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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07916.59
21.17908.78
40.017901.89
63.957893.17
89.687883.71
114.85 7881
133.647877.45
175.267876.68
190.877882.46
214.677894.58
231.297901.29
248.087906.4
266.257914.91

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Maroning's n values
Sta nval Sta
o .06139.92
Banksta: Left Right
139.92168.26

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CROSS SECTION OUTPUT
~~r' H;~dv (~W
W.~. Elev (Ft)
crlt W.S. (ft)
E.G. Slope (ft/ft)
QTotal (ds)
TOp Width (ft)
vel Total (ft/s)
MaxClllDptll(ft)
~~~~thT~~~~ ~m)
MinChEl(ft)
Alpha
FrctnLoss(ft)
C & E lOSS (ft)

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warning;
Warning:
warning:
warning:

The energy eo,uationcould not be balanced within the specified num berofiterations. The
program used critical deptll For the water surface and continued on with the calculations.
The velocity head has changed by more than 0.5 ft (0.15m). This may indicate the need for
additional cross sections.
The energy loss was greater than 1.0 ft (0.3 m). between tile current and previous cross section.
Tllis may lndicate the need for additional cross sections.
During the standard step iterations. when the assumed water surface was set e9ual to critical
depth, the calculated water surface came back below critical depth. This indlcates that there is
notavalidsubcritiealanswer. The pr09ram defaulted to critical depth.

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CRDSS SECTION OUTPUT
~~~. H~~dV~~~P
~i-~t ~~~~ m~
E.G. Slope (ft/ft)
QTotal (efs)
~~~ *~~~~ UUS)
loIaxChlOptll(ft)
conv.Total (cfs)
length wtd. (ft)
MinchEl (ft)
Alpha
~rit~ t~~~ ~m

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4.937914.78
27.687906.48
45.357899.89
69.67891.05
91.837883.34
118.987881.08
134.417877.27
182.157877.52
196.067884.62
216.517894.72
237.687904.01
249.77907.7
266.877914.8

8.87913.32
29.187905.94
50.427898.15
71.227890.48
100.217882.21
119.717880.91
139.927875.85
183.187877_73
198.957886.22
217.777894.82
242.467904.58
257.877914.24

13.017911.74
29.617905.77
60.827894.32
77.697888.1
101.947882.03
123.247880.01
168.267875.81
185.447879.2
206.477890.28
224.777897.86
246.467905.05
260.147915.94

CrystalRiver.rep
19.217909.49
37.267902.87
61.527894.07
81.637886.67
112.847881.18
126.197879.31
174.137876.53
185.667879.31
207.517890.94
227.277899.17
247.497905.89
261.447915.78

leFt DB
0.060
520.60
42.89
42.89
190.66
18.61
4.45
2.31
1816.3
19.18
1.54
6.84
17.39
6.69

Channel
0.035
502.01
132.37
132.37
1648.47
28.34
12.45
4.67
15703.4
28.34
3.21
40.02
69.75
16.83

Profile#100-year
7882.42 Element
1.92 lit.n-val.
7880.50 Reachlen. (ft)
7880.50 Flow Area (sqFt)
0.011020 ...rea(sqft)
2181.00 Flow (cfs)
66.32 Top Width (ft)
9.18 ...vg.ve1. (ftJs)
4.69 ~ydr. Oepth (ft)
20776.3 cony. (efs)
506.33 wetted per. (ft)
787t g ~~~:~m (~~,:~ H~/Ft s)
6.79 (um volume (acre-ft)
0.22 (um SA (acres)

CoeffContr. Expan.
.1 .1
left 09 Channel Ri8~:;6gB
0.060 0.035
520.60 502.01 497.00
42.89 132.37 62.27
42.89 132.37 62.27
190.66 1648.47 341.87
18.61 28.34 19.37
4.45 12.45 5.49
2.31 4.67 3.21
1816.3 15703.4 3256.6
19.18 28.34 20.29
1.54 3.21 2.11
6.84 40.02 11.S9
38.19 63.32 38.76
22.11 16.83 23.42

I-~~~'H;~~V(~W 788~::~ ~~~m~~~al.
1'1.5. Elev(ft 7879.80 Reach Len. (ft)
critw.s. ft 7871!O Flo,,:~ea~q.1.tJ
- ~:~O:~lo~~fs)c t)~h.~~~ (~~~)t
Top width (ft) 62.34 TOP Widtll (ft)
Vel Total (ft/s) 8.61 AV~. vel. (ft/s~
~~~v~h~o~~fh(&m IS4~j~~ ~~n~: ~~~~~ eft
lengthwtd. (ft) 506.21 wetted per. eftl
loIinChEl eft) 7875.81 Shear (lb/sqft
Alpha 1.43 streamPower(l/fts)
Frctn losS (ft) 6.94 c~m volume (acre-ft)
C & E lOSS Cft) 0.20 cum SA (acres)

num.. 3
n val Sta n Val
.035168.26 .06
lengths 5~~~~ c~o~~61 Ri~~}

Profile#Floodway
71'1'2.42 ~lement
1.92 \<It. n-val.
7880.50 Reachlen. (ft)
7880.50 Flow Area (sq ft)
0.011020 Area (sq ft)
2181.00 Flow ~cfs)
66.32 TOPW1dth(ft)
9.18 AV9. vel. (ft/s)
4.69 Hyar.Depth(ft)
20776.3 conv. (cfs)
507.90 wetted Per. (ftl
7875.81 shear (lb/sqft
1.47 stream Power (l /ft s)
7.20 cum volume (acre-ft)
0.17 cum SA (aeres)

7882.16
1.83
7880.32
7880.32
0.011036
2031.00
65.31
'.00
4.51
19333.4
506.30
7875.81
1.46
6.78
0.21

Element
Wt. n-val.
RuehLen. (ft)
Flow Area (sq ft)
~l~: ~~~sjt)
TopwidthCft)
~~~i-.V~:Pt~f~~g
conv. (cfs)
wetted per. (ft)
~~~:~ (~~,~~ H~/ft s)
cum volume (acre-ft)
cum SA (acres)

Rig~663B
487.00
62.27
62.27
341.87
19.37
5.49
3.21
3256.6
20.29
2.11
11.59
11.80
5.22

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The energy equation could not be balanced within tile specified number of iterations. The
program used critical depth for the water surface and continued on with the calculations.
The veloC1ty head has changed by more than 0.5 ft (0.15m). This may indicate the need for
additionalcrosssect;ons.
i~~ s e~:?r n~i~~t:a~h~r~:~dr f~~a~d~i~i ~~afO c~o~~. s~~~7~~~. the current and previ ous cross section.
~~~~~~ ~~: ~~i~~i~~e~t:~t~;e~~;}~~~. C:~:nb~~~ b~~~:e~r7~f~~1 s~~~~~~ w~hi ~ef nd~~:t~o t~~~t~~:~e is
not a valid subcritical answer. The program defaulted to critical depth.
CROSS SECTION OUTPUT ProfilelHO-year

The energy equation could not be balanced within the specified number of iteracions. The
program used critical depth for the water surface and continued on with the calculation s.
The velocity head has changed by mOre than 0.5 ft (O.1Sm). This may indicate the need for
additional cross sections.
:::~~ s e~:?rn~i~:t:a~ll~r~:~dr f~~a~d~i ~i ~~a ~O c~o~~' s~~~~~~. the current and previ ous cross secd on.
During the standard step iterations, when the aHumedwater surface was set egual to critical
depth, the calculated water sufface came back beloweritical depth. Thisindlcatestllatthereis
not a valid subcritical answer. The program defaulted to critical depth.
CROSS SECTION OUTPUT Profilelf50-year

warning:

warning:

warning:

warning:

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warning:

warning:

warning;

warning:

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~~r' H;~dv (}~F
w.S. Elev(ft)
critw.S. (ft)
E.G. slope (ft/ft)
QTotal (ds)
~~~ ~~~~~ HUs)
loIa~ chl Opth (ft)
Conv.Total (ds)
lengthwtd. (ft)
loIinChEl (ft)
Alpha
FrctnloSs(ftl
c & E lOSS (ft

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l~~g6gB cS~~3Sl Rig~~6gB
520. 60 50~. 01 487.00
~lL.B.D.--11LA9-49. nR
lO.80 112.49 49.08
125.30 1285.40 246.30
15.79 28.34 18.21
4.07 11.43 S.02
1.9S 3.97 2.70
1167.1 11972.1 2294.0
16.28 28.34 18.93
1.36 2.86 1.87
5.54 32.64 9.36
29.01 54.42 27.17
19.34 16.83 19.10

leftoH
0.060
520.60
39.60
39.60
171.42
17.90
".33
2.21
1531.7
18.45
1.48
6.40
HAS
21.32

Channel
0.03S
502.01
127.27
127.27
1544.98
28.34
12.H
4.49
14106.9
28.34
3.09
37.56
50.88
16.83

Ri8~g6gB
487.00
58.81
58.81
314.60
19.07
5.3S
L08
2994.8
19.94
2.03
10.87
35.24
22.45

warning: The en~rgy equation could not be balanced within the specified nl.ll1lber of iterations. The
program used critical depth for the water surface and continued on with the calculations.
page 31

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