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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warning:

CrystalRiver.rep
This may indicate the need for additional eron sections.
During the standard step iterations, when the assumed water surface wu 5et egual to critical
'Olepth,tht<calcuh:tedwatersurfacetamebackbelowcritlclll depth. This;nd,catesthat there;s
~~~tipr: 1 ~~;~~~;li ~~~~~s a:~~:r fou~~e il~r~~~:rn l~~:~~~~~d i~e'~~n~~ll d~~~~h wi eh the lowest. va lid, water
surface was used.

Note:

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CROSS SECTION

RIVER:Crysul
REACH: Marble

RS:IZ820

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INPUT
Description:
stationflevat;onOllta num- 184
su. Ele'J Stll Ele>.> Sta tIe" sta !Olev sca Elev
07852.37 3.627850.66 8.437848.34 13.617846.53 23.617841.71
28.43 7840 33.61 71l3B.3 43.617834.77 48.437833.56 53.617831.62
63.617829.11 68.667828.37 73.627827.73 74.367827.62 79.317827.13
83.617826.36 98.437826.18103.617826.04108.437826.08123.617826.17
128.437826.28133.617826.31 138.437826.42 143.617826.56 148.417826.67
153.617826.77 158.437826.88 163.617826.98 168.437827.05 173.617827.31
178.437827.39183.617827.59193.997827.75 197.847827.82 199.467827.67
204.177827.16205.057827.06211.377826.45 216.17825.88218.897825.53
ZZ4.797814.81 226.41&24.73 133.917814.88 Z.UA:. 7t25.<l9 248..247&24.!i4
249.277824.57256.457824.81 :/63.977824.19 271.387823.74 274.177823.59
276.817822.63 282.447820.57 284.187820.14 300.33 7820.14 330.487820.27
332.72 7820.54 H7.72 7821.09 339.297821.27 342.77 7821.66 344.717821.56
348.7878:<2.2360.0378n.95 360.917824.08 365.17823.45 365.67823.37
368.27 7823.01 370.89782l.07 378.857823.09 379.737823.01 3/12.93782Z-64
389.257821.95391.187821.73 392.147821.85 3937821.95395.727822.24
402.87 7823.3 404.067823.37 406.72 7824.17412.35 7824.37 4.14.83 7824.5
421.887825.42426.077825.9429.157826.14 430.177826.29 431.017825.96
444.287825.55451.797825.3459.247825.38 480.517824.96 485.247824.86
490.517824.8495.247824.73 505.247824.61510.517824.5515.247824.44
520.517824.44530.517824.31 535.247824.31 540.517824.35550.517824.35
555.247824.38560.517824.38570.517824.44 575.247824.44 580.517824.58
590.517824.58595.247824.64600.517824.67610.51 7824.8615.247824.99
620.517825.43630.517825.81635.247825.94 640.517825.94 650.517826.19
665.247826.38690.517826.38705.247826.29 715.247826.29 720.517826.22
730.517826.22 745.247826.31 750.517826.31 755.247826.37 760.517826.34
770.517826.477/15.247826.47790.517826.37 795.247826.37 800.517826.44
810.517826.44815.247826.31 825.247826.06830.517826.06835.247826.02
840.517825.89850.517825.83855.247825.55 860.517825.38 870.51 7824.8
885.247824.11 890.)17824.67895.24782.4.67900.517824.64910.517824.64
915.247824.7910.517824.84930.517824.96 935.247825.09 940.51782S.16
950.517825.41 9)5.247825.44 960.51782.5.44 985.247825.6990.517825.7
1005.247825.611015.247825.421020.517825.381030.517825.191035.247825.17
1040.517824.941041.137824.871044.37824.671049.08 78271050.51 7827.7
1055.247830.011060.517832.551065.247834.461070.517836.561073.677837.86
1080.517838.391083.827838.661090.457838.57 1110.27838.21112.297837.71
1115.247837.031119.847835.91 1126.67840.061135.247845.521140.51.7848.8
1149.917854.681152.437856.291154.417856.641157.697856.93

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Ma.rming's n valu~s
Sta n va.l Sta
o .06284.18
llankSta:Left Right
284.18 nO,48
In~ffective Flow nu,... 1
Sta L Sta R El~v permanent
360.911157.697824.08 F

""~
nval
.035

,
'"
310.48

nval
."

Len\lthS;LeftChannel Right
450.77 472.93 503.1S

coeffcontr, "-><pa.l\,
.1 .3

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CROSS SECTION OUTPUT

profile nOO-yea.r

~e~'H~~~V(~g) 782t~g ~~~m~~~a1. Lg:66gll C~~~~~l Ri8~6681l
~;'~t ~:~: Hg mtn ~i~;h,,~:~.(;:t~t) 4~~:~~ m:M S~~:t~
E.G. Slope (ft/ft) 0.011270 Aru (sq ft) 22.20 172.50 106.32
Q Total (cfs) 2181.00 Flow ~cfs) 72 .10 1868.52 240.38
~~V ~~~~~ un.) 13:J1 r~~.W~~i~ m}s~ l~J~ tg:i~ 7t~~
~~~v~h~o~~ih(~~~~ 20S~/~ ~~~~: (~~g (ft 6h~~ 176~O:~ 22~4~~
~~~g~~ ~id(fW) 7:~6:U ~~~~~d (~~/;q (m 19J~ 4~J~ 2t~:
Alpha 1.J8 Suea.'" power (lb/ft s) 3.14 :/8.39 s.n
I ~T~ t~~~ ~m ~:~= ~~: ~~l{~~r~:)re-ft) ~~:~~ itig ~~:M

_Wllrn~=.....Ib~e.qw...equatio.n...coulcLno.t....hLha.lanc.ed_IdU.in-thi-.pac.if.iad_~r~f-H-ej'il;4om;. :T~ e
pr09ram used cn tical d~pth for the water surface and continued on with th~ calculations.
warning: oiv"led flow computed for this cross-section.
Warning: The velocity hud has cha.nged by more than 0.5 ft (0.15 m). This may indica.te the need for
additiona.lcrosssect;ons.
'Hil.r"ill<}: :;:~~ s "':~91 n~1~~t~a~hr~~:dr f~~i1.~dJ;~i~~a fOc~o~~' s~~~i~~~. t\'le cllrre"t a...d previ OI.lS ems sectio".
wa.rni ng: ~~~~g~ ~~: ~~~~~i~~edt:~t~~e~~~}~~~, c=~:n b~~k b~1~:e~r7~f~~ 1 s~~~~~~ w~hi ~ef nd1~:~e~0 t~~~ t~~:~~ is
~~i ti p'1: 1 ~~i ~i~;ji ~~~~~. a~~~:r fou~~"a~r~~i:ml~~:~i~~~d ~~e'~~f~~~~ 1 d~~~~h wi th the lowest, va.li d, water
surfacewa5u.ed.

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Note:

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CROSS SECTION OUTPuT profile #Floodway

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~e~'H~~~V(~g>
W.S. Elev (ft)
crit W.S. (ft)
E.G. slope Cft/ft)
QTota1 (cfs)
~~V ~~~~~ m~S)
Max ehl Opth (ft~
~~~~th T~~~: ~~g
MinChEl (ft)
Alpha
~rit~ ~~~~ ~m

7B16.H
2.03
7824.JO
7II:<4.,(l
0.013663
211\1.00
46.30
11.44
4.16
18658.7
472.93
7820.14
1.00
6.45
0.20

Element
Wt.n-val.
Reach Len. (ft)
F'owAreaCSllft)
~~~~ i~~s~t)
Top width (ft)
~;~~. V~~Pt~f~m
Conv. (ds)
wetted per. (ft)
Shear (1b/sqft)
StreaJ1l Power (lb/ft 5)
cum volume (acre-ft)
Cum SA (i1.cres)

Left 09 Cha.nnel Right 011
0.035
450.77 472.93 503.15
190.;;1'.
190.68
'2181.00
46.30
11.44
4.12
18658.7
54.49
2.98
34.14
lL24 62.14 9.80
5.17 15.10 3.71

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war-ning:

The ~n~r51Y equation could not be balanced W1thln the speCl fled nUmb~r of 1 teratlons The
program used critical d~pth for the water surface and Cont1 nued on wlth th~ calculatlons
Thf! veloc:icy head has, ~ha...ged by more thdn 0.5 ft (0.15 ot). This may indicate the need for
additionalcrosssect1ons.
f~: ~~~~~y5~~;~0~a~a~r~~t~~ ~h~~n~~~. f~rM~~ l~). dg~~~~e~h~h~r~~~;:~t d:~~h p;:!~~~:t~~g~; sect; on.
ThismaylndlCate the need for add,tlonal cross seCt10ns.
ouring the standard st~p iterations. when the assumed water surface was set equal to critica.l
depth, the calculated water surface cam~ back below critical depth. This indlcate5 that there is
not a valid subcritical answer. The program d~faulted to critical depth.
CROSSSECTIONOUTPui profile#10-year

warning:

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Warning:
Warning:

'Harning:

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Pa.g~ 38

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