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<br />Mesa County, Colorado <br /> <br />Red Canyon <br />Floodplain Information Report <br /> <br />TYPE <br />NON-ROCK <br />NON-ROCK <br />ROCK <br />NON-ROCK <br />ROCK <br />ROCK <br />ROCK <br />ROCK <br />NON-ROCK <br />ROCK <br />NON-ROCK <br />NON-ROCK <br />NON-ROCK <br />ROCK <br />NON-ROCK <br />NON-ROCK <br />ROCK <br />ROCK <br />NON-ROCK <br />NON-ROCK <br />NON-ROCK <br />NON-ROCK <br />NON-ROCK <br />NON-ROCK <br />NON-ROCK <br />NON-ROCK <br />NON-ROCK <br />NON-ROCK <br />NON-ROCK <br /> <br />MAP UNIT NAME <br />Progresso-Mellenthin complex, 3 to 12 percent slopes, stony <br />Palma fine sandy loam, 3 to 12 percent slopes <br />Arches-Rock outcrop com plex, 3 to 12 percent slopes <br />Pinavetes loamy fine sand, 3 to 12 percent slopes <br />Sedgran-Rock outcrop-Arches complex, 12 to 35 percent slopes, very stony <br />Rock outcrop-Arches complex, 6 to 25 percent slopes <br />Berto-Roygorge-Rock outcrop complex, 5 to 15 percent slopes, extremely stony <br />Bodot-Mellenthin-Rock outcrop complex, 6 to 65 percent slopes, extremely stony <br />Persayo-Blackston complex, 6 to 45 percent slopes <br />Zyme-Rock outcrop-Gladel complex, 3 to 25 percent slopes <br />Moffat-Blackston complex, 12 to 45 percent slopes <br />Moffat sandy loam, 2 to 6 percent slopes <br />Moffat sandy loam, 2 to 6 percent slopes <br />Rock outcrop-Persayo-Hostage complex, 25 to 99 percent slopes, extremely stony <br />Sheppard loamy fine sand, 2 to 5 percent slopes <br />Mack-Gyprockesa complex, 1 to 5 percent slopes <br />Rock outcrop, 50 to 99 percent slopes <br />Rock outcrop-Saraton complex, 35 to 95 percent slopes, extremely stony <br />Luster loamy fine sand, 3 to 8 percent slopes <br />Blackston very gravelly loam, 5 to 25 percent slopes <br />Blackston gravelly loam, 2 to 5 percent slopes <br />Turley loam, warm, 2 to 5 percent slopes <br />Bebeevar loam, 0 to 2 percent slopes <br />Gyprockmesa clay loam, 0 to 2 percent slopes <br />Gyprockmesa clay loam, 2 to 5 percent slopes <br />Gyprockmesa cobbly clay loam, warm, 5 to 12 percent slopes <br />Riverwash-Bebeevar-Green River com [llex, 0 to 2 [lercent slo[les <br /> <br />SCS Soils Description <br />(See Exhibit 3 Red Canyon Soils Map) <br /> <br />8 <br /> <br />Ustifluvents, 0 to 2 percent slopes <br />Colam-Moffat, wet, com[llex 1 to 4 jlercent slo[les <br /> <br />MAP <br />UNIT <br />7 <br />8 <br />10 <br />11 <br />12 <br />22 <br />26 <br />53 <br />87 <br />101 <br />123 <br />125 <br />125 <br />127 <br />130 <br />Jl..L <br />904 <br />14F <br />16C <br />BkD <br />BI <br />Gf <br />Gk <br />Mc <br />Me <br />Mf <br />Ro <br />Rs <br />TbW <br /> <br />ic Parameters <br /> <br />Basin Area Area Init.Abst. CN* % imp. Lag Time** <br /> lacresl Isa.mLl tin.l l'!ol Imin.l <br />1 635 0.9925 86 0 34.5 <br />2 224 0.3502 88 0 20.2 <br />3 499 0.7793 87 0 19.5 <br />4 519 0.8106 88 0 30.5 <br />5 256 0.4004 70 5 23.4 <br />6 349 0.5455 72 5 27.1 <br />7 215 0.3364 88 15 21.6 <br />8 203 0.3166 79 30 19.3 <br />9 127 0.1980 79 38 26.3 <br />10 10 0.0160 79 38 11.2 <br /> <br /> <br />Red CanYOn HEC-HMS SCS H <br /> <br />Curve Number <br /> <br />Lag Time calculations <br /> <br />* See separate sheet for <br />calculations <br />** See separate sheet fo <br />