<br />UNITED STATES URAVAN 'QUADRANGLE
<br />DEPARTMENT OF THE INTERIOR MAP OF FLOOD-PRONE AREAS COLORAOO-MONTROSE co
<br />GEOLOGICAL SURVEY 7.5 MINUTE SERIES (TOP<XRAPHIC)
<br />108045' @ SW /4 NUCLA 15' QUADRANGLE
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<br />108045 1070000 FEET .......NATURfTA f3 M' 42'30" , R 17 W 'NATUR'TA NW' R 16 w \ 40' 705000m E. <N....O..G<O'~K"''".... ;;"'H'~'O' 0' 108037~~.:5 - "',' ., - -'-
<br />Approximate houmlarit>R of flood-prone areas are !olhown on thi~ map, Ttwre i!ol. on thf>
<br />aver<lJ{e. ahout I chance in 100 that the de-signatl'd an'as will he ll1undat,'d in any Y('ar.
<br />Thi~ information I~ important to puhhl. ugf'nl'i(.g and privatt. citizl'IlS concerllt'd with futurf'
<br />land t1evl'lopnwnt~.
<br />Tht, (Juud.proni' areas ha\-.'" been ll(.lineated through ust' of n>adJly available inf(Jrma~
<br />tion on past f1ood!'l rather than from lietailed fIeld ~urvey!o'l and imq.u.(.tion!o'l. In gelll'ral,
<br />thp d{'lint-'ah.d areas an' for natural conditions and do not take into consideration the pas.
<br />~ihlt' t'Heets of exiMin~ or propos('d flood ('ontr.ol structures exct'pt whert.! thm;e t'fff'{'ts
<br />could bt-' evaluated, Flood areas ha\e t~t'en ldl:'ntified for: (1) urban areas where the up-
<br />stream drainag(. basin excPi;'dl; 2,; squart-' miles, (2) rural 3n'(lS in humid regIOns wht're the
<br />up~tream drainag-t' hasin ('xcef'ds 100 squan' miles, (:1) rural '-Irena in st'miarid reJ;fions w}wn'
<br />thf' upstream drainage basin exceeds 250 square mile!'l. and (4) smaller drainage hagins,
<br />depending on topog-raphy and potential use of the flood plains
<br />The 8~nh l'ongn'8s. in Homw Do('umt'nt :J65, ret'ommended tht' prpparatlOn of flood-prone
<br />an'a maps to a....sist in minimizing flood losses by quickly identifying the an'as of potential
<br />flood ha:t;ards. More detailed flood information may be reqUlrNi for other purposes such
<br />as structural dt'"ig'n~, economic studies, or formulation of hnd.us€' rf'g'ulations. Such de~
<br />tailed information may be obtained from the U.S. Gt'ologieal Survey. other Federal ag-t>neies.
<br />or State, local, and private aR'encies.
<br />
<br />~
<br />
<br />"'"
<br />"0
<br />o
<br />".,."
<br />0",-
<br />
<br />\1"
<br />,0
<br />,\I'
<br />o
<br />,"
<br />,0,)
<br />
<br />~
<br />
<br />SCALE 1:24000
<br />o
<br />
<br />EXPLANATION
<br />
<br />1 "'ILE.
<br />
<br />I
<br />~----::t=-----=~__
<br />
<br /><-------.
<br />
<br />,,--
<br />
<br />..-=---=----
<br />
<br />6000
<br />
<br />7000 FEET
<br />.
<br />
<br />""'"
<br />
<br />300iJ 4000
<br />----
<br />o
<br />
<br />1000
<br />
<br />2000
<br />
<br />'000 0
<br />~~-=
<br />
<br />Flood boundaries were estimated from:
<br />Regional stage-frequ~ncy relations.
<br />
<br />-----
<br />
<br />1 KILOMETER
<br />
<br />: ,
<br />~-
<br />CONTOUR INTERVAL 20 FEET
<br />DATUM 1$ MEAN SEA LEVEL
<br />ThIS work was performed by the U.S Geological Survey for
<br />and funded by the Federal Insurance AdministratIOn,
<br />Department of Housmg and Urban Development, to meet
<br />prOVISIons of the National Flood Insurance Act of 1968.
<br />
<br />[::J
<br />
<br />URAVAN. COLO
<br />Sw 14 NUCLA 10 QUADRANGLE
<br />N3815-Wl0837 5/7 5
<br />Base by U.S. GeologIcal Survey
<br />1960
<br />
<br />QUADRANGLE LOCATION
<br />
<br />1974
<br />
<br />-<'
<br />0'\1'
<br />~
<br />0"
<br />"",-i'
<br />,
<br />
<br />---
<br />
<br />7262
<br />
<br />III..
<br />III..
<br />I
<br />
<br />i
<br />
<br />.
<br />
<br />EXPLANATION
<br />
<br />Flood boundaries were estimated from:
<br />Regional stage-frequency relations.
<br />
<br />NUCLA. COLO
<br />SEj4 NUCLA IS QUADRANGLE
<br />N381 5-W10830/7 5
<br />Base by U S. Geological Survey
<br />1960
<br />
<br />~
<br />
|