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7277 MAP OF FLOOD-PRONE AREAS ' '" 1'>O~ ..., . (> '~ "',,-,,- "'~ <<, UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY 104'45' t I ~2ZOOOIll.E. 1.2 MI. 40'22'30" rc- . ~ --. I _~ .1'- "69000mN.'""-\,, ~~- \~ h \ 26 ,4747~ ,\ '\...1 I .~~C .l....o\ '; ?o'o ~ ~ III J. \ "" ~, f', ~ , ~ ,; .- ltI&-o Rad,O'-loww ~ {" iCoo" ,~... I.r' Q j "",-' .........iF ....... ;~i' l' ~,__=_~_~_\~i>!J":."7'~'~ , . ,'to .--/.;- ~....; ~c' r_" . ,~;f~.~. - I . .... ~.~.- ~;;~. -'".:- , ~ j LA SALLE QUADRANGLE COLORADO-WELD CO, 7,5 MINUTE SERIES (TOPOGRAPHIC) 104'37'30" -, 40'22'30" -1''', , ,,' , ';j o1Q0~ \f R. 65 W. I 42'30" [525 ~;~~,L~; ~.'~, ~~ ~ :ft;;~~p.-q.r --- :~r f-'--'-~;~ ';l, ; .,'... , ( " ! ..f? I \" i i r ./' .""682' t =-=-." f!:VAN$ 19 MI~"\529 530 1.5 MI '-----.' "<\:'0,,\ TO V,S. 34 -E240~ ~[tT R. 66 W .~ TO U.S. 34 '..'s .'\ \ () , i I '-' . 0 .I ~ . w'''I/ 464~ i , , I 0."'", ",0 , o , ,. , 00 :: 27 '--.......... ~~O:-'. 25 " , , 4655 '.~" ....... -" ---..-- !I ";V u!,noN ~ t ') IJ 4659>> :. =-='-'''-=.'_-~-'''= --=""-4 Well h 4662 "': '!l,.. Dl1"CI'"l o .(1.660 ~'\t~~ 4653 --.........;. / I / ;' v ~ , ';-',"",'~ J ~ Ii I ~~ .Ii " I""," .., I I .0 ;> :t\ ,\ ! ~ tiO "./ '\ . ~ ':tb >':t' .- ,\: 36 \. SOUr I-!,~" ''-.~ ' <> ~ ,# c.\.OOO ,,'. ""',O#/~- '{ ," \ 465Y:'-:'~ << 00 /0" ~.~~~-:: ~~~:..-t.657 26fif~Y . /' c-". _ /O~. /"- U t>/.,. 1'" /./.P( "'-.~~o i 4674 :1 32 . .' .='-=~=._"-"", '" ~4664 !':'" I 34 33 )(466/ / 4660 4467 r.:./;J' ,. "- <:,.", \ (, [~ . ~\,T.5N. "-, 1 T.4 N '1 1"66 I iI ~. =' \ II ~",....~...ji ~ 9~ 1'<>"1 :..loa ~ I . Well , 4667n 467JiF- '-=-~-'--'-"-~67~=--='-==-.or-'==--" r; ~ ' ". U ~ "- I' "".j! " 0, ." (w",~t5~ 5 ..$85 &6'0 SOUTH- '-" .~ "b, leil 64 , '.!> '" '.. r , ( I I 1. 5 N.t 'I."" T.4 N.I'-r675 -i It: <<66j -. . . ,,~ "'i< 00 " LO It' Ell I,ATliAM , ,; ( '~ f) RESE~FOIR o " <}D,mt ~~?:!) '- " t ~ . . .":':> Well 4675 ,--,- . '~'1"CH ";,f~ Well 4616 ..--= ..,L ~.:.....-._ BRANCH 4 UNION "'4 3 2 , '- ~ ~."-', 4-700 ~'\. ," ( I ~ . (J ;1.;".;, j. , r," \.) Well ""tf:.6!O , ,,"'" 0" j' ,I .' .. ': .' Well --.688 ....=,...__d. liVe!! ,#$89 Well 4692 ;; ~ . ~..", -"m i J " , m ~ o \ 4465 ) . I II Weill 4708fi u ,.; .,1 ~J~ , I , II "-. ..0.' --'''u.Jrr Ii '" Ii. j' II' .~ ~ ~ . l -=--==--==-=. 1 ~', r.,~t~=,-=-o;,oo :1 Wf:'H 4689 Well} 469,~ Well ~688 / 1"'-_..-:"-". (:4670 - " , , . , " , ., . 4669 ... x.. ...-.. ~~.6:rs .'.,- 4710, Weirs-1 4712 ) :t;_,," .~ - =:.. :0;:':::'_,. 4,669 INDEPENDE.NT u. "'''~'--~''D;'=" 'f Ii , I ':I, tJ4696 il Wells 1__#696 Ii l- iI" .1 '1 I" " I r' .1.,. -"'---""'=""-'=':-;/i , ." OJ. , 1-120' ,. 20', Well .."!'/i!J.? -' \ ". ~O '700 Well 4714 ''''6'.90 '- II .' I Ii , II , 'I " ~, t. <; ! / ",,/ .. / / r \ ". " ~ < " 6 J 8 / ./ Well '1682 " , \ ,\ 11 --." " \ j11( B,h",,~2; 9 ~3-' 4>00 ~ ~1'1~69.? _~ J:esf1I01r..... -, ,l\\ . ! ..~ jlj 1" II - / ;." _~ 4-750 ,~ {;;-' t IJ ? r!\ , ii ,pc", ~ "Il ~ ,L ~O\ i\ Ie~. 0 h I ,. .1 'beDra.w " . l...78f'< j . ,r Sd )()J -=,T'~~~'''';1~m,o-:=- ,'-:;- I ~ . , ~ o Well \ _==::-::_:.~.l!!!-:... ~10 "--... "1 'I " , ~: . '\ \\ \ , ~ ii 't 0'1"64 12 , ~ / i / - --. +-~~.=""~~"tl63 ) i I i 0 . J t. ;; '--.. --/ "641 h I, 1\ p 1 c ( I " v Wells Well ~714 11 /-- 47/8 ~ 4100 o / ;i \ Well /' 47" "v "..~,) " 0 , '" /, "~==...h,,"~-)'" -.'.- -- 147!r'~\' D;tch '"'- ...705 w." /H ., 4(">" ,. v.,ro, I" -' Ii' I 'I , ., . " ,I J/ o r ..~-l.t=..._-~...=_=...~..:::__~_= \; ..6821f ..ff> \:~ I~'/ __- ..........-., "") ~ I 47& ) -J- W,II -4C:J:); /r4700 Welts 4727 ;~r-ooo ., \ '- ~ :11 '! r 4725 '. , .463\ , I ~\ -, /- < t. N o , '1 I I ."\ / ~ , o o t U ~~ Is~ !>!, I!>~ >~ '" ! I::: "~OO~ - ,!~ ,- .. - ,/ ----:""-rr ~ I- .' ~ ~ o 0 " t \ <<61 II , ...1 Wei! ....69.$ '\ Well , II I - o 1/ _A 1 .4704 :. I , ~- ~. '" '. ;~ .' ~~ / .l I I I 16,0 i' 14 17 13:1 , r \\ il ~~ " r-- j I (-...... }jtg Bend I { " OOj~ ' l \ \.... ~/'''SchOol ~l47f7 !~"~ 0,.,- ~ !1l4724- I_,,*~~=-i;&;_=-= ii~727 . -" \~'le\lee'. ,,~':...'+f"'-~=--::D~h-j ____/ ,~ , rf "C"l .-- ~:;;I /""" J ' H/ ~~I -" \ ,f l>J O' ~~} ,1: Qg! :~r'C-~ ~l/ . /23 r 4726............ , .d,-c< - ;('\ (c-' "'- l.,)' --." ~r-- -} ,V 'Il,> ~ 't ",.."'" D . ~o) >-- "60 , }------,'~~/ '0' I 17'30" ,- If I 1" \ 1'. 4734 I . ~ "--t-__ .-._---"._ '---=--';-- - 1---= -'j{c - -~--"'-"=-'=f- =,__c ;;-'1~=::- '"___ ____.......:4751 ~f"-I/ ~ ,-' ~ hi 0 ~0--------; I - . \. ,-::.._-.J, I 150 / -- :~. "/ II Q) I.! .J.---.."" W,II, . 26 -\ -,~'1i"~770 "5:1~4~8~ ) '-- l'V aii f)0 . r ~I (1)1 "II Jj " el-./ I.. .~ \ ~"'"' .. . II I ;j Well, r wen_~/ -=i,.:z.I,1_~--.;~ ='.1= i _~____4~~lL_,_, - - " .. .. 1 :,_. \,r,~ 18 ;'"', ,-......,-W~!l J -4711 4710 '. "J! 0 .~ " ) '" / I, _1,120 II , 0" ~" ..~I /" 4.7381.. -" ." . '. ";;;;.J;.'f'- _,,'C"_..._. - /" - ,"~f 1f.P' ~- r"'-. _ , , \ . " j .4 "62 r I~ :. ",,"10" I ... 't ~, I / I ii" c? 1~~~ r~' ~I .' ~I ill ~, !II ~ . <"0 'l!"Jl-~_=_ 1114715 1\ \ 111ft '1- ,~{ " ., III \'IIi ~ ~:;~c;~:;;.~_ I , . 4~. . , -7~--=-r--1' .,0 / E-:::-:'. =--=,..:.- :114713 ] / I J] ~ ,/ -,,/ I " ~ ., I, , 'It :I o il" , . , ..74'4-~ ' 11 I :1 I I -' , "' '"' ..11 j , Ii .4-770 " I. h--, '.Ii . '" NO /" ~ <" ,/' I " \ \ './ " b1!;,o r .) 23 19 0."': - 24 -- -' / 4-770~ 1" " \Well 4725 , r "I j :i~'-~'"'/r A ....___c/ , .;>>_" _-='_-~_~'. d-=_,=_ . )I.-j"; . Ii :rf" Ilo} \ ,I '_ _~'~>&oJ . ,0 ,1 / \ ! \,"''' , , ;. *,- '" _'=e>> 1 I , Q f UL g ;" .. , '. \ ')" ,- ~( \ \\\ ~ -, I \ I 9, 'oJ ''to '( '._~~,,~,\ ,. '~" " \j ; i~:;_ ( o ,'J I 'P,i\ ) 1/X i / d' . i ~I/jl' ^ ~o' . , I ~~147': =-~-' - --"?.'':'--:.: ~-: ~, "",>< '-~ "J I +~cz,,,,,,,1" W : ~ II". , . , , . ,4 ~"'i,,;:,-,--_ J 'j ~ \~~ o .t4767 ~ -'~~~~ ~ (.- \ >'l: ' \J ' 4.. ~:477" \ D;l'h ""'---,. ,J --iii_to, -- . , \. 4>&0_ , ~:"'-"'"Oi.", \ ,"o;io> "'\ ') ""~ " ----.z", ,""'-_. ':t..,., "" \ ~r:.~' . ''''79!.~i''',t.3 'I \ i ' \ 'Ii!'>6"Q , .. , , , .~, .,~J"~~~~780 ~ f ,,--">. ~30 . " I? \'\<( )( <\) ( \, r (~~' weit 47'2 ". \ /~: v " -r-__.. ..... ( -t--.,. rv-':.-f-.- II , ,/ I'i"'\ .r ~ I I - . /I )1'"4790 II _..-/' I , , ~ ~. , ,0 " -- J\ ( I \ , '-Well (,7.12 '-.-- 25'- _J r:Wen ...) 4782 26 7 U59 ( Ii! / ~ I , J5'.: C'<.>V "'-~o .) ( /" ,Ii! . ,. " '" ~ l R ~ ( ( I \ I' ..,,J o --, \ " IJ / ----~..;.~-"""""'..- I .-t~ '- , / <<S8'j '" JJ (, \j Q) }j '" OJ J --, ,,0 , / ! ",0' O,r I i, .-... ". \35 4880_ .I \ I - ) \ \ .'/ \'r~J 'c, r./ \ ii \-' rJ !~ \ \ b' :;;" I ~Oo (~ 0-~ ii, I"_~/ l C::::;>"j+C 1- V rf~'\/ "57~'-- c / J 340000 I - ~ > .iI' FEETt ~.) . \ ~~l I T 4 N ~"~,,J.'::.:::l..A,,'crl-" ...........rSi T.3 N I ,",I \ '\.)484) I. --' I, ~ ~6>so : " , . " :: ../10. . C\ u(" 'j-'"'\ d !I -:16'-"00 ) 1l', ----' C\\ r;-...,i \ ) o I n. "'" I v ~ \Ji \~ . rt (" ~':':::'r .) ~r--::'v ~\, , , ~O~ \ (:;..) ( <~ "'0 I 1'..59 i'~oco;= - ~ "~-90;::: "1 \..... 'L. o , ") ~--~t6 1I~__ IV 1\/\ T.4 N. 1. 3 N. (j~ o r."O ~~D ! ~ JI \J2 LJ(I ~ \. II' J '\) ')\ r,\,: -/ //edJ .:...~+..I.- _ ""--:........- LL4:L~ '''Tf'''O''-Gt"b....,...,<::..... ...""tv!. ........'..C.TO.. Q e 531000m.f. '- ~i , I " '- r . ~ ". o \' J Ar~ <""" , I Q ;~ o ", \ \ \. ~ 1\ ^\ \ r" J-' )'~~ \ \\ /0 ./ I r-> ,) \) >,'"' ) ~ <J \)l '1 1 ~ I ~, < <;Y90frt-' s\. II ,( 4456lXX1m,N. 4456 C. , \ / '- r / .; 3'..'. ~ ' . . \. ," 0903 / 6 1 2 r 4885_ ~ "~Ie ,# \ . ", \\ I () / ',,- "t>' , }v-., ~ _'.., ~ +- ...s.:'~..J.._~_ ---'----4-_--i': 526 (MIL TON RESERVOIR) 527 506" /I NW SCALE 124000 ~ 0 -- ~~=-r. .ci::::~-==_~_~._--',-=;::::-,--=.-=-- 1000 0 1000 2000 3(00 4000 5000 6000 7{X)O FEET E3:::E3'-::J:::::I.~_-=-r= __'3:.. ~ :r --:-~__""_~: _....J 1 ,~o 1 KilOMETER >-="-:r~-,,=::t~ .............-----y;_~-o:=::.~.,,===_-::..."._-~=-=~ , , \ \ , ;I ___:L.-i~ 65 w. 42'30" ,0 ," , ...... - ~ / a.9r:,o I ~ r "'--L 4001r~4:;;:-t22ioodo F"Et':--ii2-l. ~":::::..... "4m--'! I -.'R~66 W -.- R. Approximate boundaries of flood-prone areas are shown on this map. There is, on the average, aLout I cham'e in 100 that the tit'signated areas will be inundaterl in any year. This information is important to public 8g-encies and private citizens concerned with future land dl'velopments. The flood-prone areas have been delineated through w~e of readily available informa- tion on past floods rather than from detailed field surveys and .inspections. In general. the delineated areas are fOI' natural conditions and do not take into consideration the pos- sihlt' effeds of existing or proposed flood control structures except where those effects could be evaluated. Flood areas have ht.t'n identified for: (1) urban areas where the up. stream drainage basin excet'ds 2S squan' miles, (2, rural areas in humid regions where the upstream drai~age basin excet>ds 100 square miles. (3) rural areas in semiarid regions where tht~ upstream drainage hasin exceeds 250 square mile~, and (4) smaller drainage hasins, dependin~ on topography and potential use of the' flood plains. The 89th Congress, in House Document 465, recommended the preparation of flt)()(}.prone area maps to assist in minimizing' flood losses by quickly identifying the areas of potential flood hazards. More detailed flood information may he required for other purpos€'s !'Iuch as structural designs. f'conomic studies, or formulation of land-use T(.gulation!'l. Such de- .tailed information ma)-; be ohtain(>d from the U.S. Gt>ological Survey, other Federal agencies, or State. local, and privatt' agende:-;. 40'15' 104 '37'30" t ~28 40' '29 '\ ~<-", 0(5:",... 1:> ......-v.,. 'l-~o'\-.-, ", -.1,,,\ -\~,\\ ~ r;-\,... \ lV_,o EXPLANATION 1 MilE , ~,_._~ Flood oound.a:rie% were estimated from: Regiona.l stage.frequency relations. C::J CONTOUR INTERVAL 10 FEET DATUM IS MEAN SEA LEVEL This work was performed by the U.S. Geologica! Survey for and funded by the Federal Insurance Administration, Department of Housing and Urban Development, to meet provisions of the National Flood Insurance Act of 1968. LA SALLE. COLO, N4015-WI04375/7.5 Base by U.S. Geological Survey EOmON OF 1951 PHOTOREVI.SED 1969 QUADRANGLE LOCATION 1974 ,