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

II

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1041.64 7818.44 1051. 79 7818.58 1056.95 7818.59 1061.94 7818.67 1065.58 781~~~~talRiYer rep
1082.257818.981086.227819.061100.117819,251102.567819.28:1-108.747819.29
1112.727819.291117.38 7819.31122.877819.351126.017819.291133.027819.17
1143187819131151917819171157.827818.961164.547818.691168.597818.07
1173297817011171.87781687n1l3.797817.031186.437817.04 1203.77817.21
1212.697816.841214.26 781712.23.697817.9912.2.5,.04 7UlL15 lBO.] 781.&.22
1238.23 7818.35 U44.72 7818.271249.217818.061253.14 7817.612S>.OS 7817.18
1258.487816.881263.047816.411265.037816.35 1267.63 7816.261275.517815.96
1277.48 7815.87l2'ro.02 1823.05 1295.497825.961298.66782.7.261305.657829.15
1306.967829.481310.387830.33 1333.547830.681335.597830.451336.11 7B311.4
1341.547B29.991342.427B29.921346.267827.541351.297823.16.H55.227B211.88
1364.3878211.81366.5778211.791369.3778211.76

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Manning'snValues
Sta nVal Sta
o .1l6 376.3

num_ 5
nval Sta
.05565.78

nval Sta
.IlH 648.12

nval
.06

nval Sta
.05685.78

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BankSta:Left Right Lengths: Left Channel Right
565.78648.12 523.49532.79600.34
Ineffective Flow num_ 2
StaL StaR Elev permanent
II 555.67815.51 F
657.431369.n 7815.2 F

Coeffcontr.
.1

E~pan.
.3

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CROSSSECT1ONOIJTPUT profile#100-year
e~~' fI~~~v (~W 7816.41 Element LeftOB Channel Rig~~56B
0.67 we n-val. Q.1l50 0.035
W.S. Elev ~ft~ 7815.73 Reach Len. (ft) 523.49 532.79 600.34
crit 101.5. ft 7815.73 Flow Area (sllft) 203.78 175.71 30.34
E.G. Slope (ft/ft) 1l.1l12455 Area ~s~ ft) 203.78 175.71 30.34
Q Total (cfs) 2181.00 Flow cs) 7.H.66 1379.65 87.69
TO~ Width ~ft) 311.38 TOp loll dth ~ft) 191.95 82.34 37.09
ve Total ft/s) 5.32 AV~. vel. ft/s) 3.511 7.85 2.89
Max chl llpth (ft~ 3.13 Hyr.Oepth(ft) 1.06 2.13 0.82
conv. Tota 1 ~cfs 19542.4 cony. (cfs) 6394.6 12362.1 785.8
Lenllth Wtd. ft) 540.46 Wetted per. (ft~ 192.81 82.37 37.30
NinchEl (ft) 7812.60 Shear (lb/Sllft 0.82 1.66 0.63
Alpha 1.53 streamPOWf!r (l/ft s) 2.88 1],02 1.83
~T~ ~~~~ ~m 5.44 Cum volume (acre-ft) 31.55 54.39 33.33
0.00 cum SA (acr..s) 18.80 14.40 19.07

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The energy equation could not be balanced within the specified number of iterations. The
program used critical depth for the water surface and continued on with the calculations.
Oivlded flow computed for this cross-section.
The energ):' l~ss was greater than 1:0.ft (0.3 m). between the current and previous cross section.
This..aYlndlcatethe needforaddltlonal cross sections.
~~~~~~ i~: ~~i~~l~~edt:~t~~e~~~}~~~, c~~~\~~~ ~~~:e~ri~~~~l sd~~~h~ w~~i ~e{ n~1~:~e~0 th~~ t~h:~e ; s
not a valid subcritical answer. The program defaulted to critical depth.
CROSS SECTION OUTPUT profile'Floodway

warning:

warning:
warninll:

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warning:

Element
Wt. n-val.
Reach Len. (ft)
Flow Area (sq ft)
~16: ?~1srt)
Top width (ft)
Avg.vel. (ft/s)
Kydr.Depth(ft)
cony. (ds)
wettedP..r. (ftl
Shear (lb/sq ft
Stream Power (l/fts)
cum volume (acre-ft)
Cum SA (acres)

Left OB Channel Right OB
0.035
523.49 532.79 600.34
232.00
232.00
B81.00
82.34
9.40
2.82
18694.6
88.72
2.22
20.89
13.24 59.85 9.80
5.17 14.40 3.71

e~r' K~~~v (~g)
w.s. Elev (ft)
Crlt W.S. (ft)
E.G. slope (ft/ft)
Q.TPta.l (cfs)
~~~ ~~~~~ ~~~~s)
MU chl opth (ft)
~~~~th T~~d ~ mF
NinchEl (ft)
Alpha
~T~ ~~~~ Hn

7817.79
1.37
7816.42
7816.42
0.013611
2181.00
82.34
9.40
3.82
18694.6
530.94
7812.60
1.00
5.70
0.05

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The energy equation could not be balanced within the specified number of iterations. The
program used crit1cal depth for the water surface and continued on with the calculations.
~~: ~~~~~y Sj6~~ o;a~a~r~~t~~ ~h~~n1~g f~rM:~ l~). db~~:~e~hih~r~~~~:~t d:~~h p~:~~~~~t~~g~s secti on.
This may indicate the need for additional cross sect10ns.
During the standard step iterations, when the assumedwaur surface w as,setegualtocritical
depth, the calculated water surface came back below critical depth. ThlS ind1cates that there is
not a valid subcritical answer. Theprogramdefaultedtpcriticaldepth.
profile nO-year

Warning:
lfIarning:
warning:
warning:

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CROSS SECTION OUTPUT
I-E.G.EleV(ft)
Vell!eadCFt)
ttt~. ~;;S
E.G. slope (ft/ft)
QTotal (ds)
~~~ *~~~~ f~~}s)
Mu chl Opth Cft~
~~~~thT~~d~ fm
NinchEl (ft)
Alpha
FrctnLoss (ftl
C&ELoss (ft

Element
lOt. n-val.
~n.-{ft;~
FlOW Area (sqft)
:'i~: g1srt)
TopWldth(ft)
Avg.vel. (ft/s)
Kydr tJepth(ft)
cony. (cfs)
wetted Per. (ftl
shear (lb/sq ft
Stream power (1 Ifts)
cumvolum..(acre-ft)
cum SA (acres)

L~~~5gB CS~O'W Rig~a5gB
l:?1.-49--il'-.7-9-6Glh#
164.74 158.10 22.64
164.74 158.10 22.64
501.91 1101.75 5J.34
177.23 82.34 34.94
3.05 6.97 2.36
0.93 1.92 0.65
4722.7 10367.0 501.9
178.06 82.37 35.14
0.6\ 1.35 0.45
1.99 9.43 1.07
23.59 46.67 23.41
16.26 14.40 16.10

7816.07
0.55
;;;.;. ~;
0.011294
1657.00
294.51
4.80
2.92
15591.,
540.94
7812.60
1.53
4.83
0.00

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The energy equati~n could not be balanced within the specified number of iterations. The
pro<}ram used crit1cal depth for the water surface and contlnued on with the calculations.
Divlded flow computed for this cross-section.
The energ):' 1055 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,
ouring the standard step iterations, when the assumed water surfa ce was set egual to critical
depth, the calculated water surface came back below critical depth. This ind1cates that there is
not a valid subcritical answer. The progrilmdefaulted to critical d.pth.

warning:
warning:
warning:
warning:

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CROSS SECTION OUTPUT Profile#50-year
E.G. Elev(ft) 7816.31 Element Left DB Channel Rig~~5gB
vel Head (ft) 0.64 ... n-val. 0.050 0.035
...5. Elev (ft~ 7815.67 Reach Len. (ft) 523.49 532.79 600.34
cdtw.s. (ft 7815.67 Flow Area (sqft) 191.32 170.24 n.90
E.G. Slope (ft/ft) 0.012319 :16: ~~1srt) 191.32 170.24 27.90
Q Total (ds) 2031.00 652.57 1301.67 76.76
~~~ *~~~~ m}S) 303.54 TOPW1dthfft) 184.78 82.34 36.42
5.21 AV~. vel. ft/S~ 3.41 7.65 2.75
MU chl Opth (fts 3.07 Hyr.O..pth(ft 1.04 2.07 0.77
conv.Total (ds 18298.7 conv. (cfs) 5879.5 11727.6 691.6
Length wtd. (ft) 540.58 wetted per. (ft~ 185.62 82.37 36.63
NinchEl (ft) 7812.60 shear (1b/sq ft 0.79 1.59 0.59
Alpha 1.53 Stream power (11ft s) 2.70 12.15 1.61
~T~ ~~~~ m~ S.B cumvolwne(acre-ft) 29.18 52.34 30.43
0.00 Cum SA (acres) 18.12 14.40 18.57

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The energy ..quati~n could not be balanced within the specified number of iterations. The
program used critlcal depth for the water surface and continued on with the calcubtions.
Palle40

Warning:

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