FLOOD10515

• County: Gunnison
• Community: Marble and Vicinity
• Stream Name: Crystal River
• Basin: Gunnison
• Title: Floodplain Information Report Crystal River - Technical Appendix
• Date: 5/1/2004
• Prepared For: Marble and CWCB
• Prepared By: ICON Engineering, Inc.
• Floodplain - Doc Type: Floodplain Report/Masterplan

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Alpha
Fret" LoSS
C&ELOSS

(ft)
(ft)

1.49
0.11
0.03

Stream Power (1b/ft 5)
C... vo1tone (acre-ft)
Cum SA (acres)

0.16
73.96
32.11

c~~:~alRiver{~G
90.79 66.29
20.72 32.18

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warning: The conveyance ratio (upstream conveyance divided by downstream conveyance) is less than
0.7 or greater than 1.4. This may indicate the neeCl for additional cross sections.

CROSS SECTION

RIVER: crystal
REACH: Marble

RS: 19361

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IHPUT
Description:
station Elevation Data num~ 201
sta Elev 5ta Elev Sta Elev 5ta Elev Sta elev
07965.19 6.12 7960.84 6.97960.38 7.097960.17 7.187960.17
8.22 7960.15 17".42 7959.92 20.38 7959.88 21.01 7959.86 21.64 7959.53
27.42 7956.29 34.197952.89 37.327951.36 38.127950.97 38.2 7950.97
44.197951.12 47.42 7951.18 51.27951.29 54.087951.38 55.867950.35
57.42 7949.4 60.527947.58 67.437943.57 70.527941.75 77.437937.72
80.527935.89 87.437931.83 91.21 7929.6 97.357925.99 97.657925.99
104.09 7926.08 107.43 7926.1 127.43 7926.1 140.52 7926.53 147.43 7926.62
167.437926.75 190.527926.75 197.437926.71 227.437926.71 230.52 7926.62
240.52 7926.36 247.43 7926.31 260.52 7926.31 267.43 7926~27 280.52 7926.1
286 7925.99 287.69 7925.95 289.27 7925.95 291.74 7925.89 299.57 7925.77
303.757925.77 310.297925.85 311.887925.91 313.4 7926 323.317928.21
328.32 7929.29 335.18 7929.23 339.95 7929.23 347.06 7929.02 347.19 7929.02
347.47929.01 356.887928.92 357.527928.92 363.227925.76 365.167924.69
406.27 7924.3 407.127924.29 407.327924.31 420.787926.14 421.547926.24
422.34 7926.52 423.83 7926.96 428.8 7928.42 429.8 7928.4 440.15 7928.29
441.3 7928.28 442.04 7928.28 446.61 7928.44 448.61 7928.48 451.49 7926.98
452.65 7926.38 453.09 7926.36 458.7 7926.28 460.49 7926.26 461.85 7926.24
465.787926.11 470.267926.02 477.25 7925.94 477.667925.94 484.747925.83
489.53 7925.9 491.98 7925.93 495.8 7925.97 499.22 7926.02 501.4 7926.04
506.46 7926.21 513.27 7926.37 513.88 7926.39 517.64 7926.5 521.85 7927.48
525.15 7928.15 527.067928.57 529.997929.26 532.45 7929.69 536.837929.76
537.437929.77 543.34 7929.76 547.087929.71 554.647929.91 557.087929.95
564.647930.15 567.087930.24 574.647930.34 577.087930.44 587.087930.57
594.647930.77 597.087930.84 604.647931.04 607.08 7931.1 614.64 7931.3
617.087931.36 624.647931.56 627.087931.64 647.087932.56 654.647932.66
657.08 7932.7 664.647932.79 667.087932.79 674.64 7932.9 677.087933.01
687.087933.14 694.647933.44 697.087933.52 704.647933.83 707.087933.92
714.647934.12 717.087934.18 724.647934.38 727.087934.41 734.647934.61
737.08 7934.67 744.64 7934.87 747.08 7934.89 764.647935.12 784.64 7935.52
787.087935.56 794.647935.96 797.087936.06 807.087936.59 814.647936.79
817.087936.98 824.647937.18 827.087937.25 834.647937.84 837.087938.04
844.647938.63 847.087938.68 864.647939.84 867.087939.92 884.647940.15
887.087940.28 907.08 7941.2 914.64 7941.6 917.087941.75 924.647942.15
927.087942.27 934.647942.67 937.087942.83 947.087943.36 964.647944.17
967.087944.27 974.647944.72 977.087944.85 984.647945.29 987.087945.44
994.64 7945.64 997.08 7945.691004.647945.89 1007.08 7945.95 1014.64 7946.5
1017.087946.631027.087947.361034.647947.85 1037.08 7948.16 1047.08 7948.82
1054.647949.221057.087949.221064.647949.62 1067.08 7949.74 1074.64 7949.84
1077.087949.881084.647949.981104.64 7950.91107.087951.081124.647952.01
1147.087953.041154.647953.441157.087953.561174.64 7954.49 1177.08 7954.6
1179.3 7954.72

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Manning' 5 n values nu.... 5
Sta n val Sta n val Sta n val Sta n val Sta h val
0 .06 97.35 .05 365 .16 .035 406.27 .05 517.64 .06
Bank 5ta: left Right Lengths: left chaRne 1 Right Coeff Contr. Expan.
365.16 406.27 461. 26 577 . 52 747.59 .1' .3
Ineffective Flow nUIlI- 2
Sta l Sta R Elev Permanent
0 328.32 7929.29 F
446.61 1179.37928.44 F
CROSS SECTION OUTPUT Profile 11OO-year
E.G. E1ev (ft) 7931. 26 El ement Left 08 channel .i8~~5~B
vel Head (ft) 0.02 wt. n-Va 1- 0.050 0.035
w.~.Elev ~ft~ 7931. 24 Reach Len. (ft) 461. 26 577.52 747.59
Cnt W.S. ft 7928.40 Flow Area (sq ft) 1222.97 277 . 28 645.33
E.G. slope (ft/ft) 0.000136 :f~: f~~sjt) 1222.97 277.28 645.33
Q Total (cfs) 2181.00 1138.41 490.61 551.99
~~~ ~~~~ ~ms) 523.94 TOp wi dth ~ft) 276.73 41.11 206.10
1.02 AVS' vel. ft/s~ 0.93 1.77 0.86
Max ch 1 Dpth (ft) 6.95 ~~n~: ~~~~~ (ft 4.42 6.74 3.13
Conv. Totalfcfs) 186813.2 97509.9 42022.7 47280.5
length wtd. ft) 547.95 wetted Per. (ft~ 279.64 41.11 207.44
Min ch E1 (ft) 7924.30 shear (lb/sq ft 0.04 0.06 0.03
Alpha 1. 30 Stre... Power (1 1ft s) 0.03 0.10 0.02
Frctn Loss (ft) 0.09 Cum volume (acre-ft) 53.51 79.09 50.68
C &, E LosS (ft) 0.00 Cum SA (acres) 25.65 19.91 27.13

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Note:

Multiple critical depths were found at this location. The critical depth with the lowest. valid. water
surface was used.

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CROSS SECTION OUTPUT Profile #Floodway
~e~' H~~~v (m) 7931. 83 el ement Left 08 channel .i 8~~5g8
0.31 Wt. n-val. 0.050 0.035
W.~.Elev~ft~ 7931.51 Reach len. (ft) 461. 26 577.52 747.59
Crlt w.s. ft 7928.40 Flow Area (sq ft) 37.33 288. 50 243.68
E.G. slope (ft/ft) 0.001101 Area ~s? ft) 37.33 288. 50 243.68
Q Total (cfs) 2181.00 Flow c s) 79.14 1489.78 612.08
~~~ ~~~~ ~mS) 103.00 TOp wi dth (ft) 8.16 41.11 53.73
3.83 AVS' vel. (ft/S~ 2.12 5.16 2.51
Max Ch 1 Opth (ftl 7.22 Hy r. Depth (ft 4.57 7.02 4.54
Conv. Total (cfS 65725.2 conv. (cfs) 2384.8 44895.1 18445.3
length wtd. (ft) 576.90 wetted Per. (ft~ 11.85 41.11 59.95
Min Ch E1 (ft) 7924.30 shear (lb/sq ft 0.22 0.48 0.28
Alpha 1.37 Stream Power (1 1ft s) 0.46 2.49 0.70
Frctn Loss (ft~ 0.47 Cum volume (acre-ft) 22.92 85.59 17.77
c & E loss (ft 0.03 Cum SA (acres) 8.27 19.91 7.00

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warning: The cross section had to be extended vertically during the critical depth calculations.
Note: Multiple critical depths were found at this location. The critical depth with the lowest, valid. water
surface was used.

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~e~' H~~~V (~fP

w.~. E1ev (ft)
Crlt w.s. (ft)
E.G. Slope (ft/ft)
Q Total (cfs)
Top width (ft)
vel Total (ft/s)
Max chI opth (ft)
Conv. Total (cfs)
length wtd. (ft)

Profi 1 e 'lO-year :._

7929.91 Element
0.03 wt. n-val.
7929.88 .each len. (ft)
7927.80 Flow Area (sq ft)
O. 000236 Area (sq ft)
1657.00 Flow (cfs)
462 . 86 TOp wi dth (ft)
U~ AVS' vel. ~f~~S~
107799.6 ~~n~: ~~~~) t
544.75 wetted Per. (ft)

left 08
0.050
461.26
848.89
848.89
819.63
274.43
0.97
3.09
53323.1
276.97

C~~3~~1 .i8~~5gB
577.52 747.59
221.48 404.19
221.48 404.19
444.16 393.21
41.11 147.32
2.01 0.97
5.39 2.74
28895.7 25580.8
41.11 148.65
page 17

CROSS SECTION OUTPUT

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