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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~~f' H~!~\}W

IN.S. Elev (ft)
Crit W.S. (ft)
E.G. slope (ft/ft)
II Total (cfs)
Tap wi dth (ft)
Vel Total (ft/s)
Max ch 1 Dpth (ft)
Conv. Total (cfs)
Length wtd. (ft)
Min ch El (ft)
Alpha
Fretn loss (ft)
C &. E loss (ft)

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7865.98
0.99
7864.99
7864.99
0.D16567
1657.00
114.18
7.02
3.01
12873.6
550.62
7861. 98
1.29
7.56
0.02

E1 ement
wt. n-val.
Reach Len. (ft)
Flow Area (sq ft)
Area (sq ft)
Flow ~cfs)
Tap Wl dth (ft)
Avg. vel. (ft/s)
Hydr. Depth (ft)
Conv. (cfs)
weued Per. (ft~
shear (1b/sq ft
stream Power (1 1ft s)
Cum volume (acre-ft)
cum SA (acres)

left 08
0.050
552.68
158.32
158.32
950.99
80.21
6.01
1.97
7388.4
80.46
2.04
12.22
27.88
18.77

crystalRiver.rep

c~~S;~ 1 Ri8~~5g8

542.09 587.67
49.70 28.13
49.70 28.13
545.99 160.02
17.42 16.55
10.98 5.69
2.85 1.70
4241.9 1243.2
17.44 16.86
2.95 1.73
32.38 9.82
53.49 26.74
16.57 18.90

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.
Warning: 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 additionalcros$ sections.
Warning: During the standard step iterations. when the assumed water surface was set egual to critical
depth. the calculated water surface came back below critical depth. This indlcates that there is
not a valid subcritical answer. The program defaulted to critical depth.

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.
warning: i~rs e~:~grn~~~:t:~h~r~:~ar f:~a~d~i~i~~afOc~o=~' s~~~~~. the current and previous cross section.

warning: ~~~:g~ ~~: ~;f~~f~~e~t:~t~~e~~~}:~:. C::nb~~~ &:f::e~r~f~~ls~~:~~~ w~i:efn~?~:~e;o t~~~t~~:~e is
not a valid subcritical answer. The program defaulted to critical depth.

CROSS SECTION OUTPUT Profi 1 e #500-year

7866.91 Element
1.25 wt. n-val.
7865.66 Reach Len. (ft)
7865.66 Flow Area (sq ft)
Oi~i~?~~ ~{~ ~~Mt)
119.30 Tap WI dth (ft)
8.01 Avg. vel. (ft/s)
3.68 Hydr. Depth (ft)
19838.7 Cony. (cfs)
555.31 weued Per. (ft~
7861. 98 shear (lb/sq ft
1. 25 Stream Power (11ft s)
6.55 Cum volume (acre-ft)
0.10 Cum SA (acres)

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CROSS SECTION OUTPUT

~~~. H~~~v (m)

w.s~ Elev (ft)
crit W.S. (ft)
E.G. slope (ft/ft)
II Total (cfs)
Top width (ft)
vel Total (ft/s)
Max ch 1 opth (ft)
Conv. Total (cfs)
Length wtd. (ft)
Min ch El (ft)
Alpha
Frctn Loss (ft)
C &, E LOSS (ft)

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~~~. H~~~v (m)
w.S. Elev (ft)
crit W.S. (ft)
E.G. Slope (ft/ft)
II Total (cfs)
~~~ ~~i~ ~mS)
Max Chl opth (ft)
Conv. Total (cfs)
Len9th wtd. Cft)
Min ch El (ft)
Alpha
Frctn Loss (ft)
C &, E LoSS (ft)

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warni ng:

Profile '50-year
7866.40 Element
1.12 wt. n-Val.
7865.29 .each Len. (ft)
7865.29 Flow Area (sq ft)
0.016583 Area (sq ft)
2031.00 Flow ~cfs)
116.43 Tap Wldth (ft)
7.53 Avg. Vel. (ft/s)
157~i~~ ~~~~: rc~~~ (ft)
554.35 wetted Per. (ft)
786i: ~~ ~~~:~ (~~ m/ft s)
6.49 Cum volume (acre-ft)
0.09 Cum SA (acres)

Left OB
0.050
552.68
182.02
182.02
1184.15
81.85
6.51
2.22
9195.4
82.13
2.29
14.93
34.U
20.73

Left 08
0.050
552.68
212 .99
,212.99
1488.99
83.95
6.99
2.54
11745.4
84.26
2.54
17.73
43.54
25.20

channel
0.035
542.09
54.80
54.80
642.74
17.42
11.73
3.15
4991.1
17.44
3.25
38.16
59.83
16.57

channel
0.035
542.09
61. 31
61.31
762.85
17.42
U.44
3.52
6017.5
17.44
3.53
43.89
67.62
16.57

Ri8~~5gB

587.67
33.06
33.06
204.12
17.15
6.17
1.93
1585.0
17.53
1.95
12.05
34.72
22.25

Ri8~85~B
587.67
39.61
39.61
263.16
17.93
6.64
2.21
2075.8
18.39
2.16
14.36
46.04
26.31

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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.
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.

~~~~g~ ~~: ~~f~~t~~e~t:~t~~e~~~}:~:. c::nb~~: g:f~:e~r~~f~~ 1 s~~:~~~ w~~i :eln~?~:~e~o t~~~t~~:~e 1 s
not a valid subcritical answer. The program defaulted to critical depth.
CROSS SECTION

warning:

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RIVER: crystal
REACH: Marble

RS: 14378

INPUT
oeseri pti on:
station Elevation Data nu",,",
5ta Elev Sta Elev
o 7902.98 .28 7902.87
17.65 7896.05 18.7 7895.56
35.05 7888.51 36.197888.02
51.33 7883.6 57.55 7881.74
72.947874.14 75.39 7872.5
94.54 7854.44 95.42 7853.81
117.37 7850.87 117.73 7850.97
129.69 7850.41 130.19 7850.26
168.87 7849 172.58 7849.6
188.24 7852.35 191. 33 7852.32
222.15 7852.01 240.48 7851.55
252.98 7850.4 257.52 7849.46
273.53 7850.48 274.597850.69
294.08 7852.83 304.35 7852.58
331.5 7851.96 333.06 7851.81
346.48 7853.86 346.96 7853.94
376.287853.93 381.79 7853.9
400.86 7853.92 405.99 7855.48
423.36 7865.65 427.65 7868.99
448.2 7873.71 456.61 7874.3
473.22 7876.14 475.36 7876.42
488.32 7875.38 489.86 7875.44
506.48 7876.6 509.85 7876.84
530.47882.94 531.18 7883.38
546.86 7880.21 547.78 7880.33

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Manning I S n val ues
Sta n val Sta
o .06 104.32

125
Sta Elev
3.14 7901.6
18.87 7895.5
39. 72 7887
58.93 7881.35
80.14 7B69.33
97.15 7852.9
118.43 7850.92
132.33 7849.92
180.36 7850.87
198.92 7852.21
242.7 7851. 5
262.42 7848.96
284.51 7852.56
306.98 7852.57
335.18 7852.18
349.24 7853.93
386.55 7853.9
407.17855.81
430.78 7871. 54
458.47 7874.44
476.41 7876.26
492.23 7875.62
515.77 7877.77
531.39 7883.5
570.08 7880.07

Sta El ev
6.65 7900.24
19.07 7895.43
44.13 7885.75
61.74 7880.61
83.35 7866
104.32 7849.11
120.77 7850.73
135.94 7848.9
181.05 7850.98
201.6 7852.19
247.55 7851.48
265.83 7849.05
286.81 7852.98
314.63 7852.66
340.23 7852.98
365.17 7853.84
390.11 7853.85
415.05 7859.45
433.53 7873.73
464.92 7875.08
478.14 7875.98
498.17 7876.04
519.92 7878.26
535.78 7881.59
571.46 7880.5

n_ 5
n val Sta
.05 135.94

n val Sta
.035 168.87

Bank Sta: Left Ri ght Lengths: Left channel
135.94 168.87 535.21 599.19
Ineffective Flow num: 1
Sta l Sta R Elev Permanent
188.24 578 7852.35 F

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CROSS SECTION OUTPUT

~~~. H~~~v (m)

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~~~~~

Prof; 1 e li00-year
7853.47 Element
0.85 wt:. n-val.

n val Sta
.05 286.81

coeff Contr.
.1

Left OB
0.051

Sta Elev
9.11 7899.3
29.73 7890.6
47.12 7885.02
71.27 7875.23
93.23 7855.72
110.5 7848.98
125.87 7850.68
165.06 7849
185.63 7851. 85
207.23 7851.92
248.887851.21
273 7850.37
289.01 7852.92
324.9 7852.81
345.45 7853.66
373.48 7853.93
396.83 7853.92
417.37 7860.77
439.98 7873.67
468.75 7875.54
482.77 7875.21
499.57 7876.13
521.26 7878.48
539.04 7879.87
578 7881. 92

n val
.06

Expan.
.3

C~~ml 'i8~~5gB

Page 33