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<br />
<br />MAP OF
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<br />AREAS
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<br />7277
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<br />T.4 N
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<br />
<br />UNITED STATES
<br />DEPARTMENT OF THE INTERIOR
<br />GEOLOGICAL SURVEY
<br />
<br />FLOOD-PRONE
<br />
<br />I
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<br />I
<br />
<br />40'022'30'
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<br />T 5 N
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<br />T. 5 N
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<br />T 4 N
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<br />T. 4 N
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<br />6
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<br />20'
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<br />4496
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<br />17'30"
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<br />350 000
<br />FEET
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<br /> 4650
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<br />T. 4 N
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<br />T 3 N.
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<br />T.3 N
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<br />
<br />40'015' I
<br />104"22'30"
<br />Approximate boundarit.,s of flood. prone areas are 8hown on thif:; map. Th~re is, on the
<br />average, about 1 chance in 100 that the desig:nated areas will be inundated in any year.
<br />This information is important to public agencies and private citizens concerned with future
<br />land developments,
<br />The fJood.prone areas have been ddjm~ated through use of readily a\'ailabl~ informa-
<br />tion on past flof)&~ rather than from detailed field surveys and inspections. Tn general,
<br />the delineatt>d areas are fur natural conditions ilnd do not take into consideration the pos-
<br />sible pHeets of existing or proposed flood control structures except where thm~e effects
<br />could be evaluated. Flood an'as have bet!D identified for: (1) urban areas where the up-
<br />stream drainage basin exceed/! 25 square miles. (2) rural areas in humid regions whl"re the
<br />upstream drainage basin exceeds 100 square miles. (3) rural areas in semiarid regions where
<br />tht. upstream drainage basin exceeds 250 square miles, and (4) smaller drainage hasins.
<br />nepending on topo1o{raphy and potential use of the flood plains.
<br />The 89th Congress, in House Document 46.'). recommended the preparation of flood-prom~
<br />area map!" to a8sist in minimizing flood losses by quickly identifying the areas of potential
<br />flood hazards. More detailed flood information may be required for other purposes such
<br />as structural designs. economic studiei'!. or formulation of land-use rf'gulations. Such de-
<br />taih,d information may he obtained from the U.S. Geological Survey. other F{'d"~ral agencies,
<br />or State, local. and private agencies.
<br />
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<br />'..TU.'_-GlIEOLOO'CO'I..'"U"'""V..........H'.."TO><.I>.e
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<br />JJ
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<br />~ ., t; ~~g~j/I
<br />o
<br />
<br />fROGG(NJ
<br />
<br />17'30"
<br />
<br />40"15'
<br />104'15'
<br />
<br />,
<br />
<br />.\;;.,
<br />
<br />1 t
<br />I'=:::=--.=r-- ....-_ ..............._.. .----.
<br />
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<br />
<br />1 "1ILE
<br />
<br />EXPLANATION
<br />
<br />'0
<br />.....,
<br />."
<br />
<br />SCALE 1:24000'
<br />
<br />---0
<br />
<br />I.'-'Iood boundariel; were estimated from:
<br />Regional stage-frequency relations.
<br />
<br />1000 0
<br />E3....=.-~
<br />
<br />1000
<br />
<br />2000
<br />
<br />3000 4000
<br />
<br />5000
<br />
<br />5000
<br />
<br />7000 FUT
<br />
<br />-------<
<br />
<br />1 5 0
<br />...~ 1-_-< ......-.. >---t ~_-t r--
<br />
<br />11<IlOMElER
<br />__-==1
<br />
<br />.
<br />
<br />CONTOUR INTERVAL 10 FEET
<br />DATUM IS MEAN SEA LEVEL
<br />This work was performed by the U.S. Geologica! Survey for
<br />and funded by the Federal Insurance Administration,
<br />Department of Housing and Urban Development, to meet
<br />provisions of the National Flood Insurance Act of 1968,
<br />
<br />COLORADO
<br />
<br />QUADRANGLE LOCATION
<br />
<br />DEARFIELD, COLO,
<br />N4015-W10415/7,5
<br />Base by U.S. Geological Survey
<br />1951
<br />
<br />1974
<br />
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