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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Fretn Loss (ft)
C &. E loss (ft)

5.68
0.13

Cum volume (acre-ft)
Cum SA (acres)

41.55
24.42

crystal River . rep
66.45 44.44
16.26 25.10

Warn; ng:
warni og:

The energy equation could not be balanced within the specified number of iterations. The
gr~~~ ~f: ~~~~~~:~ 1~~t~hf:r c~~;s~:;~~i:~~face and continued on with the calculations.
The ve loci ty head has changed by more than O. 5 ft (0.15 m). Thi 5 may i ndi cate the need for
additional cross sections.
The energf loss was greater than 1.0 ft (0.3 II). between the current and previous cross section.
This may lndicate the need for additional cross sections.
~~~~~~ i~: ~~f~~f~~e~t:~t~~e~~~}~~:, c::nb~~~ g:f:e~rV~f~:,S~~:~~~ ~i:e~nd'~:~e~Ot~~~t~~:~e is
not a valid subcritical answer. The program defaulted to critical depth.
CROSS SECTION

Warning:

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warni ng:
Warn; ng:

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RIVER: crystal
REACH: Marble

RS: 13779

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INPUT
Oeseri ption:
station Elevation Data num-
5ta Elev Sta Elev
o 7872 .16 1. 22 7871.76
21.567861.06 28.967857.51
52.07 7850 58.97 7848.33
73.46 7843.13 78.97 7843.1
102.92 7842.71 113.09 7842.68
153.77 7842. 7 158.98 7842. 54
175.96 7840.45 178.99 7838.98
221.61 7835.21 228.99 7836.68
242 7840.01 247.27 7839.93
269 7840.01 276.84 7839.93
292.49 7843.28 296.78 7843.41
326.65 7843.42 329.01 7843.56
387.67 7843.91 428.34 7844.65
463.337845.27 470.11'7845.33
493.21 7846.03 500.26 7846.15
524.32 7847.25 525.677847.43
542.267847.58 546.337847.71
561.42 7848.42 566.3 7848.67
582.71 7849.57 585.337849.94
596.98 7851. 72 603.17 7851. 78
630.24 7852.12 632.42 7852.13
648.45 7852.24 651.22 7852.2
674.977854.42 677.43 7854.9
686.547855.89 689.867856.13
700.94 7858.15 702.13 7858.31
713.13 7859.86 714.1 7860.19
729.37 7864.03 753.28 7863.61
778.08 7860.08 780.24 7860.1
795.33 7861. 36 801.09 7861. 88
812.09 7862.96 817.97 7863.85
834.11 7865.53 840.43 7865.55
855.467867.03 855.92 7867.1
869.387868.28 874.067867.85

164
Sta Elev
8.96 7868.7
31.73 7856.61
62.24 7847.35
82.58 7843.11
118.98 7842.71
163.94 7842.47
186.23 7836.05
235.12 7838.34
255.46 7839.88
277.36 7840.06
299 7843.51
346.99 7843.56
446.95 7845.1
478.42 7845.54
502.59 7846.17
531.07 7847.49
548.19 7847.78
568.97 7848.84
590.4 7850.71
606.69 7851.79
636.26 7852.13
661.25 7852.38
677.85 7855
691.14 7856.27
704.79 7858.73
722.07 7862.52
754.14 7863.44
782.74 7860.24
802.88 7862.08
823.09 7864.26
845.08 7865.84
858.48 7867.42
877.96 7869.14

Sta Elev
11.76 7866.82
38.97 7854.18
68.97 7844.93
88.97 7843.08
138.98 7842.71
168.98 7842. 38
188.64 7834.89
238.99 7839.22
259 7839.91
285.6 7843.07
306.31 7843.62
349.01 7843.55
449.23 7845.15
482.22 7845.66
509.15 7846.2
537.19 7847.43
553.87 7847.96
570.18 7848.9
592.17 7851.02
621.87 7851.88
638.45 7852.12
663.24 7852.68
681.11 7855.02
694.11 7856.81
710.59 7859.44
724.65 7863.45
769.03 7860.65
787.79 7860.7
806.78 7862.43
825.73 7864.79
848.15 7866.17
867.03 7868.46
879.38 7869.55

Sta Elev
16.53 7863.65
48.97 7850.93
72.69 7843.36
98.97 7842.81
143.6 7842.7
171.71 7842.22
220.09 7834.89
240.36 7839.61
265.63 7839.9
287.91 7843.21
309 7843.29
369.01 7843.68
460.22 7845.25
485.96 7845.79
516.72 7846.21
538.78 7847.5
559.19 7848.25
577 .07 7849.38
594.43 7851. 33
624.83 7851.91
643.52 7852.17
668.39 7853.73
684.417855.53
695.87 7857.46
711.9 7859.62
728 7863.87
771.65 7860.18
790.1 7860.87
810.42 7862.79
830.83 7865.23
854.88 7866.97
868.16 7868.53

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Manning's n values nurn- 5
Sta n val Sta n val Sta n val Sta n val Sta n val
0 .06 175.96 .05 188.64 .035 220.09 .05 276.84 .06
Bank Sta: Left Right Lengths: Left Channel Right Coeff ContI'. Expan.
188.64 220.09 465.25 464.83 465.06 .1 .3

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CROSS SECTION OUTPUT Prof; 1 e #lOO-year
~er' H~~~v (~W 7841. 52 element Left OB channel Ri 8~~5g.
1.88 wt. n-Va 1. 0.050 0.035
W.S. Elev (ft) 7839.64 Reach Len. (ft) 465.25 464.83 465.06
crit W.S. (ft) 7839.64 Flow Area (sq ft) 25.84 149.26 50.86
E.G. slo~e (ft/ft) 0.009909 ~~~: ~~Mt) 25.84 149.26 50.86
Q Total (cfs) 2181. 00 127.57 1781. 48 271.94
~~~ ~~~~ ~mS) 62.83 Top W1 dth (ft) 11.00 31. 45 20.38
9.65 AVS' vel. (ft/s) 4.94 11.94 5.35
Max Ch 1 opth (ft~ 4.75 ~~n~: ~~~~~ (ft) 2.35 4.75 2.50
Conv. Tota 1 ~efs 21910.4 1281.6 17896.8 2732.0
length Wtd. ft) 464.93 wetted Per. (ft) 11.99 31.45 20.93
Mi n ch .1 (ft) 7834.89 ~~~:~ (~~~~ m/ft s) 1.33 2.94 1.50
Alpha 1. 30 6.58 35.04 8.04
Fretn Loss ~ft) 5.19 Cum volume (acre-ft) 34.26 59.27 35.52
C &. E Loss ft) 0.03 Cum SA (acres) 20.44 15.81 21.24

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Warn; ng:
Warn; ng:
warning:

The energy equation could not be balanced within the specified number of iterations. The
program used critical depth for the water surface and continued on with the calculations.
~~~s e~:~grn~~~:t:a~h~r~:~dr f~~a~d~i~i:~afOc~o~~' s~~~~:. the current and previous cross section.
During the standard step iterations, when the assumed water surface was set e9ual to critical
depth. the calculated water surface came back below critical depth. This indlcates that there is
not a valid subcrit;cal answer. The program defaulted to erit:ical depth.

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CROSS SECTION OUTPUT P rofi 1 e NFloodway
~;,r' H~~~v (~W 7841. 52 el ement Left 08 channel Ri g~~5g.
1.88 wt. n-val. 0.050 0.035
W.S. Elev (ft~ 7839.64 Reach Len. (ft:) 465.25 464.83 465 . 06
crit W.s. (ft 7839.64 Flow Area (sq ft) 25.84 149.26 50.86
E.G. Slope (ft/ft) 0.009909 :1~: ~~1sjt:) 25.84 149.26 50.86
Q Total (cfs) 2181.00 127.57 1781. 48 271.94
~~~ ~~~~ ~~~~S) 62.83 TOp Wi dth (ft) 11.00 31.45 20.38
9.65 ~Sj.. V~~~t~f~~g 4.94 11.94 5.35
Max Ch1 opth (ft~ 4.75 2.35 4.75 2.50
Conv. Tota 1 ~cfs 21910.4 Conv. (cfs) 1281. 6 17896.8 2732.0
length wtd. ft) 464.93 wetted Per. (ft~ 11.99 31.45 20.93
Min ch E1 (ft) 7834.89 Shear (lb/sq ft 1.33 2.94 1.50
Alpha 1.30 Stream Power (11ft s) 6.58 35.04 8.04
Fretn Loss (ft~ 5.19 Cum volume (acre-ft) 14.64 65.23 10.63
c &. E loss (ft 0.03 Cum SA (acres) 5.65 15.81 4.85

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Warning:

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warni 09:
Warni ng :

The energy equation could not be balanced within the specified number of iterations. The
program used critical depth for the water surface and continued on with the calcuh:tions.
The energ~ loss was greater than 1.0 ft (0.3 m). between the current and previous cross section.
This may lndicate the need for additional cross sections.

~~~~~~ ~~: ~;f~~t:~e~t:~t~~e~~~}~~:. c::nb;~~ ~f::e~r~~i~~ls~~::~~ w~i~efn~~:~e~o t~~~t~~:~e is
not a valid subcritical answer. The program defaulted to critical depth.
CROSS SECTION OUTPUT Profile #10-year

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~er' H~~~v (~g>

W.S. E1ev (ft)
crit W.S. (ft)
E.G. slo~e (ft/ft)
Q Total (cts)
TOp wi dth (ft)

7840.55
1.67
7838.88
7838.88
0.010863
1657.00
58.22

Element
wt. n-Va l.
Reach len. (ft)
Flow Area (sq ft)
~~: ~~Mt)
Top W1 dth (ft)

left 08
0.050
465.25
18.06
18.06
81.87
9.39

c~~8~~ 1 Ri 8~~5g8
464.83 465.06
125.31 36.43
125.31 36.43
1393.55 181.59
31.45 17.38
Page 35

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