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UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY MAP OF FLOOD-PRONE AREAS 108"07'3cr '5()OOOmE. 38"45' ,151 '52 R. 96 W. l t292000m.N. 4291 00 HOTCHKISS /9 MI. AUSTIN 6 MIi RA t;JOr Dri~ein /' ,/-~,Theater --r~~~t----' ;;;:," ~#- 1" t-,> .,/.~ 0_00 R. 95 W. eO .' " " Q. .11 '00 0" 0" 0 0 '0 I' / , , - "..!E '1 , - 26 / , I . ", " , - -;"'== 0- ,i " 0 " !~4 00 , :0 42'3cr C-, 00 1. 15 S. ." 5/77 i~.Q_. T. 51 N. 5~Ot , 0 i \ I , I \__~L______ '\ I , I \ '2cP~1 ( 15, _ \ I J? 4286 '=====~.=:;=~"".9~ .209 , 'I 1 @l l l '\ 0,0 :11" '" I'" " ," ," I'" " " :11 1 ~ --------- ::: '" I" " :\1 " "'====~I .~='~oY I:: " .11 . "II I" " \ \ 5227 "-'-" 4284 40' 4282 I I 1 1 a_,r- I /~~~ 1 .~ '-- 1 28 528' \~---~t'-- . 1 1,00 I ____ ., I~P~ I. : Ii IfiJi t.:\ \ --\ \ [T1 ~ ,~ 4281 D;O -------- '-"" T,5O '1 " I I, I II: I i!1 ~Ir Ii: "I -+--. " ", - I . ~ , ~~ \-----"" 11[3""'- ---~--'\,,=''''=''' II. I ~&=_;I~ : '~>>>>~~>< 00 300 000 FEET (CENTRAL) ') 4279 ;' .0 3~37'3<r 1151 752 1260000FEET CENTRAL) : 108"07'3cr , h h' T' h ' th Approximate boundanes of flood-prone areas are s own on t IS map. ere 18, on e average, about 1 chance in 100 that the designated areas will be inundated in any year. This information is important to public agencies and private citizens concerned with future land developments. The flood-prone areas have been delineated through use of readily available informa- tion on past floods rather than from detailed field surveys and inspections. In general, the delineated areas are for natural conditions and do not take into consideration the pos- sible effects of existing or proposed flood control structures except where those effects could be evaluated. Flood areas have been identified for: (1) urban areas where the up- stream drainage basin exceeds 25 square miles, (2) rural areas in humid regions where the upstream drainage basin exceeds 100 square miles, (3) rural areas in semiarid regions where the upstream drainage basin exceeds 250 square miles, and (4) smaller drainage basins, depending on topography and potential use of the flood plains. The 89th Congress, in House Document 465, recommended the preparation of flood-prone area maps to assist in minimizing flood losses by quickly identifying the areas of potential flood hazards. More detailed flood information may be required for other purposes such as structural designs, economic studies, or formulation of land-use regulations. Such de- tailed information may be obtained from the U.S. Geological Survey, other Federal agencies, or State, local, and private agencies. @) ..52Cl.'!. ~ ... " 0', 5373/ . g I 19 '\ L ,-' " 534811: .11 i,: "I:~ ~I II II /I II. II II. II: II Il: II II III !ij:vViI II II II II: II I~ Ii. II ",' "I II II I II II ii. I II: ~___J~;::, -----,I~. -."-ro-."'~ :=== ~.~. <;1iJ ::1 '-l " II: ~ '55 SCALE 124000 1 0 , 1000 0 1000 2000 3000 '000 !j()(J() - - - 1 5 0 ~ ~ ~ ~ ~ CONTOUR INTERVAL 20 FEET DOTTED LINES REPRESENT lO.FOOT CONTOURS DATUM IS MEAN SEA LEVEL Prepared by the U.S. Department of the Interior, Geological Survey. in cooperation with the U.S. Department of Housing and Urban Development, Federal Insurance Administration. 1973 115289 " 6000 7000 fEET 1 KILOMETER '57 2'30' '----g" ,/ cfl.=;======= , R.lIW. '0 r I MilE 7243 DELTA QUADRANGLE COLORADO 7.5 MINUTE SERIES (TOPOGRAPHIC) 108000' 38"45' 4' f?~\'\ ~ 0 , 0 ~b' r,.((- . 0' ,<-0 ,0 1758 1160 'I-~' - 0: b' I~S'''o ________ -n~ Ii 00:11, I I Iii II~II . \226 I 'I I \ I I I~' :, 5~:; " ,-I' ~-=JIV. I. I I 'I oP, I '0 .g e S '" gO 193 _5~1I ,:>"^ --1 :---"H G-----.- , , } "I / : :.. j"CC- >'~<'t, f '" {' ;/ t= )1 Ih---- ~ ----.Qf "'1<' '~%/~...._.. u"'/f// g:,1 /1 '- 1'-.. .. ~ ^"' i \' r ,j, " "'.y:' ' (I 'I' 5'50. 1',/> 0' "'" 27;' " "''!'C. I / ' ~-=-"<7_:__""""5"20,6,X_ . ./ . g " ~~ .' roll ~i--:------- _o_____-=--:;,""'~ (il, ~ ':,g ,rJl ., ; m l\) , " / 5186 1___/ " ''--, 000 , ,0 0, .. 51'J1 "o>lumbine . S<h . " " o ~: " " II " " 0 " 0 " 0, " " .5212 J\~218 'll. FG 19 LATERAL! o ;0 ~---!:...) ,~o \fI 5228 -:s:. 00, + 10 5231 8.~ g ._B "'Bil 1~=====7--:- __5240 ~ 000 ~, /' +5271 ,'. j- I I I I ...__- I I I I -- ------15?48 29 I \ I I I ) +5266 \1 ) I / g. /5287 I I I I :1 I I I I ____.L_ :g' ,.0 -, ",' 5316+ I I I I "~"=~ I~ "'.. <, . , 0': ~- :i ~. II " " o 00, ,p/ 5329 " , ~~ "'., " .' ~~.:;~~~'=~- .' . INTERIOR EXPLANATION Flood boundaries were estimated from: Regional stage-frequency relations. o U.S. Route o State Route COLORADO . QUADRANGLE LOCATiON DELTA. COLO, N3837,5-Wl0800/75 Base by U.S. Geological Survey 1962 28 37 ( ~ 340000 FEET (CENTRAL) 4291 4290 4289 4284 40' 4283 4281 4280000"'.N. 11'"11'"1""0< 0'...-<1,.>- .........--s.-'<t' ~ / ..