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<br />1 X-2
<br />1 RALSTON CREEK RALSTON CREEK
<br /> FLOOD PLAIN AND FLOODWAY REFERENCE DATA FLOOD PLAIN AND FLOODWAY REFERENCE DATA
<br />1 100-Year 100-Year 100-Year 100-Year
<br /> Cross Flood Thalweg Flood Floodway Cross Flood Thalweg Flood Floodway Width (ft) Floodway
<br /> Section Station D i scha rge Elevation E I evat ion Floodway Width (ft) Elevation Section Station Discharge E I evat i on E I evat ion ,'; .'. ~': Elevation
<br />I Number (ft. ) (cfs) (ft) (ft. ) ,'; ,. ;'. Number (ft. ) (cfs) (ft) (ft. ) Total Left ~ (ft. )
<br /> Total Left ~ (ft. )
<br /> 1709 166+55 7, lOO 5345. 5 5355.6 660 560 100 5356.0 15017 294+80 4,800 5438.0 5445.7 340 20 320 5446.2
<br />1 17010 170+50 7,100 5347.6 5357.5 600 520 80 5358.0 15020 297+05 4,800 5440.2 5448.7 190 60 130 5449.2
<br /> 17011 173+90 7,100 5349.0 5358.2 530 450 80 5358.7 15021 302+20 I, ,800 5447.0 5453.2 100 \0 90 5453.7
<br /> l7014 175+45 7,050 5350.0 5358.8 480 410 70 5359.3 15022 307+20 I, ,800 5451.0 5456.9 120 50 70 5457.4
<br /> 17015 180+25 6,950 5353.0 5363.3 550 210 340 5363.8 15023 312+75 4,800 5457.2 5464.7 120 20 100 5465.2
<br />I 17016 184+75 6,950 5356.0 5366.0 540 160 380 5366.5 15024 318+1 S 4,800 5462.0 54()9.6 130 40 90 5470. I
<br /> 17017 188+25 6,950 5358.0 5369.6 550 160 390 5369.6 15025 322+50 4,800 5468.0 54]3.8 110 100 10 5474.2
<br />I 17020 189+80 6,800 5359.0 5370.5 550 160 390 5370.5 15026 327+50 4,800 5471 .2 5478.8 90 30 60 5479.3
<br />17021 193+90 6,800 5361.0 5373.1 570 180 390 5373.5 15027 330+80 4,850 5473.8 5481.1 200 60 140 5481.9
<br /> 17022 199+60 6,600 5364.0 5377.2 420 200 220 5377.4 15028 335+50 4,850 5477.2 5483.2 150 60 90 5483.7
<br />1 17023 205+10 6,600 5368.0 5379.0 240 170 70 5379.6 15029 341+00 I, ,850 5482.0 5490.2 230 40 190 5490.7
<br />17024 209+70 6,600 5371.0 5380.4 220 30 190 5380.4 15030 345+30 4,850 5486.0 5492.2 120 90 30 5492.7
<br /> l7025 213+50 6,400 5373.0 5381.4 150 30 120 538 1.4 15031 349+80 4,850 5490.5 5498.2 90 50 40 5498.7
<br />1 17028 215+15 6,400 5374.0 5383.6 190 30 160 5383.6 15032 355+80 4,850 5496.5 5506.0 170 50 120 5506.5
<br />17029 219+75 6,400 5377.5 5385.4 180 30 150 5386.1 15033 359+40 4,850 5501.0 5509.3 90 30 60 5509.8
<br />1 17030 224+20 6,400 5379.5 5386.4 120 30 90 5386.7 15034 364+90 4,350 5507.0 5514.0 170 30 140 5514.5
<br />17031 228+80 6,300 5383.5 5392.1 160 50 110 5392. I 15035 370+60 4,850 5511. 5 5517.8 100 80 20 5518.3
<br />17032 231+50 6,300 5385.5 5396.2 250 180 70 5396.2 15036 376+ 3n 4,850 5518.0 5522.6 140 l60 -20 5523. I
<br /> 17033 232+00 6,300 5386.0 5397.0 280 150 130 5397.0 15037 381+70 4,850 5523.6 5527.0 60 60 0 5527.5
<br />1 17034 232+60 6,300 5386.5 5397.2 230 60 170 5397.2 15038 383+80 I, ,850 5526.0 5530. I 110 80 30 5530.6
<br /> 17035 234+10 6,300 5387.0 5397.9 250 130 l20 5398.3 15041 385+20 11,850 5528.0 5537.0 340 220 120 5537.5
<br />1 17036 238+85 6,300 5391.0 5401.9 120 80 40 5402. I 15042 389+60 I, ,850 5531.5 5537.5 l80 130 50 5538.0
<br />17037 243+15 6,300 5395.0 5404.1 170 130 40 5404.4 15043 395+35 11,850 5537.0 5542.8 90 60 30 5543.3
<br /> 17040 244+75 6,300 5397.0 5407.4 190 90 100 5408.0 15044 400+60 4,850 5544.0 5549.2 130 100 30 5549.7
<br />. . 17041 249+30 6,300 5400.0 5407.8 90 30 60 5408.2 15045 405+25 I, ,850 5546.0 5552.3 60 40 20 5552.8
<br />I
<br />17042 254+10 6,200 5406.0 5413. I 160 100 60 5413. I 15046 410+10 I, ,850 5549.0 5559.1 80 40 40 5559.6
<br /> 17043 258+65 6,200 5407.6 5415.4 230 110 l20 5416.2 15049 41l+80 4,850 5560.0 5567.6 70 50 20 5568.8
<br />1 15050 413+50 4,880 5561.0 5567.6 140 80 60 5568.8
<br />1501 261+65 6,200 5410.0 54l6.7 110 80 30 5417.2 l5051 41 8+60 I, ,850 5565.6 5570.8 140 100 40 5571.3
<br /> 1502 264+50 4,800 5412.0 5419.0 270 60 210 5419.5 15052 423+60 4,850 5570.0 5575.4 lOO 80 20 5575.9
<br />I 1503 266+65 4,800 5414.0 5422.8 380 70 310 5423.3
<br />1508 268+40 4,800 5417.0 5428.6 770 340 430 5429.1 l5053 427+70 !, ,850 5575.0 5580.6 130 90 40 5581. I
<br />1509 271+75 4,800 5421.0 5428.7 510 370 140 5429.2 15054 428+30 4,850 5575.0 5581.2 80 40 40 5581.7
<br /> 15055 428+90 1:,850 5576.0 5583.7 100 70 30 5584.5
<br />I. 15010 275+40 4,800 5424.0 5428.9 200 30 170 5429.4 15056 429+40 ~l, 850 5576.0 5584.4 160 ]10 50 5585.0
<br />15011 279+10 4,800 5425.0 5432.3 310 130 180 5432.8 15057 434+70 1:.,850 5584.0 5589.4 120 20 100 5589.9
<br /> 15012 282+80 4,800 5429.0 5434.7 310 60 250 5435.2
<br />I 15013 285+35 4,800 5430.5 5438.6 260 -10 270 5439. I 15058 438+80 4,850 5590,0 5594.7 160 20 140 5595.2
<br />15016 291+10 4,800 5436.0 5442.3 350 50 300 5442.8 15059 443+00 4,850 5594.0 5598.6 290 40 250 5599.1
<br /> ~ .; 15062 444+70 ",900 5595.5 5603.8 370 50 320 5604.3
<br /> }': 15063 449+40 4,900 5599.3 5607.0 230 20 210 5607.5
<br />I l5064 456+75 I, ,900 5611.0 5616.9 l50 80 70 5617.4
<br />.. From center I ine of channel looking downstream
<br /> , .'. Frum center 1 ine of channel looking downstream
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