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<br />UNITED STATES
<br />DEPARTMENT OF THE INTERIOR
<br />GEOLOGICAL SURVEY
<br />
<br />FALCON NW QUADRANGLE
<br />COLORAOO-EL PASO CO.
<br />7.5 MINUTE SERIES (TOPOGRAPHIC)
<br />
<br />MAP OF FLOOD-PRONE AREAS
<br />
<br />NW/4 FALCON 15 QUADRANGLE
<br />
<br />104.45' I I 506211 sw
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<br />,~ '.'1 50611 sw r 532000mE. 1043730
<br />Approximate boundaries of flood-prone areas are shown on this map. There iS,on the SCALE 1:24000
<br />average, about 1 chance in 100 that the designated areas will be inundated in any year. 1 k 0
<br />This information is important to public agencies and private citizens concerned with future ~.- .. -----
<br />1000 0 1000 2000 3000 4000 5000 6000 7000 FEET
<br />land developments. s::::ECE::L -. - ..- ~
<br />The flood-prone areas have been delineated through use of readily available informa- 1 ~ 0
<br />tion on past floods rather than from detailed field 8urveys and inspections. In general, ~.:r ~-..=r- >----<.~ 0----< -------.
<br />the delineated areas are for natural conditions and do not take into consideration the pos- CONTOUR lNTERVAL 20 FEET
<br />sible effects of existing or proposed flood control structures except where those effects DATUM 1$ MEAN SEA LEva
<br />could be evaluated. Flood areas have been identified for: (1) urban areas where the up- Prepared by the U,S. Department of the Interior,
<br />stream drainage basin exceeds 2S square miles, (2) rural areas in humid regions where the Geological Survey, in cooperation with the
<br />upstream drainage basin exceeds 100 square miles. (3) rural areas in semiarid regions where U.S. Department of Housing and Urban Development.
<br />Federal Insurance Administration.
<br />the upstream drainage basin exceeds 250 square miles, and (4) smaller drainage basins,
<br />depending on topography and potential use of the flood plains.
<br />The 89th Congress. in House Document 465, recommended the preparation of flood-prone
<br />area maps to assist 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 studies, or formulation of land-use regulations. Such de-
<br />tailed information may be obtained from the U.S. Geological Survey, other Federal agencies,
<br />or State, local. and private agencies.
<br />
<br />1 MILE
<br />
<br />EXPLANATION
<br />
<br />r KilOMETER
<br />-.~~
<br />
<br />Flood boundaries were estimated from:
<br />Regional stage-frequency relations,
<br />
<br />C~l
<br />
<br />FALCON NW. COLO.
<br />
<br />QUADRANGLE LOCATION
<br />
<br />NW/4 FALCON 15 aUADRANGLE
<br />N3852.5-W10437.5/75
<br />Base by U.S. Geological Survey
<br />1961
<br />PHOTOREVISEO 1969
<br />
<br />1973
<br />
<br />7248
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