|
<br />4235
<br />
<br />o YEAR FLOOD
<br />IUNDARY LINE.
<br />
<br />
<br />.,
<br />HEC-2 CROSS SEC~ION
<br />(TIED TO TEA STATI1NING)
<br />i STATIONING \
<br />, ALONG CENTERLINE
<br />OF CREEK
<br />00 '
<br />
<br />~I
<br />~
<br />
<br />:C-2 WEIR/SPLIT FLOW, LINE,
<br />
<br />DYR SPILL FLOODING
<br />.OW NOT CONNECTED
<br />) MAIN CHANNEL
<br />~OFILE
<br />i 100 YEAR SHALLOW FLOW
<br />
<br />z
<br />
<br />~
<br />
<br />~
<br />
<br />,
<br />
<br />~ BASE FLOOD . 'I- ~ . '-~,;:
<br />
<br />7/ ~,V/~ ELEVATION LINE ~ <C 0' .
<br />
<br />Q ~ F~ili~~
<br />;;; (......J :5 0 Z ~ Uw BT CARDS FOR SECTION 420 ARE BASED
<br />_ --- . en 0 <C 0 :I: ON TOP OF NORTH BANK. SINCE THE '-,
<br />,~ q i= . a: HIGHER NORTH BANK CONTROLS THE PRINCE TRIBUTARY 'WEST BRANCH' FLOW ARE GENERALLY LESS THAN TWO FEET -...
<br />~ /I ~.u: a: 0 0 WEIR FLOW OVER THE DITCH IDITCH DEEP; 'EAST BRANCH' FLOW ARE GENERALLY LESS THAN TWO FEET DEEP. EXCEPT "-
<br />U ~ w \!! u.. CONVEYANCE IS NOT CONSIDERED IN FOR THE MAIN LOW FLOW CHANNEL. THE MAIN PORTION OF SHALLOW FLOW IN ,"-
<br />!:: 0 i= g 0 HEC.2 OR HYDROLOGY) BOTH BRANCHES IS MODELED WITH HEC.2;BUT DISCONNECTED SHALLOW SPILLS W -~
<br />o ::l 0 1- Ii! " : ARE NOT MODELED WITH HEC.2. THESE AREAS ARE INDICATED ON THE WORK MAP Z
<br />~ <C u,'~~ ,'. . AS 'SHALLOW DISCONNECTED SPILL' OR 'MINOR STREET FLOODING'. THEY ARE \
<br />"'g ilS.s t; Q MAPPED BASED ON FLOW DEPTHS AT UPSTREAM AND DOWNSTREAM SECTIONS. ~ ~ , \ .... "'--:
<br />
<br />~ ~~5~~ . AREA BEYOND STUDY AND JiVAILABLE DETAILED MAPPING ___\. C5~' ~ ~ _ ~kA7\~ ",6 )(, 1(-
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<br />
<br />
<br />
<br />
<br />\ ~ '~/ /'/:?,?%% V W~~~, / / ~~ " / . PRINCE TRIBUTARY 100-YR OVERFLOWS RESULT IN SHALLOW 2.DIMENSIONAL FLOODING.
<br />/ g ///'/ V d/,0 " / / ~///~ / I TEA RAN SPLIT FLOW MODELS 'PRBERM.DAT" AND 'PRNOBERM.DAT' TO DETERMINE THE
<br />. 'Y,y:' //~y, V, " ~. SPLIT AT FLATIRONS ROAD WITH AND WITHOUT THE SMALL BERM WEST OF PRI Nc.EUPSTREAM Q ~~;,.-
<br />"/ / '/, OF FLA1IRON ROAD. 'PRBERM.DAT" RESULTED IN MORE FLOW TRAVELING NORTH IN PRINCE o '/-$
<br />"EAST BRANCH', WHILE 'PRNOBERM.DAT' RESULTED IN MORE FLOW TRAVELING WEST.NORTH
<br />IN PRINCE 'WEST BRANCH'. TEA JUDGES THAT THE ACTUAL SPLIT IS PROBABLY SOMEWHERE ~
<br />BETWEEN THOSE TWO RESULTS. AT ABOUT 50-50. ,/
<br />
<br />DOWNSTREAM FLATIRON ROAD, SOME FLOW SPILLS FROM THE 'EAST BRANCH" TO .THE 'WEST
<br />BRANCH"; THIS SHALLOW DISCONNECTED SPILL 15 SHOWN ON THE WORK MAP. BUT IN HEc,.2,
<br />ALL THE FLOW CONTINUES IN THE "EAST BRANCH' (THE FLOW RATE DOES NOT DECREASE).
<br />
<br />~
<br />
<br />o YEAR FLOOD
<br />lUNDARY LINES
<br />
<br />~( ~ ~\\~ '~ JO
<br />~ ~ ~ ~~~
<br />/~ . ~-1a ~ ~ ~
<br />. " " ~
<br />"\1 v..::
<br />
<br />:EEK CENTERLINE
<br />
<br />o YEAR FLOOD
<br />UNDARY LINE
<br />IT PLOTI'ED FOR PRINCE TRIB.)
<br />
<br />RIZONTAL SURVEY
<br />NCHMARK
<br />
<br />,
<br />
<br />~~
<br />~~
<br />
<br />...
<br />
<br />=s;~
<br />~~ /'
<br />
<br />LEGEND
<br />
<br />.'@;,
<br />C1
<br />
<br />/
<br />X
<br />
<br />~
<br />~
<br />
<br />"BOX. CULVER
<br />24" )( ~~~RT @5019.12
<br />~ \NSVU~~~~OB';10EJ
<br />
<br />h "aD ~
<br />~ -
<br />'~
<br />, SORO~
<br />
<br />0)
<br />OJ'
<br />Cb
<br />
<br />~
<br />
<br />AERIAL PHOTOGRAPHY BY: ROCKY MOUNTAIN AERIAL SURVEYS
<br />
<br />FLOOD INSURANCE STUDY WORK MAP
<br />PRINCE TRIBUTARY
<br />
<br />10
<br />
<br />~
<br />
<br />~WJx""
<br />J~;:0
<br />rd'
<br />/~
<br />
<br />.' #,....,.1..
<br />...,~: ,1(,1"
<br />,':;" Q
<br />
<br />-~~:--\ "
<br />~,.,
<br />
<br />PRINCE UPSTREAM IOF FLATIRON ROAD IS
<br />AN APPROXIMATE DELINEATION. NO
<br />PROFILES OR DIFFE~ENTIA TION BETWEEN
<br />REGULAR & SHAULOW FLOODING ARE
<br />SHOWN. (1rO-YEAR ONLY)
<br />
<br />PRINCE DOWNSTREAM OF FLATIRON
<br />ROAD IS A DETAILED DELINEATION.
<br />(100- YEAR ONLY)
<br />I .
<br />
<br />I
<br />I
<br />I
<br />I
<br />I
<br />I
<br />
<br />-
<br />
<br />100 50
<br />I
<br />
<br />o
<br />
<br />100
<br />
<br />, 200
<br />
<br />300
<br />,
<br />
<br />SCALE I N rEET
<br />
<br />A SMALL AMOUNT OF FLOW APPARENTLY LEAVES THE 'EAST BRANCH'. CROSSES LONGHORN
<br />STREET. AND POSSIBLY CONTINUES EAST BEYOND THE STUDY AREA AND AVAILABLE '
<br />DETAILED MAPPING. .
<br />
<br />COUNTOUR INTERVAL: 2 FEET
<br />DATE FLOWN: MAY 6, 1990
<br />
<br />~ TAGGART
<br />f~ ENClNEERlNG ASSOCIATES,INC.
<br />tiP' 2480W. 26t11k. Suitt J409
<br />o.r--. CoIoro6o 80211
<br />(JOJ)4.S$~3600 r~ 45$-lt92t
<br />
<br />DRAWN BY: TAB
<br />CHECKED BY: KJC
<br />DATE: 5/20/98
<br />
<br />SHEET NO.
<br />
<br />GROUND CONTROL SURVEY BY; LANDMARK MAPPING
<br />
<br />UPDATED FOR FEMA BY:
<br />
<br />TOPOGRAPHIC MAPPING BY: LANDMARK MAPPING
<br />
<br />TEA PROJ. NO. 40
<br />
<br />~._'----------'-'_._-----_._----,-_._-,,_._,._-
<br />-------- ---- - ---
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