FLOOD02662

• County: Jefferson
• Community: Arvada
• Stream Name: Ralston Creek
• Basin: South Platte
• Title: Flood Insurance Rate Map Revisions for Westwoods Golf Course
• Date: 4/15/1992
• Prepared For: Arvada
• Prepared By: Jeff Crane
• Floodplain - Doc Type: Floodplain Report/Masterplan

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. RALSTON CREEK
i FLOOD PLAIN AND FLOODWAY REFERENCE DATA
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~~. 100-Year 100-Year
.' Cross Flood Thalweg Flood Floodway Width (ft) Floodway
.', Sect ion Station D i s cha rge E leva t i on Elevation Elevation
Number (ft. ) (cfs) (ft) (ft. ) .; :': .. (ft. )
" Total Left R i ght
;,;..
(.. 15065 463+50 4.900 5619.5 5627.1 120 40 80 5627.6
~ 15066 470+50 4.900 5627.8 5635.5 90 30 50 5636.0
, 15067 473+80 4.900 5630.0 5639.8 60 20 40 5640.3
t, 15068 475+95 4.900 5635.0 5643.0 100 50 50 5643.6
.~ 15072 478+20 4 ;900 5643.5 5651.7 330 40 290 5652.2
i
. 478+65 4.900 5644.0 5651.7 5652.2
15073 320 30 290
15074 483+80 4.900 5651.2 5656.5 320 10 310 5657.0
,. 15076 485+05 4.900 5653.7 5659.1 260 40 220 5660.3
15077 49~+02 5.000 5659.8 5665.5 100 20 80 5666.0
d' 15078 497+25 5.000 5668.0 5675.5 70 40 30 5676.0
t.
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f' 15079 505+1., 5.000 5678.5 5688.7 90 60 30 5689.2
15080 510+00 5.000 5687.0 5694.5 90 40 50 5695.0
. 1508! 510+70 5.000 5688.8 5696.0 120 - . 70 50 5696.5
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I' 15082 511+05 5.000 5689.6 5696.8 130 90 40 5697.0
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,. 12001 515+30 5,000 5698.0 5705.8 100 50 50 5706.3
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t 12002 521+30 5.000 5706.7 5713.2 130 100 30 5713.7
. 12003 527+90 5.000 5716.9 5723.4 180 20 160 5723.9
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," 12004 533+60 5.000 5726.0 5732.4 100 40 60 5732.9
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~;. 12005 538+20 5.000 5731.0 5739.4 90 30 60 5739.9
r
r 12006 544+92 5.000 5743.0 5750.1 140 20 120 5750.6
; 12007 550+30 5.000 5748.7 5758.9 80 60 20 5759.4
" 12008 557+30 5.000 5762.0 5771.5 90 40 50 5772.0
12009 563+0" 5.000 5771.0 5779.3 120 30 90 5779.8
12010 567+00 5.000 5780.5 5785.8 200 140 60 - 5786.3
12011 570+10 5,000 5785.3 5789.0 170 70 100 5789.5
12012 574+00 5.000 5790.0 5793.3 100 30 70 5793.8
12013 576+10 5.000 5792.7 5796.8 70 40 30 5797.3
12014 576+60 5,000 5795.0 5798.1 90 80 10 5798.8
1601 0+50 6,200 5408.5 5416.7 110 50 60 5417 . 2
1602 9+40 2,600 5418.5 5423.8 140 40 100 5424.9
1603 14+30 2,600 5420.0 5428.0 130 30 100 5428.5
160& 16+20 2,600 5423.8 5429.9 250 30 220 - 5430.5
1607 16+40 2,600 5424.0 5429.9 250 30 220 5430.5
1609 20+00 2,600 5427.0 5432.6 150 130 20 5433. I
1610 23+70 2,600 5429.0 5435.3 120 60 60 5435.8
1611 27+35 2.600 5431.0 5437.0 150 130 20 5437.5
~': From center line of channel looking downstream