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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CROSS SECTION

RIVER: crystal
REACH: Marble

RS: 17475

INPUT
Oeser; ption:
Stat; on el evat'i on Data numa
Sta Elev Sta Elev
o 7942.33 6.23 7940.88
21.417936.05 21.62 7935.98
43.46 7929.73 44.847929.34
59.37 7923.1 65.29 7919.02
76.27913.62 87.997908.41
139.84 7909.29 141.65 7910.77
156.147923.29 160.66 7923.U
170.56 7924 173.26 7924.41
183.88 7922.61 185.4 7923.04
198.377925.69 203.567925.92
219.35 7927.01 224.5 7927.75
237.947932.05 238.56 7932.25
264.377932.39 272.147932.41
292.14 7931.9 302.14 7931.55
322.14 7932.21 323.81 7932.28
345.24 7933.24 352.14 7938.52
420.86 7941.62 427.69 7941.64

Bank Sta: Left Ri ght Lengths: Left Channel R;ght coeff COntI". Expan.
87.99 131.71 515.18 591.49 626.76 .1 .3
CROSS SECTION OUTPUT Profile 'lOO-year
~~f' H~~~v C~n> 7914.05 Element Left 08 channel R;8~~6gB
1.63 wt. n-va.l. 0.060 0.035
W.S. Elev ~ft~ 79U.42 Reach Len. (ft) 515.18 591.49 626.76
crit W.S. ft 7912 .20 Flow Area Csq ft) 18.17 181.11 35.71
E.G. slo~e Cft/ft) 0.009623 Area ~s~ ft) 18.17 1B1.11 35.71
Q Total Ccfs) 2181.00 Flow C 5) 66.09 1945.33 169.59
TOf wi dth ~ ft) 64.64 Tap Wldth ~f1:) 9.07 43.72 11.85
ve Total ft/s) 9.28 AV9' vel. f1:/s~ 3.64 10.74 4.75
Max Chl Dpth (ft~ 4.27 Hy r. De~th (ft 2.00 4.14 3.01
Conv. Total ~cfs 22233.4 Conv. (cfs) 673.7 19830.9 1728.8
Length Wtd. ft) 589.20 Wetted Per. (ft~ 9.91 43.72 13.06
M;n Ch El (ft) 7908.15 shear (lb/sq ft 1.10 2.49 1.64
Alpha 1.22 Stream Power (1 /ft s) 4.00 26.73 7.80
Frctnloss ~ft~ 5.95 Cum volume (acre-ft) 39.70 70.65 41.09
c&.Eloss ft 0.01 cum SA (acres) 22.78 18.49 24.28

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Manning' 5 n values
Sta n val Sta
o .06 87.99

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num-
n val
.035

83
Sta El ev
10.71 7939.38
29 7934.19
49.83 7927.92
66.97 7917.74
126.36 7908.17
145.62 7914.19
163.53 7923.06
174.45 7924.49
190.52 7924.26
207.2 7926.04
225.86 7928.18
249.19 7932.16
273.81 7932.36
303.81 7931.6
332.14 7932.76
355.92 7941. 27
435,61 7940.77

3
Sta n val
131.71 .06

Sta el ev
20.93 7936.19
36.6 7931.87
54.37 7926.05
74.56 7914.46
131.71 7908.21
155.64 7922.86
168.16 7923.7
181.28 7923.43
196.067925.58
218.11 7926.84
233.34 7930.57
261.78 7932.37
283.81 7932.29
313.81 7931.93
345.06 7933.14
362.14 7941.54

CrystalRiver.rep

Warning: ~~rs e~:~g~n~i~:t:a~h~r~:~~r f~~a:d~i~i~~afO~~o:~' s~~~~~. the- current and previous cross section.

warning: ~~ts e~:;gfn~r~:t:a~h~r~:~~r f~~a~d~i~i~~afOc~o=~' s~~~~~~. the current and previous cross section.

CROSS SECTION OUTPUT Profi le 'lO-year

7913.15 Element
1.28 Wt. n-val.
7911.87 Reach Len. (ft)
7911. 57 Flow Area (sq ft)
0.009013 Area (sq ft)
1657.00 Flow ~cfs)
62.78 Tap Wldth (ft)
8.27 AV9' vel. Cft/s)

174~3~~ ~~n~: ~~~~~ (ft)

589.50 wetted Per. (ftl
7908.15 shear (lb/sq ft
1. 20 Stream Power (11ft 5)
5.86 Cum volume (acre-ft:)
0.01 Cum SA (acres)

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CROSS SECTION OUTPUT

~~f' H~~~v (m)
W.S. Elev (ft)
crit w.S. (ft)
E.G. Slope (ft/ft)
Q Total (cfs)
TOp wi dth (ft)
vel Total (ftls)
Max ch 1 Dpth (ft~
~:~~ih T:~~~ ~ig
M; n Ch El Cft)
Alpha
Frctn Loss (ft)
C & E Loss (ft)

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M' H~~~v (~g>

W.S. Elev (ft)
Cdt W.S. (ft)
E.G. slope Cft/ft)
Q Total (cfs)
TOp wi dth (ft)
vel Totel (ft/.)
Max ch 1 opth (ft)
Conv. Total (cfs)
Len9th wtd. (ft)
M; n ch El (ft)
Alpha
Frctn Loss (ft)
C &. E LosS (ft)

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Sta el ey
13.82 7938.56
32.54 7932.98
51.93 7927.35
70.8 7916.01
130.65 7908.15
152.62 7920.24
164.82 7923.19
178.01 7924.93
193.85 7925.03
211.23 7926.26
229.03 7929.09
256.78 7932.28
282.14 7932.36
3U.14 7931.88
342.14 7933.11
360.92 7941.48

Proft 1 e IFloodway

7914.05 Element
1.63 Wt. n-val.
7912.42 Reach Len. (ft)
79U.20 Flow Area (sq ft)
0.009623 Area (sq ft)
2181.00 ~low (cfs)
64.64 Tap width Cft)
9.28 Avg. vel. (ft/s)
4.27 Hydr. Depth Cft)
22233.4 Cony. Ccts)
589.20 wetted Per. (ftl
7908.15 shear (lb/sq ft
1. 22 Stream Power (11ft s)
5.95 Cum volume (acre-ft)
0.01 Cum SA (acres)

Left 08
0.060
515.18
18.17
18.17
66.09
9.07
3.64
2.00
673.7
9.91
1.10
4.00
18.90
7.35

Left 08
0.060
515.18
13.57
13.57
43.36
7.84
3.19
1.73
456.7
8.57
0.89
2.85
30.U
19.92

channel
0.035
591.49
181.11
181.11
1945.33
43.72
10.74
4.14
19830.9
43.72
2.49
26.73
77.08
18.49

channel
0.035
591.49
157.35
157.35
1489. 33
43.72
9.47
3.60
15687.3
43.72
2.03
19.17
60.69
18.49

R;8~~~B

626.76
35.71
35.71
169.59
11.85
4.75
3.01
1728.8
13.06
1.64
7.80
14.13
6.08

R;8~&gB
626.76
29.44
29.44
U4.31
11.22
4.22
2.62
1309.4
U.23
1.35
5.72
28.94
19.90

Warning: The energy 1055 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.

CROSS SECTION OUTPUT Profi 1 e '50-year

~~f' H~~~v (m) 7913.80 E1 ement Left 08 channe 1 R;8~~~B
1.52 W1:. n-Va 1. 0.060 0.035
w.~. Elev ~ft~ 7912.28 Reach Len. (ft) 515.18 591.49 626.76
Crlt W.S. ft 7912 . 02 Flow Area (sq ft) 16.94 175.11 34.09
E.G. Slo~e (ft/ft) 0.009371 :~~: ~~Mt) 16.94 175.11 34.09
Q Total (cfs) 2031. 00 59.43 1814.95 156.62
TOf width ~ft) 64.17 TOp Wl dth ~ft) 8.76 43.72 11.69
ve Tote 1 ft/s) 8.98 AV9' vel. ft/s) 3.51 10.36 4.59
Max Chl opth Cft) 4.13 Hy r. oepth C ft) 1.93 4.01 2.92
Conv. Total ~Cfs) 20980.1 Conv. (cfs) 613.9 18748.3 1617.9
Length Wtd. ft) 589.29 wetted Per. (ft~ 9.57 43.72 U.85
M;n ch El (ft) 7908.15 shear Clb/sq ft 1.04 2.34 1.55
Alpha 1.21 Stream Power (11ft s) 3.63 24.29 7.13
Frctn Loss ~m 5.93 Cum volume (acre-ft) 36.84 67.91 37.40
C & E Loss 0.00 Cum SA (acres) 21.96 18.49 23.30

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warning: The energy 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 secdons.

CROSS SECTION OUTPUT Profile #500-year

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~~f' H~~~V (~g) .
w.s. Elev Cft)
Cr1t W.S. (ft)

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7914.58
1.87
7912.72
7912.57

Element
Wt. n-val.
Reach Len. (ft)
Flow Area (sq ft)

Left 08
0.060
515.18
20.97

c~~m 1 R; 8~~6g8
591.49 626.76
194.13 39.29
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