FLOOD08407

• County: Jefferson
• County: Adams
• Community: Arvada, Westminster
• Stream Name: Little Dry Creek
• Basin: South Platte
• Title: Major Drainageway Planning
• Date: 4/1/1979
• Prepared For: Jefferson County / Adams County
• Prepared By: UDFCD
• Contract/PO #: &&
• Floodplain - Doc Type: Floodplain Report/Masterplan

I

I

I

I

I

I

I

I

I

I

I

I

I

I

I

I

I

I

I

NOTE' ~~~SR~~~~~~G pl~EALI~~~~~ ~~~N~6~~E~~~~I ~~~I_ TRANSITION TO BOX-CULVERTS 2.5' DROP STRUCTURE
NEERING. IT SHALL NOT BE USED FOR CONSTRue- STA 109.65 STA.I04+15
TION PURPOSES; SUBJECT TO CHANGE
TRAN"ITlON TO BRIDGE TRANSITION TO BRIDGE '-~!~. CONC, 80X CULVERTS TRANSITION TO 8RIDGE
STA 126.00 ..~.~ STA 1!9.6~ y,~,I........96 STA,to2.47
~ ~~:) 8RIOGE/TENNYSON ST LIMITS DFCHANNEL RO.w TRANSITION TO GRASS CHANNEL ,
" y' '-~ /' \m$mr.I"'vA.1I' r\ ;A STA 119.14 ;If - "\" TA,108) 8RIOlnE/OSCEOLAST.
'''"/~'~\~ ,,\ S'--AI2E5o.ouINST\:~~v >"'- _<'"_-,_ :__j--' __ ,.'.. ~~ __~ ,";!;"-" \\'~, '\\s.~,f,'. '\ ,/::X/-~(;/.: \'-" / !/STA,t?\OS7 ~

"',;, '~r~ ~~ ,--,,:.,/'->:/<:\./<~'\S,,- '\ ,. \ ---f__ ~~~:""TOWAlLEIlCHANNEL~' -, ..J/...., ~:-----" ,:\ ' ') \\,;"~;;'>";-(" V V ~" ~;i~~~1;rt"~~RA~ss\o::.w\1;;'NEL
"",~(~~~ ~~;;'~~:>\~E~'~~~~, " ',~~ C'-:_:~~~~~,J,(!I.~'<>:'~'\\\ /, / /'~ ':';/ '~i""'" '\~
O " v~,; ~,~~ ~\/" ,\~,'[ ,(', , /~1L \'\ '7 _, .</ ~-~[8 ~'~':~ 4:;:;;}/.' '::\' . . ;.: \\>;;.
~ ", /,\/'l,( ~ J/; -'\\ ,'\~ ~~.";:"", ~tftfJf:!:' .\,= " ~
~'/,), (V':'(,'::('!!i("''\, ;;',> , \-,;,,;::' /\ ~~" . '.\ -Qc.c~'" \" 'C::''O'-~~ ~ . h 'y N' ':..,,,,, r\... \, ' ,; . :LJ:I~ "
\r'~:;/~c;'~' ")J (~ ' ---~~~'~i~'" \ >.:;;;;:'-:', "r,~~,:..d- ,.::~ G.: 'e"'"
'><~ ';>" \.//'A:~~~0-;- ~~. ,.'''' "".>' \, '\ ,~~,.~~\ /\, ::' I>" \ /?JjJf/ ~:\\;7 ':::ii:' , . ",~ ~ . - ~-:7 -,
,,\'-(."" . "'~' / '0' V,'. \ ,:///f ;;, /% ".",,'x~, ,,,,,+...,1:/
;:s;..\V"/" ~:.c.",' :'\;."\,' '//"\ ":~' ~/,),.. '/~;f;' ,:"--'''''" ""\\<\;'/ '~~""".
,'.' )"''''''1', 0(/ /./':"0~' ,.'\//;"A~~'nN;OGR~5 ,NEe 0-;";~"'."" ,.',,;;:;y~"V' '~~~'~- \\ _ _ :\, " ,~\'" '~7~:
\ - \, I '\ V '::2''^\~ ;> \. \/ /STA 116.~ \ \\ '(,(<// /^ ,~ ~ ';'~~~V )- ~. \ IN~~~2E;a 33 ,\ <' /1' l;.; ~_~ Iii
~ -I \ w' ( ))'>v \ ''\ ~" 9.RIDGE/.a;il~Y-DELJ'AVILLA~i.:rS\\' 'V/ / '/~.w,>.- ~ '" -.........:..';jfv~1'!1;:~5 ,'\,:> ," ",
\ 'I Tj~;,84'e"~ '\ \~\'<< / /,\ I ~/ ~"~\~~l;5"'" ~;.\ ~,.'-'~/ -/':1<::;~:0 INVE1tT5~9~~\ " -";./", /~ / //'/ -" /"- i \ I
~. '- '.eI) ,.-; "~"\' . <".. , , ,.. '\0. '7.4~/'!?"', '" .' ,/ \/\ ':/, '-., \ '
, ~'" V"") . (\.) "',,\ " ",..' ~ ,/ ~-\ <.':;' //W";4'~"" " ~" ''\', // : 'd, I 'OROP","CTU",
" (~< '\ 0'( \<A' ,~""~ (/\ ~?V/\ ' ~'-' / "P"\ \'\ \/'\'\ --':"';?:ZjF \) \, "','/): ",' /~,y / \,..,,,, \', 5TA)O~'"
)>3"\~;(~~') , \it'~&);,~o O~,^'R <T< TD'~R<~" \/ /;j' ,)'\ .;;{(f;.i)J:?" '- '- / '\, ",,/ '".,' 'V v/0' ( , " \ ~",/ -
';, '\\~'~\::" ..l(T'O"""W~"LEO :k:t.?,L\' ""'~"''\'\'(~'~'":'~ '''''~ ,/ /~' ,'\ 'J;!~y-.,,,,,, \ / "",T::'OGX\"'~'T66 ~~. , \/;/' ", "
". '\:-:," " , ,5T' ,,~/\ \ '" '.\'~~-"'; ',' \', . \~' ('\.' / .', ,'" :/:1 ,r / '\',/, ~~A'~"",'{,".': ' ' f/ '1-,' , -V\ <:'\ /"A5"'",0 '"ANN" " '\ '\ ,"
,.y \C,'\ ~.:;';o"\""T\" '\'~,," ".. ",,-I, ,\,~"" ,<:,;::;?' , " /", \; : "~ If' ~,""" /~,,:;V/ ".,g ,.
... \ ,"~' 8 10 I'UTICA ST 1< / ~:\ '? ~;, '\~ <, /"<y/ ,~f' -' " , ./ 000 vf>>.R\.[POD HAZARD AREA l.)MlTS // r y~,\ ~ / ///" LOW FLOW CHANNEL \.,,\~'
~"0 ~ "'-/ ~,\,,\,<,,~2~65 .-.,:;v'~ <,\-,"';'>\ ') .'\"\." ~ 'V' ~/!';/, ;\~V '/(~~~G C",NN,\ CO'0<TIQN5' , '\ '" / ?/ (\.MCCR"C' "H"~ '""OV<O CK..H" \ \
>(',..> " ~'~TA msv" \"~"/.l/~\:~\SX /" "..,... ~<~~" ' "J..~'/ ~/ '"~>.> ' \'.~\ 'i:fq'YEl>.R\.~HAZA~"'ARE~:~:t.'-~ //';;\\!2hVr/ \ "AronNAHC' 'OA;,:' \f\\
\.) (). j \/ v,~t \'( /t') 'X:"\c~~ > ./ \, .",,']i', ,"' :\, ""PoiO~ANNELC"'!f<TION5I /./. \~\'- ' ,',
\ .--:-:'\.\:)-;1;'. /,...fi ~~\~' S' /\~~~<" "'\,::?'__ ~ .p~/ '- '" / \ \ .-- ':\. .-/,/ ..-'/ /, \\ ''''\,\,,'.<
'\>~\.'>._>:t~(~,):l1"" ,".-- " , / // \\ '~' _ _ 105 ROW "
',\'v,>~ \~t'\~l~~Y' .' -;\ <,' /,-',\ ",' .-- ~$TFwcrUREIMPRG-VEM~T >-'\ \'.,,"-::\ /') \ \,// / /~ A \', ....--100 YEAR WATER SURFACE / !/';-_:[
, ' \-.{" 'll "'-\.',\, .. / ^ ,\ / ~/ '__:,' /1 MAINTENANCE ROAD
\ '\:-' \V~ ,::\;~~~ :\LoCAiiM.,~ '\ "-\" '. YR~I~)JtICA,TEN~SON,ST "'>ALLEY-DELLA VILLA APTs RAL~G~ST ~~2~Q AVe:: ,. OSCEOLA. 51 ,"..-/ // _ I FREE80A P' '\>
:"::...'>-,\')9\ ;\'<(" \"'<e:'" :~\ :-'" ~~G>TRUb:rURE'/ y ~~ 41'St'M;'r"'cl!'i, '\ (2) II S'X3 5 (Y~'X~6' \ "f/ //:' ( , 'V ~>,~~" ... \ \4;,r 4 I --- rFLOWLlNE /': I~~~
'0 ~ \\ \.~,.<" ~ '(r'\.:.'0:;>~~ t., Pl\ON , / Sf~J...-'LINt'i}:E.lJt:yER'r CONC BOX CULVERTS CONC B-oX'<(ULtX;;RTS !-.-d/ (2H'X.4' ELL CMF.', \ \\ ,',\,_'\ _ "'JiU 31 S- 2. w~~ ~
)... ,\'\ /\ 'C \, ',F",_<>\ \ L-..,- tip <, G AR\l2o/) ..... .../ 5~S9 X-T~._ 80 SO FT 178 SO,1T \ \ .../-/37.7~0 FT \ ...-... / ' '\' ''-'I'' ~ ., J- .' /:"1]

100 0 100 200 300 PROPOSED STRUCTURE (2) II' X 6' . 4 5.~' .
1"1- - - DESCRIPTION, 3S'X6A'SRIDGE OPENING 3S'X6.4'SRIDGE OPENING CONC.BOX CULVERTS 3S'X6.0' BRIDGE OPENING
SCALE IN FEET OPENING AREA, 244 SQ, FT 244 SO. FT 132 SQ. FT. 228 SQ. FT.
DESIGN DISCHARGE, 2050 CFS 2050 CFS 2050 CFS 2050 CFS .TYPICAL IMPROVED CHANNEL CROSS SECTION.
L ,/ STA_91+90TOSTA.116.20
c,v.. <i?-:'<-v REMARKS' REMOVE EXISTING REMOVE EXISTING RETAIN EXISTING REMOVE EXISTING (EXCEPT AT BRIDGES AND DROP STRUCTURES)
~ ~ ~ ~~.... STRUCTURE - PROVIDE STRUCTURE - PROVIDE STRUCTURE _ PROVIDE CULVERTS - PROVIDE 100 YEAR DISCHARGE' 4200 CFS
_ ,0 .~ ~Q0 ~,," 0~'~ _ TR~~~~~~~U~ANO , 'I TR~~;':~'~~~E~AND TR"a~;':~'2~~E';.""NO TRAO"g~T~~~~E';."MANOT_'" ,,'O'6t~iJ!~~1E&:,arf:S ,T', ,__

. 1,0 I ."',,,,-' ,~I,-1_ !._

~300 ~""'~_ ~ \,i ~'::' ~..~'~:...~,~ I ,,~f~~~q~l>. ~r :"i!' !6.~tf;~ cb'" r-~JODY RFLODPRFILE1. +..,=1., t ~" .~," ,u, I f- r '. 1 · ..:_~_

:.::.=+-"."..=- "'" ,-"W~. 1 r , "-. ,"1- '~I- iF '-;W::.t~ ~ ,~':;'if;Z'" tF/I.-4 .," ','.- 1 'I ^~' ;~;4;., ~,,"r L - ., [' II',J - +; 7#'<<'1":';1'1' T 1-"'::--:1 "" -"',.~~::.-= --
"9: ~~I 11 't', ~'--r ; (."'. · '~f'~~'~i/Y-- t"n R~O"~" . · 'J'~ .v~' .#&i .. -i--I '..J1I er::J>7 W~' ", ;i~'~90.

----+- - , I I I ' ------L PRQtOSED~FLQ~: INE <>..'?-'7 \
---;~ - - '" j , -- - ~ I r F II' 'I: - - "" I i I! ~ : I 1 / .J-EXTSTING THA~'/I EG "4-~t 1~~- {j"o"~ 0". jf- J,(,~ _" -
I! . r : -", i- - -T , / /' ~LOYJIFLOWICHAN EL1NYERT I r ~~.... ~~ ,-0' I 'f I '" T- _ f---

.....00 jtl .. ~ ~j-.-;;~~A; [~~ 'jii 1 s;\if:~~r'" ' . ~ll- '.. ..'~ ,--( - ~ -. ...... /~....- T . .;";::;/.+-; " u+L '''''.1''1 ~'I" i "", _ ____ 5280
-- -- -1".' ,m..~'"p.',,,,/ .~ ~;'~:j';;oc~":~_ I' .. R'--=-t<- ;'1 \-. +':- -'':1 -j" - __ -', J ; r J.=" ''''''''__
')- - iLSTI ~uGAS~_~,~ 1 I 12GA~,.---- I -___: [,j/4GAS+ : '. i IT' . I I
_~~UO ,~r: - ~ ~~'i4~R!: _".~~wralrooc, [\:- i - ~ i- ,:,+--t 24' A~[~~f~} 1 If '~wrrm.4 _ ' .-J-- ,k I ~_' :::,1 .,. -=F. __ ~::-r ,- I 'l\l 1 f- _ 5270
-- I -fi'Q'tlE.'1troV,Yc."J.. .. "" '. R.O (EllISTING EAfEMENn . - "l I' : j.....
,. i FL.." ",. ,} I --I "-.' 7, ~.~~z. gX{~liL~JE~ S5~T04E~~.~l,';.~EC_:-~ !
-- ~ t~".I,:. _",~",~, ,-WATEtt"._S-Ul'ACE-1 i "( ,"""YP'''''1 'I "lur; -=--- 1_/ IT(t--8ELOCATlfJ j ~ I f--~-:._--
. r- I::..i :::-, -_: '~-~ExlSTI GI2'!S~~}CIRCIJLAR 1 - I IB'SNSE~R--1--:.---r-_v/ I I /IONoo,.h..1SuSAN. I /rJ -' :\-r-j'
5260 -_ _ 'MkT-E A-NC-E'1ROAOt 15.t:lj "'i I 3-,8- - METAUCtlLV RT(l\ BEREIW)\IED) : - ;,-,,;; '''F ~
It I 1 f.fflt.lNf)!1 "! 3' - I 4 --j- - ! - -_ -~-r -l-~' - -; - i j 1-; "",-",tnQJIJ a::~-~ +-1 ,--- ~'-:-~~~t~~)( ~EMflN' ~ --~ - - t ~ T ~- 1-.-r= 1== -"'~
, , ! '~.-i<> ~ 1 ~ti "~. I "", , , 1'::. e .~ I '~E ~~~R~E_ J,...-: - , -- - -," >Tffi i" - - ,'- --
~ I I ~'TiELO. TION',OF~Ht:_~AI~TENA CEry~- 24 SAN EWER-~ I. "'-. -
19; 'FOft ?N.;,;~Tl;I;AL I"URPOSES 0 LY',/lt~ I
"50 \-' -:- -~, , - --;:. i '~,' t' -:- , .1'';;krGo"Jt,"A~ 0"':""0\'1 TH'; . j- .,. 1 - ~ --~~. r-r', ]-,1.- :-1 ; ~j -; 1 1 j -r--\-,- +--; r i -I(!gsj~'i.\' fo\'4'~" t e ;-'i~ "50
--j IJ .",,,J'CAI _.l.OVEI, CHONN L CRbss ~EC1'ioN'1 ' " 'J' , j , ,I " ... f - ,I 1 - ,..- j -
~! _~l 0 , I STA H71.-6-2 tbSTA 127+dw I j '~ ~'[I ;It !2 1 I 1 ,': 0 t 10 I 0 1 I, lo!.'
__----L.._ ~ '.~~tr-DT~~;":O::'!"EsAND.DRitPJiIRUCTU.i.ESJ_;_.L_~j"~,_,,,, ",.:!H. ___+~1_1 __~______~~ :;;\ _ ~ "_EL"_,,.____ _L j; . ___~___J"_"~",1SI1_ _1 .!. 1 t_ ~___
126+00 125+00 100 YEAR DISCHAGE. 4200 CFS 120+00 1J5+OO 110+00 105-1-00- 100+00 99+00
10 Y!::AR DESIGN' DISCHARGE: 2050CFS
AVG.VELOCITY= 7,5FPS

GROUNO CONTROL SURVEY BY. CR MOOR!/JASSOCIATLS
AERIAL PHOTOGRAP>lY IlY I<VCEflA 8 ASSOCIArE5,/NC
TOPOGRAPHIC t,lAPPING BY /fU(;tRA a ASSOCl4r~5,INC_
CONTOUR 'NTERVAL , DATE FLOW"" 4-"'-77

DE.~IGNFO~OATE~
DRAWN~DATE~
CHECKED~OATE---.!(~
~EVISED_DATE_

JEFFERSON COUNTY . CITY OF ARVADA CITY OF WESTMINSTER . ADAMS COUNTY

DB~ merrick and company engineers
~ 10855 east bethany drive. denver, col()(ac\o

URBAN DRAINAGE AND FLOOD CONTROL DISTRICT

PLAN So PROFILE
LITTLE DRY CREEK
STA. 99 "'00 TO STA, 126+00

MAJOR DRAINAGEWAY PLANNING
LITTLE DRY CREEK

SHEET 14
Of 30