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

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CrystalR;ver,rep

Boundary conditions

River

Reach
Marble
Marble
Marble
Marble
Marble

Profile
IOO-year
Floodway
la-year
SO-year
500-yur

upstream

Downstream

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crystal
crystal
crystal
Crystal
Crystal

l'lormals_O.013
Normals_a.OB
NormalS_a.On
Normals_O.OB
Normals_D.OB

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GEOMETRY DATA

~:~~:i~~ ~~i~ e: ~~~~~~~o~1~~;\~~~~~un~~\crysta Jlli ver. g04
CROSS SECTION

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RIVER:Cryztal
REACH: Marble

RS:24407

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INPUT
oescriptiol1:
StationE1evationData nu_
Sta Elev Sta Elev
o 7966 2.67965.01
18.737958.43 18.947958.35
51.067953.44 57.247954.89
68.247956.92 70.857957.24
89.987959.11 91.37959.87
100.957962.04 102.17963.14
122.937983.05123.557983.58
132.7:27991.27

36
Sta Elev
8.347962.45
29.977954.11
60.437955.58
75.177957.81
91.687959.92
107.427968.22
125.677985.67

Sta El~v
10.667961.58
31.687953.47
60.687955.64
81.267958.63
92.057959.96
112.527973.08
131.617992.22

Sta Ehv
18.617958.47
45.997953.44
64.517956.47
83.23 7958.9
99.857960.99
115.497915.92
132.377992.84

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Manning's n values
Sta nval Sta
o .06 31.68

""~
nval
.035

,
'"
51.06

nval
,06

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BankSta: Left Right Lengths: Left Channel ~t~~~ Coeff contr. Expan.
31.68 n.06 771.14 831.57 " "
CROSS SECTION OUTPUT profile#100-year
~er' H~~~v (~~p 7960.'i2 El~m~nt L~ft OB chann~l Rig~~6gB
1.81 "" n-val. 0.060 0.035
w.~. Elev ~ft~ 79'i8.71 Reac:hLen. (ft) 773.34 831.57 855.60
crn 101.5. ft 7958.71 Flow Area (sq ft) 35.87 101.82 69.86
E.G. slope (ft/ft) 0.009191 Area ~s1 ft) 35.87 101.82 69.86
QTotal (cfs) 1691.00 Flow c s) 154.81 1252.49 281.70
TO~ Width ~ft) 63.80 TOp W,dth ~ft) 13.67 19.38 30.75
ve Total ft/s) 8.15 ...v~. vel. ft/.S~ 4.32 12.10 4.06
"'ax chl opth (ft~ 5.27 Hyr.Oepth(ft 2.62 5.25 2.27
conv. Total ~CfS 17638.5 conv. (cfs) 1614.8 13064.5 2959.2
Lengthwtd. ft) 833.07 wetted Per. (ft~ 1-4.64 19.38 31.23
"'inchEl(ft) 7953.44 shear (lb/sq ft 1.41 3.01 1.28
Alpha 1.76 stream Power (11ft s) 6.07 37.08 L21
Frctn LOSS 1m 7.43 Cum volume (acre-ft) 105.07 102.62 185.n
" , LOSS 0.29 CUm5A(acres) 49.85 26.60 67.93

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warning:

Th~ energy equation could not be balanced wi thin the specified numb~r of iterations. The
program used critical depth for the water surface and continued on with the calculations.
The velocity head has changed by more than 0.5 ft (0.15 m). This may indicat~ the need for
additional cross sections.
i~~ s e~:~grn~~~:t:a~hr~:~dr f~~a~d~i~i~~a~O~~o~~' s~~~~~~. the cumnt and previous cross section.
During the standard step iterations, when the assumed water surfac~ was set e9ual to critical
doalltl\, tl\oacakulated...ater surfacoac~ba.c\;belO111crit1cil.ldepth. Tl\isiru:hc..testl\atthereh
not ~ valid subcriticil.l answer. The program defaulted to critical depth.

warnin9:
W~rning:

W~rning:

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~er' H~~dv (~n)
W.S. El~v (ft)
crit W.5. (ft)
E.G. Slope Cft/ft)
-I-QTotal(CfS)
~~~ ~~~i~ ~n~S)
~x-~Opth-(f,;)
~~~~th T~~~: ~~W
MinChEl (ft)
Alpha
~r~t~ ~~~~ ~m

profile#Floodway
7960.52 Element
1.81 lOt. n-val.
7958.71 Reach Len. (ft)
7958.71 FlowA,rea(sqft)
0.009191 A.rea(sqft)
1691.00 Flow (cfs)
63.80 Topwidth(ft)
8.15 A,Vll.voal. (ft/s)
S-.-1+-~~faj>t-h--ff~
17638.5 Conv. (cfs)
8lS.<l0 wetted Per. (ftl
7953.44 shear(lb/s'lft
1.16 Stream Power (1 /ft s)
8.47 Cum volume ('"re-ft)
O.B Cum SA (il.cras)

LeftOB
0.060
773.34
15.87
35.87
154.81
13.67
4.32
2.62
1614.8
14.64
1.41
6.07
30.77
12.n

CS~~~~l Rig~~6gB
8U.51 855.60
101.82 69.86
101.82 69.86
1252.49 283.70
19.38 30.7'i
12.30 4.06
j.,-r5--t-:-H
13064.5 2959.2
19.38 31.23
1.01 1.28
37.08 5.21
112.19 25.39
26.60 9.56

CROSS SECTION OUTPUT

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warning:
Warning:
Warning:
w..rning:

Th~ energy equil.tion could not boa bahnced within the specified number of iterations. The
progril.mused critic..l depth for thoa...ater surface il.nd continued on with the c..lcuhtions.
The velocity hoaad has changed by more thil.n 0.5 ft (0.15 m). This may indicil.toa the n~~d for
additional Cross se<::tions.
~~~ 5 e~~?r n~~~:t:iI.~h~r~:~~r f~~a~d~;~i~~.. iO~~o~~. s~~~~~~~. the current il.nd previ ous cross secti on.
ouring thoa standard step iter..tions, when th~ assumed water surhce was set e~ual to critical
depth, the c..1culated...ater surface Cil.llle bac\; below cr1tic..l depth. This ,nd,catu that there is
not a valid subcritical answer. Thoa program defaulted te critic..l depth.

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CROSS5ECTIONOUTPUT ProfilellO-yoaar
~er' H~~dv (~g' 7959.57 Element UftOB Channel Rig~~6gB
1.64 "" n-val. 0.060 0.035
W.5. Elev (ft~ 7957.93 Reach Len. (ft) 773.]4 831.57 855.60
crit W.5. eft 7957.93 FlowAr....(sqft) 26.09 86.85 48.32
E.G.51ope(ft/ft) 0.009886 ;r~~ ~~~sjt) 26.09 86.85 48.32
QToul(cfs) 1284.00 105.04 996.54 182.42
~~~ ~~~~~ ~~~~s) 56.05 Tep width ~ft) 11.65 19.38 25.02
7.96 A,v~. vel. ft/s~ 4.03 11.47 3.78
M..xchl Dpth (ft) 4.4g Hyr.Depth(ft 2.24 4.48 1.93
conv. Teta 1 ~Cfs) 12913.8 Conv. (cfs) 1056.5 10022.7 1834.6
Lengthwtd. ft) 8H.02 wetted per. Cftl 12.48 19.38 25.45
MinchEl (ft) 7953.44 Shear (lb/sqft 1.29 2.77 1.17
Alpha 1.66 Stream Power (1 /ft s) 5.20 31.74 4.42
FrctnLOss 1m 11.06 cumVelume(acre-ft) 81.45 86.84 155.22
C&ELOSS 0.09 CUm5A(aCres) 4].93 26.60 60.57

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Warning:

Theenerg:(losswil.sgruter thil.n 1.0 ft (0.3m). between the current il.ndprevious cress sectien.
This mil.Y lndicil.te the need for additional cross sections.
~~~~~? ~~: ~~f~~f~~oa~t:~t~~e~~~~~~~, C~:\~~~ ~~~:~~/;~f~~l s~~~~~: w~~i~ef nd~~:~e~o t~~t t~~:~e is
not a valid subcritic..l il.nswer. The program dehulted to critical depth.
CROS5SECTIOtlOUTPUT Profile#50-yur

warning:

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Palle2

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