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<br />I <br /> <br />'I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />North St. Vrain & St. Vrain Creeks <br />Floodplain Upda/e <br /> <br />Town of Lyons <br /> <br />TABLE7A <br />NORTH ST. VRAIN - ST. VRAIN CREEK BENCHMARK INFORMATION <br /> <br />BM NAME BRW EL. MGVD 29 DESCRIPTION LOCATION <br /> PUBLISHED <br /> EL. <br />SVC9 5404.20 5404.20 Brass Cap near Southeast corner Northwest Wingwall of Bridge <br /> of Bridge at Highway 36 and over N. St. Vrain Creek, on <br /> Apple Valley Road Intersection. Highway 38/State Highway 66. <br />BRIDGE 5375.84 -- 3" Brass Cap Stamped: "D 15 N Northwest Wing Wall of Bridge <br /> CDOH Benchmark STA EL" over No. St. V rain Creek, on <br /> Highway 36/State Highway 66. <br />RMl 5367.68 5367.54 3.5" Brass Cap Stamped: US 71' North of Intersection of 5 <br /> Dept. of Interior Geological Ave. & Main St., along West <br /> Survey 5375 Re-Set 1968" Curb of 5" Ave. <br />SVCI0 5342.75 5342.79 3"Brass Cap Stamped: "u.s. Northwest corner of Bridge <br /> Bureau of Public Roads 1955 Curb on 5th Ave. and N. St. Vrain <br /> 5342.24" Creek. <br />BMl 5335.61 -- Chiseled Square East End of East End of Retaining Wall on <br /> Retaining Wall South Side of Evans, East of 4'" <br /> Ave. <br />BM2 5334.44 -- Chiseled Square on Top of Northwest corner of Evans St. <br /> Concrete Headwall and 3rd Ave. <br />BM3 5322.59 -- Chiseled Square on Top of Northeast corner of Sidewalk <br /> Sidewalk (close to Tele. Ped.) 84' So. Of <br /> Evans, on 2nd Ave. <br />BM4 5316.91 -- Chiseled Square on Top of Inlet North of Intersection of Park <br /> Ave. & Highway 36. West of <br /> Black Bear Inn. <br />CLIFF 5305.96 5306.22 3.5" Brass Cap Stamped: "NGS East side of Highway 36, <br /> A411 1984" opposite of Headgate, 5' High <br /> on Vertical Cliff. <br />HEADGATE 5305.28 5305.56 Brass Cap Stamped: "Bureau of Southeast end of a Wingwall of a <br /> Reclamation BM 753033241936" Headgate of an Irrigation CanaL <br />GAGING 5296.65 -- 3.75" Brass Cap Stamped: US Gaging Station on Highway 36 <br />STATION Geological Survey Gaging <br /> Station Reference Mark" <br />2410 5266.73 -- OS' Rounded Rod in Range Box South side of US Hwy 66/CO <br /> Stamped: "24101984" Hwy 36, 200' :!: West of the <br /> Intersection of US Hwy 66/CO <br /> Hwv 36. <br />A329 5241.28 5241.22 3.5" Brass Cap Stamped: "US Bridge Abutment <br /> Coast & Geodetic Survey A329 <br /> 1957"' <br /> <br />. <br /> <br />Floodplain Infanna/ion Report 33 <br />K:\356001004\FLOODPLAIN INFORMATION REPORT.doc <br /> <br />June 1998 <br />