FLOOD00150

• Designation Number: 579
• County: Gunnison
• Community: Marble and Vicinity
• Stream Name: Crystal River
• Title: Floodplain Information Report - Crystal River Technical Appendix
• Date: 8/1/2004
• Prepared For: CWCB
• Prepared By: Icon Engineering, Inc.
• Floodplain - Doc Type: Floodplain Report/Masterplan

Warning: The velocity held has changed by more tha-n 0.5 ft (0.15 m). This may indicate the need for
additional cross sections.
warning: The conveyance ratio (upstream conveyance divided by d ownstreamconveyance)is1essthan
0.1 or ",reater than 1.4. ,his may ind'icate the l\eed for additional cross sect:lons.
Warning: The energy loss was greater than l.Oft (O.3m). bet:weenthe current IInd previous cross section.
This maYlndicate the need for additional <:ross sections.
CROSS SECTION OUTPUT Profile "50-year
7944.34 Element
0.49 Wt. o-vill,
7<:1H.85 Rnehlen. eft)
Flow Area (Sq ft)
Area (sq ft)
Flow (cfs)
TopwidthCft)
AVlI.Vel. (ftls)
Hydr,tlepth(ft)
conv. Cds)
wetted per. (ft!
shear {lb/sqft
stream Power (l/fts)
Cum volume (acre-ft)
Cum SA (acres)

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LengthWtd. (ft)
MinChEl (ft)
Alpha
FrC'tTllOU {ft)
C&ElOSS(ft)

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t~~. H~~~v (?g>
w.s. Ele" (f't)
cri'tw.s. (ft)
E.G. Slope (ft/ft)
QTotal (ds)
Top Width (ft)
vel Total (ft/s)
MaxChlopth(ft)
Conv.Tot",l (cfs)
Length wtd. (Ft)
MinChEl (ft)
Alpha
FrctnLos.s(ft)
C'" E Loss (ft)

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warning:
warning:
Warning:

The 'ieloci'ty head lo,as cnanged by II\l)re tnafl 0.5 ft (0.15 m). This may indicate the fleed for
additional cross sections.
The conveyance ratio (upstream conveyance divided by downstream conveyance) is less than
0.7 or greater than 1.4. This may indicate the need for additionlll cross sections.
The energl; loss was greater than 1.0 ft (0.3 m). between the currertt and previous cross section.
This maYlndicate the need forlldditional cross sections.

CROSSSECTIDNOUTPUT Profile "SOO-year
e~~. H~~~v (}g) 7945.07 Element Left 08 Channel Ri8~56g8
0.62 W'- n-val. 0.060 0.035
01.50. Elev ~ft~ 7944.45 Reach Len. (ft) 467.46 479.73 474.53
Critw.S. ft Flow Area (sq ft) 19.18 293.61 21.16
E.G. slope (ft/ft) 0.001761 ~j: ~~~srt) 19.18 293.61 21.16
QTatal (cfs) 1950.00 30.98 1881.75 37.27
TO~ width Vt) 57.27 Tap Width ~ft) 7.H 41.00 7.M
ve Total ft/s) 5.84 AVS. Ve 1. ft./S~ 1.61 6.41 1.76
Max chl opth (ft~ 7.20 tlyr.oepth(ft 2.64 6.83 3.02
canv. Tatal ~cfs 46472.4 Canv. (cfs) 738.4 44845.8 888.3
Length wtd. ft) 478.76 wetted Per. (ft~ 9.90 43.03 9.59
MinChEl(ft) 7937.25 Shear (lb/sQ ft 0.21 0.75 0.24
Alpha 1.17 stream Power (11ft s) 0.34 4.81 0.43
FrCtnLoss m; 1.65 CumValume(acre-ft) 118.85 107.61 201.08
C & e. LoS.'; 0.11 C\lm S" (Il.crl!s) 52.44 25.89 70.75

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479.H
7937.25
1.13
1.32
0.18

wetted Per. (ft)
~~~:~ (~~~ n~/ft s)
Cum volume (acre-ft)
Cum SA (acres)

7.42
0.14
0.19
80.87
43.62

crYStalRiver.rep
43.03 7.69
0.49 0.16
2.44 0.23
84.11 153.53
25.89 59.52

0.001578
1575.00
54.88
5.25
6.60
39643.2
478.90
7937.25
1.14
1.46
0.17

LeftOB
0.060
467.46
15.16
15.16
22.01
5.96
1.45
2.54
554.0
8.46
0.18
0.26
96.99
47.61

Channel
0.035
479.73
267.47
267.47
1525.25
43.00
5.70
6.22
38390.'1
43.03
0.61
3.49
'15.22
25.89

Ri8~56g8
474.53
17.30
17.30
27.74
5.92
1.60
2.92
698.3
8.32
0.20
O.B
174.46
64.64

Warning;
Warning;
Warning:

Tht velocity head has changed bYll10re thilnO.5 ft (0.15 m). Thislllay indicate the need for
additianalcrasssections.
The ConveYilnce ratia (upstrearn conveyanct divided by dawnstream co nveyance) is less than
0.7or9reaterthan1.4. This may indicate the need forlldditianal crass sections.
The energl! lass was greater than 1.0 ft (0.3m). between the current and prev;ouscro,;s se,tian.
This may ~ndicate the need for additional cross sections.

INPUT
Description:
StationElevnionOata nUll!- 261
Sta Elev Stil Elev Stil Elev Sta Elev Stil Elev
07990.68 12.117992.24 13.097992.37 14.22 7992.51 26.167989.98
27.827989.48 38.837986.54 H.53 7984.9 51.87982.07 59.247979.59
64.497977.77 65.067977.57 70.57975.76 90.667969.27 90.887969.'
103.677964.97106.377964.1 116.637"60.85 120.57'l5'l.63 110.'17959.5
123.4,7'l56.83 129.087950.55 132.847945.69137.79 7945.1'l 142.567945.08
147.677945.14 153.57945.33 155.53 7945.4 161.477945.35168.397945.27
176.297945.3181.457945.29184.487945.27 194.437945.25 199.147945.23
204.367945.22 207.397945.22 216.34 7945.2 218.617945.21 222.57945.22
~~~:~~~:~~ ~~HHj:~:~~ ~~~8t-~:~~~-~~?r~ *tHt-~~~.:: ;;:~.;~
298.167945.26 310.67945.46 326.317945.45 337.057945.65 339.477945.68
341.021'l45.76 350.027945.87 357.137945.'l4 362.9" 794S."7 373.447946.01
375.957946.03387.837945.56389.027945.51 401.897945.83 409.197945.95
413.487946.16414.857946.35420.577946.88 429.77947.19432.387947.29
435.447947.38441.387947.58450.997947.46 466.897947.15 473.177947.01
479.657946.91483.497946.9491.547946.86 500.57946.84506.527946.87
513.847946.87518.057946.94523.387946.94 524.197946.99 528.567947.37
531.147947.2 S33.27947.07 5377946.81 544.25 7946545.447945.93
553.747944.95 Si4.567944.59 556.77943.72 560.427942.18 564.847941.33
567.947940.>3 569.S17940.72 574.027941.38 583.897942.46 592.177942.42
595.627942.42 607.57 7942.4 611.927942.35 620.247942.21 628.21 7942
632.97941.98649.267941.88658.237941.89 660.817941.85 670.97941.71
677.17941.49683.577941.15 693.47940.96696.237940.92706.11 7940.8
708.97940.76721.567940.83725.997940.96 734.227940.95 744.917940.46
747.367939.97751.36 7939754.457938.23 754.777938.13 798.327938.13
798.667938.22 805.27940.02807.477940.68810.227941.46818.557943.85
821.72 7943.78823.77 7943.74815.557"41.75 B8,67943.76 841.14 7943.4
848.21 79Al.86 856.367940.36 860.887940.25 872.65 7941 878.627941.34
881.877940.73 887.717940.35 892.737939.92 899.127939.96 901.227939.96
906.967939.98 911.697940.14 914.717940.17 918.557940.33 922.987940.58
930.227940.95 932.87941.01 934.77941.08938.957941.23 944.967940.94
954.867940.94957.447941.11 963.017941.01 966.227940.94 969.047940.91
974.027940.76981.067940.69968.567940.52 993.017940.45 996.077940.38
1003.977940.251011.627940.221016.017940.271018.13 7940.31022.237940.15
1024.Hi 7,,40.37 1016.95 7940.391035.1J9 7"40.171039.17 7940.031040.217939.97
1050.747939.941053.797939.911061.927939.861068.797939.741073.077939.71
1076.287939.63 1079.37939.581084.267939.351085.48 7939.31090.697938.92
1096.157938.981101.557938.961107.397939.141110.497939.071112.547938.98
1116.357938.83 1120.78 7"38.741132.237938.34 1136.757938.061145.877938.33
1151.147938.341156.35 7938.4511U.147938.451166.l5 7938.571171.147938.52
1176.357938.731186.357938.621196.357938.641201.147938.661206.357938.66
1211.147938.721216.357938.751221.147938.821226.357938.881241.147938.77
1246.357938.751266.35 7938.61271.147938.631276.357938.591286.357938.67
1296.357938.441306.35 7938.181311.147938.221316.357938.171326.35 7938.25
1331.14 7938.131341.14 7937.91346.lS 7937.771356.35 7937.791361.14 7937.81
1371.1479J7.771376.l57937.811386.357937.771401.147937.591406.357937.61
1411.147937.371416.357937.281426.357936.771434.447936.331436.667936.32
2539.837936.322540.157936.392546.357937.742552.087939.422553.567939.87
2568.967939.92 2574.47939.922581.14 7941.82586.357943.312589.957944.27
1590.23 79:0\4.33 2>9:05..35 7945.>1 2W1.14 7'34;,.5S If>G€..3S 7'3~7.611f:,21.14 7951.22
2626.357952.472631.147953.392636.];7954.692636.637954.812639.067955.62
2642.087956.312646.357957.462661.147961.962666.357963.272676.35 7966.7
2676.647966.83

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CROSS SECTION

RIVER: Crystal
REACH: Marble

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RS:22724

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