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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C &. E lQS'; (ft)

G.OE.

cum l>.... (;acres)

Warning:
warning:
warning:
warning:

The energy equition could not bebll.lancedwithill tile specified n twnber of iterations. The
pro9ramusedcriticaldepthforthewatersurfaceandcontinuedonwiththecalculations.
DivHled flow computed for this cross-section.
The energy 105s was llreat..r than 1.0 Ft (0.3 m), between the current and previous cross section.
This may ,ndieat.. the need for additional cross sections.
During the standard stell iterations, when the assumed water surface was set "9ua1 tG critical
depth, the calculated water surface came back. below critical depth. This ;nd,cates that there is
~~it~ or:' ~~1 ~~~~ri ~~~~~5 a~~,;;r fOU~~e a~r~~~:ml~~~~~~~~d ~~e c~~n~~~ 1 dd~~~~ wi eh the lowest, valid,
surface was used.

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Note;

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CROSS SECTION OUTPUT
ee~'I1~~~v C~W
w.s. Elev (ft)
Crit w.s. (ft)
E.G. slope (ft/ft)
Q Total (cfs)
~~~ ~~~i~ H~~s)
MaxchlOpth(ft)
Conv.Total (cfs)
length Wtd. (ft)
MinchEl (ft)
Alpha
FrctnlOSs (ft)
C &. E Loss (ft)

Profile#FloocMay
78B.92 Element
1.79 Wt. n-Val.
7832.13 Reach Len. (ft)
7832.13 Flow Area (sq ft)
0.012664 Area(sl'"
2181.00 Flow ~c 5)
158.23 TOpWldth(ft)
~:~: ~~~~. V~~Pt~f~~~~
19380.4 conv. (cfs)
490;,.58 'oIetud ~er. (ftl
7827.75 Shellr(lb/sqft
1..15 Streampower(l/fts)
6.'53 cum volume (ac"e-ft)
0.02 cum SA (acres)

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warning;
Warning;
warning;
Warning;

The energy equation could not be balancedwithil'l the specified numb erofiterations. The
pr09ram used critical depth for the "ate,. surface and continued on with the calculations.
Divlded flow computed for this cross-section.
i~~5 e~:?~n~~~:t:lI~h~r~:~:t f~~a~d~; ~i~~afO~:o~~' s~~ii~~~. the current and previous cross section.
During the standard step iterations, when the assumed water surface lollS set equal to critical
depth, the calculated water surface came back below critical depth. This indicates that there is
~~it~ pi:l ~~i ~i~~j; ~~~~~s a~;:r fou~~e a~r~~i:m 1 ~~~~i~~~d ~~e c~~{~i~ll d~~~~h wi th the 10W<!st, val i d, water
surf;!ce was used.

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Note:

20.19

is~~ia' Rive~o~:~

Water

Left 08
0.060
514.62
112.56
112.56
649.7.1
37.12
5.77
3.03
5773.7
3-7.7t
2.36
13.61
13.91
5.3-9

Channel
0.03-5
494.08
110.36
110.36
1404.96
25.37
12.73
4.35
12484.5
25.3-1
3.44
43.78
63.85
15.51

Ri8~~6gB
474.87
29.67
51.11
126.29
95.73
4.26
1.97
1122.2
15.71
1.49
6.35
10.08
4.23

CROSS SECTION OUTPUT Profile 1I10~year
~e~' H;l~v (~g> 78B.03- Element LeftOB Channel Rig~66gB
1.43 w<. n~val. 0.060 0.035
W.S. Elev (ft~ 7831.60 Reach Len. (ft) 514.62 494.08 474.87
Crit w.s. Cft 7831.60 Flow Area (sq ft) 93.20 96.90 22.87
E.G. Slope (ft/ft) 0.011845 Area ?s~ ft) 93.20 96.90 22.88
QTotal (cfs) 1657.00 Flow c s) 470.13 1094.04 92.83
~~~ ~~~i~ ~n~S) 74.30 Top wi dth ~ft) 35.87 25.37 13.05
7.78 AV~. vel. ftjS~ 5.04 11.29 4.06
~ax chl Dpth (ft~ 3.85 Hyr.Oepth(ft 2.60 3.82 1.94
conv. Total ~cfS 15225.2 conv. (cfs) 4319.8 10052.5 853.0
Length wed. ft) 495.89 Wetted Per. (fe~ 36.40 25.37 12.37
MinchEl (ft) 7827.75 shear (lb/sqft 1.89 2.82 1.37
Alpha 1.52 StreamP<>wer(ljfts) 9.55 31.89 5.55
FrctnLoss m; 5.78 cum volume (acre-ft) 25.17 49.71 24.43-
C&ElOSS 0.03 cum SA (acres) 17.49 15.51 17.09

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The energy equation could not be balanced within the specified num ber of iterations. The
pr<>9ramusedcriticaldepthforthewatersurfaceandcontinuedonwiththecalculations.
o1vlded flow computed for this cross-section.
The ..nerll~ 10.s was greater than 1.0 ft (0.3 m), between the current and previous cro.. section.
ThismaYlndicate the need for additional cross sections.
Durin9 the sundard step iteratlons, when the assumed water surface was set equal to critical
depth, the calculated water surface came back below critical depth. This indlcates that there is
~~f tf p i; 1 ~~i ~i~~li ~~~~~S a~:~~r fou~~e a~r~~i:m l~~:~i~~~d ~~e c~m~~~l d~~~~h wi th the lowest, val; d, water
surface waS used.

Warning'
warning:
Warnlng:

warning:

Note;

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CROSS SEcnONOliTPliT

Profile #50~year
7833.67 Element
1.71 lOt. n-val.
7831.96 Reachlen. (ft)
7831.96 Flow Area (sq fe)
oi~n~gg ~1~: ~~~St)
132.31 TOP Width (ft)
~:l~~~J~Ut~
18030.1 COny. Ccfs)
495.88 wetted Per. (ftl
7827.75 Shear(lb/sqft
1.53 Stream Power (1 1ft s)
6.26 Cum volume (acre-ft)
0.03 cum SA (acres)

~e~' H:l~v (}~r)
~~~t ~:~~ ~m
E.G. slope (ftjft)
I-QTotalCCf!<)
~~~ ~~~~~ Hns)
_ Mil.....::IH--Dpt.tl-{ft)
~~~~thT~~~~ mF
MinchEl (ft)
Alpha
Frctn LOSS (ff~)
C&ElOSS(L)

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Lo:66gB CS~b3~1 Rig~66gB
514.62 494.08 474.87
106.19 105.98 27,27
106.19 105.98 36.74
594.76 1314.67 121.S8
36.73 25.37 70.21
5.60 12.40 4.46
r.~"""l&-l.n
.1279.9 11670.9 1079.3
37.B 25.37 13.50
2.25 3.31 1.60
12.62 41.05 7.14
31.01 55.64 31.78
19.41 15.51 19.93

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warning; The energy equation could not be balanced within the spe cified number of iterations., The
warning: gi~~~:~ ~f~~ ~~~~~~:J ~~~t~hf~rc~~is~:~~~;~~~face and continued on Wlth the calculat10ns.
Warning: The energy loss WaS greater than 1.0 ft (0.3 m). between the current and previous CroSs section.
This may indicate the need for additional cross sections.
warning; ouring the standard step iterat10nS, when the a$sumed water surface was set equal to critical
depth. the calculated water surface came back below critical depth. This indicates that there is
~~ftr pi;l ~~i ~i~~ji ~~~~~s a~;~:r fou~~e a~r~~i:m l~~~~i~~~d ~~e c~~;~i~ll d~~~~h wi th the lowest, va 1i d, water
surface was used.

Note:

CROSS SECTION OUTPUT profile#.lOO-year
E.G. Elev(ft) 783-4.46 Element LeftOB Channel Rig~~6gB
vel Head (ft) 1.94 Wt.n-val. 0.060 0.035
W.S. Elev(ft) 7832.S2 Reach Len. (ft) 514.62 494.08 474.87
Crit W.S. eft) 7832.52 Flow Area (sqft) 127.16 120.22 36.53
E.G. slope (ft/ft) 0.0123304 ~r~: ~~1sjt) 127.16 120.22 99.51
QTotal (cfs) 2515.00 772.29 1599.06 143.65
~~~ ~~~~~ ~~nS) 222.36 Tap Width (ft) 38.04 25.37 158.95
8.86 ~~~~. v~~Pt~fHg 6.07 130.30 3-.93-
~ax chl Dpth (ft) 4.77 3.34 4.74 1.77
~~~~th T~~~ ~~W 22646.0 conv. (cfs) 6954.0 14398.6 1293.5
495.31 wettedper.(ft) 38.76 25.3-7 21.37
M;nChEl (ft) 7827.75 ~~~:~m e~~~;~ m/ft s) 2.53 3.65 1.32
Alpha 1.59 15.34 48.53 5.18
FrctnlOss ~m S.B Cum volume (acre-fe) 39.92 63.02 42.09
C & E LOSS 0.16 Cum SA (acres) 23.85 15.51 23.01

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Warning:
warninll:
Warning;
warning;

The ener!l'y equation could not be balanced within the specified num ber of iterations. The
g~~~~:~ ~f~~ ~~~~~~:~ ~~~t~hf~rc~~is~:~~~i~~~face and continued on with the talculations.
The velocity head has changed by more than 0.5 ft (0.15 m). This m~y indicate the need for
additional cross sections.
The energy loss was greater thll.n 1.0 ft (0.3m). between the curren t;!nd previou$ cross section.
Page 37

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