FLOOD07727

• County: Jefferson
• Community: Arvada
• Stream Name: Ralston/Leyden Creek
• Basin: South Platte
• Title: Major Drainageway Planning
• Date: 8/1/1977
• Prepared For: Arvada
• Prepared By: UDFCD
• Contract/PO #: &&
• Floodplain - Doc Type: Floodplain Report/Masterplan

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GARRISON STREET

100 Year
Stu 140+00 10 Sta.147+00
Design 0iIdlarvI 8000 cia
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AverogI Velocity 12.2'"

TRUCTURE IMPROVEMENTS

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TYPE OF
IMPROVEMENT

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1OO'llridQe&roadway
$klbjl;ZCllion melISI.I'ts

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510.IIB...00 to Sta. 140.00
0Mign OildlcWge 8000 cf,
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..... Velocity 9.6 tps

5 Year
510.140.00 to SUt. 147+00
DMiQn DischarOl 4500 cf.
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AMlrage Velocity 10.0 fps

EXISTING STRUCTURE
OPENING AREA 1FT')

PROPOSEO STRUCTURE
OPENING AREA (fT-)

PROPOSED LON CHCR>
ELEVATION" (FT)

EXISTING CHANNEL
INIIERT ELE\ATION. (FT

PROPOSED a-tAffiEL
MlERT ELE'#ITION-(FT

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TYPICAL IMPROVED CHANNEL CROSS SECTION
STA. 144+00 to I~+OO

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NOTt' This drawing" a maater pIonning
stiNt .~M-.I;'... pNiminary and /XInClIptuaI
tn9ineerin!l. It'" not 1M \Md for
construction purJ)OMI.; subjtct to change.

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5332.5

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TYPICAL IMPROVED CHANNEL CROSS SECTION'
STA. 155+00 to 202+00

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NOTE' For 1OO}<<Ir disc:har9I exi.ting
chcInMI conditiDN and other flon, ..
Mocter Plan ~t.

50'
TYPICAL IMPROVED CHANNEL CROSS SECTION
STA.141.oo to 144.00

REMARKS

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5330

~340

~34

5330

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5320

5320

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147+00

145.00

140+00

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130+00

125<00

120.00

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118000

5310

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UKItlNDCONTIIOLSUItVUIV
AlItIAL ..HOTDOItIll..HV 'T
TOfIO.It.....Hle ........1.. ,v
CO.TOUIt INTEItVAL 2'

,.."....&1. INC
N"U~'.. .........
.... cn~'.. <GLO".O

Dl.18IIl~DATEL::f.:.2.2
WRIGHT-McLAUGHLIN ENGINEERS DIt...W/II D...n 4:t/1:L
2..20 ALCOTT STRlET D{""~R COLORAOO 110211 CIIllClllO DtoTl ~
nUPHONf .303'''51111201 III!:YISI!:D _DATI!:..::L.1L::2J

URBAN DRAINAGE AND FLOOD CONTROL DISTRICT

MAJOR DRA1NAGEWAY PLAJ\NING

RALSTON
510. 118+00

CREEK
10 510. 147+00

SHEET
0'

20
40

CITY OF ARVADA

JEFFERSON COUNTY

RALSTON CREEK / LEYDEN CREEK

OAf[ now.. 8130174