <br /> <br />71 <br /> <br />Flood plains & profiles on 1" = 1000' enlarged <br />quadrangle map. <br />HEC-2 water surface profiles and card decks. Back-up <br />data in "Pueblo, Tributaries to Fountain Cr" book. <br />TS 364-73 letter evaluating proposed 18th Street bridge <br />and related channel improvements. Recommended 1 on 3 <br />side slopes with 12.50 transition to vertical. Back~up <br />'~ard deck for TS 364-73 (rerun in Oct 77) ,The, '-, I t.7 ,,<J ho t <br />, 8' h..II(1 +r.c 11tJ,f' by,~ly~ <br />.four back\fater runs for 1 th Street br1dge:"",,,.,"! t, "''''73 /'''' <br />1. One on three transition - 172 ft span _ (possible f <br />omission of ground line points). <br />:2. One on three channel improvement with 12.50 transition <br />to vertical (Valid run) wingwall under bridge. <br />3. Similar to run #2 except for changes after X-sec 5. <br />I+. Old cross sections and bridge. <br />18th Street bridge plans used to make the evaluation are <br />not available in-house. <br /> <br />" <br /> <br />" <br /> <br />Apr <br /> <br />73 <br /> <br />" <br /> <br />" <br /> <br />( .. <br /> <br />? <br /> <br />73 <br /> <br /> <br />'-j', <br /> <br /><,,~- <br /> <br />" <br />