Laserfiche WebLink
<br />SOURCES OF DATA <br /> <br />T~anapo~tation facilities in the area of study include <br />Inte~9tate Highway 25, U.S. Highway 160, Colorado State Highway <br />10 and 69, numeroua county ~oads and city streets and the COlorado <br />& Southern Railroad. <br />The population of Huerfano County has been declining since <br />the 1920's when coal production began to decline. The 1960 popula- <br />tion of Huerfano County was 7,867 and by 1970 it had declined to <br />6,590. walsenburg's population in 1960 was 5,071 and had deClined <br />to 4,329 in 1970. A recent Existing Land Use Inventory for Huerfano~ <br />Las Animas Counties repo~ts the population trend will continue to de~ <br />cline through 1980. <br /> <br />Topogr<>phicallIIa.l>sof the study ared_re compiled by <br />photogriU'llmetric ",ethods frOltl aerial photographs taken in November <br />1975. These maps have a >;oale af 1" ~ 400' and a contour interval <br />of 2 feet. Ae~lal photos were taken by Scharf & Associates, Denver, <br />Colorado. ControL topoqrapJ,y, drafting and reproduction was by <br />Nelson,Haley,PattersondndQuirk,Inc.,Gree1ey,COlorado. <br />Structural dnd elevation. data of bridges and culverts were <br />obt8tned during vi~its to the community. Cro~" sections wero ctovel- <br />opedand!ar supplerncntad using in!arrnatlonobtlllnud tnth" fiul<.lo r <br />~cal"d from topographic lfldpS. seventy-four cross ""ctio"s were uS<.1d <br />to develop data for this report. Plates 17 and 18 show typical cross <br />sections used, 10Cdtions of the cross sections are shown on the flood <br />profile plates. Cross sections not appearing 1n this report are not <br />in reproducible form, but are available in the District Office for <br />inspection. <br />HydraUlic comput.-l.tiona were accomplished utilizing the <br />September 1971 version of the Hydroloqic Engineering Center Computer <br />}OrOgrdlll, upddted in Janu=y 197f>. Th"..t..rt.ing....tersurfa"celova- <br />tion for the Cueharas River wall obtained by the "slope iir..,," mcthod, <br />boginntngllt tha downstrearn end of the lloudy area. <br />Alle1evationllusadinth1sreportllrelllea"uradlr"",U.S. <br />Co"st and Gcodetic Survey 1929 mean sea lev"l (msl)d"tum. Toasslst <br />report users in locating act.ual flood boundaries or for determininq <br />the elevations of looal strucoures in reldoion to flood elevdtion~, <br />a tabulation of elevation reference Marks is shown on Plate 9. <br /> <br />[)"t... ""v.,luf'e<l in tl.., :pt..p.:;.~...t1on of thi" rOp<lrt ic 0'-' <br />fil" in the Office of the Albuquerque District, U.S. Army Corps of <br />Engineerg, P.O. BoX 158D, Albuquerque, New Maxico and will be re- <br />tained for future reference. <br /> <br />" <br /> <br />, <br />