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

I

I

W.s. Elev (ft)
crit w.s. (ft)
E.G. slo~e (ft/ft)
Q Total (cfs)
TOp width (ft)
vel Total (ft/s)
Max chI opth (ft)
Conv. Total (cfs)
Length wtd. (ft)
Min ch El (ft)
Alpha
Fret" Loss (ft)
c &. E Loss (ft)

7933.68
7932.10
0.002873
1691.00
90.95
4.52
5.04
31548.6
843.38'
7928.65
1. 30
1. 56
0.06

Reach Len. (ft)
Flow Area (sq ft)
Area (sq ft)
Flow (cfs)
Tap width (ft)
AVS' vel. (ft/S~

~n~: ~~~~~ (ft

wetted Per. (ft~
shear (lb/sq ft
Stream Power (11ft s)
Cum volL11H! (acre-ft)
Cum SA (acres)

739.92
65.26
65.26
206.51
20.92
3.16
3.U
3852.7
23.31
0.50
1.59
23.70
8.50

8~nialRiv:&i~~~

107.21 201.49
107.21 201.49
7U.78 771.72
21.47 48.56
6.65 3.83
4.99 4.15
13298.1 14397.8
21.47 54.04
0.90 0.67
5.95 2.56
96.16 20.98
21.81 7.74

I

I

Note:

The conveyance ratio (upstream conveyance divided by downstream conveyance) is less than
0.7 or greater than 1.4. This may indicate the neei:l for additional cross sections.
The energf 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.
Multiple critical depths were found at this location. The critical depth with the lowest. valid. wa:ter
surface was used.

warn;"g:
Warn; og:

I

CROSS SECTION OUTPUT Prof; 1 e #10-year
M' H~~~v (m) 7932.64 Element LeftOB channel Ri8~~5gB
0.18 Wt. "-Va 1. 0.050 0.035
w.s. elev ~ft~ 7932.46 Reach Len4 (ft) 739.92 866.01 800.58
crit W.S. ft 7931. 39 Flow Area (sq ft) 135.77 80.83 241.88
E.G. slo~e (ft/ft) 0.0023U Area ?1 ft) 913.03 80.83 301. 69
Q Total (cfs) 1284.00 Flow C 5) 252.89 399.25 -631.86
~~V ~~~~ ~~~~s) 630.44 Top WIdth ~ft) 449.45 21.47 159.52
2.80 AVS' vel. ft/s~ 1.86 4.94 2.61
Max ch I Opth (ft~ 4.25 ~~n~: ~~,~~ (ft 1.50 3.76 2.51
Conv. Total ~cfs 26706.5 5260.0 8304. 3 13142.3
Length wtd. ft) 835.32 wetted Per. (ft~ 91. 22 21.47 97.84
Min ch El Cft) 7928.65 shear (lb/sq ft 0.21 0.54 0.36
Alpha 1.48 Stream Power (1 /ft 5) 0.40 2.68 0.93
Fret" Loss (ft~ 2.34 Cum volume (acre-ft) 54.60 74.30 40.41
C&ELOSS Cft 0.01 Cum SA (acres) 29.97 21.81 24.62

I

I

Warn; og:
Warn; og:
Note:

Divided flow computed for this cross-section.
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.
Multiple critical depths were found at this location. The critical depth with the lowest, valid. water
surface was used.

I

CROSS SECT:I.ON OUTPUT Profil e ISO-year
~~f' H~~~V cm) 7932.94 element Left DB Channel Ri8~~5gB
0.21 wt. n-val. 0.050 0.035
w.~. elev ~ft~ 7932.73 Reach Len. (ft) 739.92 866.01 800.58
Cnt w.s. ft 7931. 75 . Flow Area (sq ft) 162.87 86.70 268.34
E.G. slo~e Cft/ft) 0.002528 ~~~ ~~Mt) 1038.48 86.70 346.20
Q Total (cfs) 1575.00 323.74 469.33 781. 93
TOV wi dth ~ft) 658.01 Top WIdth (ft) 465.49 21.47 171.05
Ve Total ft/s) 3.04, AVS' Vel. (ft/s~ 1.99 5.41 2.91
Max ChI opth (ft~ 4.53 Hy r. oe~th (ft 1.54 4.04 2.76
Conv. Total ~cfs 31322.6 cony. (cfs) 6438.4 9333.7 15550.5
Length wtd. ft) 830.53 wetted Per. (ft~ 106.16 21.47 98.54
Mi n ch El Cft) 7928.65 shear (lb/sq ft 0.24 0.64 0.43
Alpha 1.49' Streill'l Power (1 1ft s) 0.48 3.45 1.25
Frctn Loss ~m 1.83 Cum volume (acre-ft) 68.37 84.18 52.82
C&rELOSS 0.00 Cum SA (acres) 32.30 21.81 29.32

I

I

warni ng:
warni ng:
Note:

Divided flow computed for this cross-section.
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.
Multiple critical depths were found at this location. The critical depth with the lowest. valid. water
surface was used.

I

CROSS SECTION OUTPUT Profi 1 e #SOa-year
~~f' H~~~v (m) 7933.36 Element Left 08 channel Ri8~~5gB
0.22 wt. "-val. 0.050 0.035
w.s. Elev (ft) 7933.14 Reach Len. (ft) 739.92 866.01 800.58
crit w.s. (ft) 7931. 98 Flow Area (sq ft) 206. 22 95.53 308.46
E.G. Slope (ft/ft) 0.002378 Area ~s1 ft) U30.06 95.53 422.59
Q Total (cfs) 1950.00 Flow c s) 465.26 534.9B 949. 76
TOV wi dth ~ft) 695.55 Tap width (ft) 466.49 21.47 207.59
Ve Total ft/s) 3.20 ~;~;.. V~~Pt~ fH~~ 2.26 5.60 3.08
Max chI opth (ft~ 4.94 1.96 4.45 3.15
Conv. Total fefs 39988.2 Conv. (cfs) 9541.1 10970.7 19476. 5
Length Wtd. ft) 820.68 wetted Per. (ft~ 106.16 21.47 99.60
Mi n ch El (ft) 7928.65 shear (lb/sq ft 0.29 0.66 0.46
Alpha 1.41, Stream Power (lIft s) 0.65 3.70 1.42
Fretn LosS ml 1.14 Cum volume (acre-ft) 87.55 96.29 71.14
C&ELoss 0.03 Cum SA (acres) 37.24 21. 81 34.76

I

I

warni ng:
warni ng:
warni ng:

Divided flow computed for this cross-section.
The conveyance ratio (upstream conveyance divided by downstream conveyance) is less than
0.7 or greater than 1.4. This may indicate the neei:l for additional cross sections.
i~rs e~:~grn~~~:1;:a~h~r~:~~r f~~a~d~i~i:~afOc~o;~. s~~~~~~. the current and previous cross section.
Multiple critical depths were found at this location. The critical depth with the lowest. valid.
surface was used.

water

I

Note:

CROSS SECTION

RIVER: crystal
REACH: Marble

RS: 19905

I

I

INPUT
oescri ption:
Station Elevation Data num-
Sta Elev Sta Elev
07962.75 3.667961.82
14.62 7957.91 23.667954.48
34.63 7951.69 35.35 7951.45
55.617947.57 64.587947.17
83.66 7943.6 84.63 7943.41
104.62 7937.41 104.95 7937.17
124.62 7933.1 133.667932.74
144.497931.53 151.9 7929.6
184.62 7928.89 193.66 7929.13
222.9 7929.59 225.01 7929.61
260.787929.45 267.38 7929.6
280.63 7925.95 292.537926.09
321. 38 7926.93 323.51 7927 .05
341.2 7927.59 344.37 7927.67
365.8 7927.51 369.187927.46
388.287930.56 390.417930.55
406.867930.67 410.71 7930.72
430.71 7931.49 434.027931.58
464.02 7933.18 470.71 7933.54
504.02 7935.36 520.71 7935.91

,188
Sta Elev
'4.62 7961.51
24.62 7954.16
42.58 7948.51
67.04 7947.08
87.09 7943.3
109.56 7933.88
134.62 7932.69
154.07 7929.48
203.66 7929.36
238.05 7929.62
268.99 7929.67
310.6 7926.27
328.96 7927.22
350.82 7927.56
378.23 7929.81
397.13 7930.44
414.02 7930.88
440.71 7931.93
480.71 7934.06
524.02 7936.06

Sta elev
6.79 7960.87
32.35 7952.68
53.66 7947.69
70.48 7946.3
95.04 7942.69
113.8 7933.66
139.6 7932.5
163.66 7928.93
213.66 7929.51
253.2 7929.49
273.96 7930.1
313.13 7926.46
334.46 7927.54
355 7927.37
379.52 7930.18
400.U 7930.5
420.71 7930.97
444.02 7932.17
4B4.02 7934.17
540.71 7936.28

Sta E1ev
13.62 7958.27
33.64 7952.15
54.63 7947.62
74.63 7945.33
97.477942.51
114.62 7933.61
141. 03 7932.42
173.66 792B. 89
220.54 7929.58
257.84 7929.46
278.617927.08
316.59 7926.65
336.53 7927.61
359.3 7927.56
380.517930.48
404.71 7930.62
424.02 7931.15
460.71 7932.94
500.71 7935.27
544.02 7936.44

page 15

I

I

I