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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Ma~ ehl Opeh (ft)
conv. Total (cfs)
length Wed. (ft)
MinchEl eft)
Alpha
Frctnloss(ft)
C &- E Loss (ft)

4.66
21914.1
590.11
7914.25
1.26
5.76
0.05

Hydt.Depth(ft)
conv. (cfs)
Wetted per. eftl
Shear (1b/sqft
StreamPower(ljfts)
cum volume (acre-ft)
Cum SA (acres)

1.54
1730.4
22.54
0.92
4.72
40.09
23.02

CrystalR;ver.rep
4.66 2.94
168HZ.) 3301.4
30.59 18.34
2.88 1.74
33.97 11.08
72.8, 41.63
H.OD 24.46

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warning:

The energy equation could not be balanced within the specified numbe rofiterations. The
program selected the water surface that had the leaH ;uIOuntoferror between computed and
assumed values.
~~~s e~:?r n~~~:t:i1.~h~r~:~r f~~a~d~i~;!~afOc~o~~' s~~~~~. the cumnt and previous cross section.
During the standard step iterations, when the ass....,td water surface was set e~ual to critical
depth, the calcula.ted water surface came back below critiul depth. This ind1cates that there is
not a valid subcritical answer. The program defauHed to critical depth.

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warning:
warning:

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CROSS SECTION OUTPUT Profile#Floodway
~~r' H~~~v (~W 7920.70 Element left 08 Channel Ri8~~sgs
1.79 wt.n-val. 0.050 0.035
w.~. Elev ~ft~ 7918.91 Reachlen. (ft) 658.53 592.77 538.05
crlt W.S. ft 7918.91 Flow Area (sqft) 33.52 142.54 51.59
E.G. Slope (ft/ft) 0.00990\ ~1~: ~~~srt) 33.52 142.54 51.59
Q Total (cfs) 2.1&1.00 172.22 161\.0.11 128.57
~~~ ~~~~ ~~Us) 69.96 Top W1dth ~ft) 21.80 30.59 17.S7
9.58 AV~. vel. ft/s~ 5.14 11.79 6.37
",axchlopth(fts 4.66 Hyr.oepth(ft 1.54 4.66 2.94
conv. Total ~CfS 21914.1 Cony. (efs) 1730.4 16882.3 3301.4
lengthwtd. ft) 590.11 wetted Per. (ft~ 22.54 30.59 18.34
~in ch El (ft) 7914.25 Shear (lb/sqft 0.92 2.&8 1.74
Alpha 1.26 streamPower(l/fts) 4.72 33.97 11.08
~rit~ ~~~~ mS 5.76 cum volume (acre-ft) 19.29 79.28 14.67
0.05 cum SA (acres) 7.59 19.00 6.27

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warning:

The energy equation could not be balanced within the specified num berofiterations. The
program selected the water surface that had the least amount of error between computed and
assumed values.
Theenerg:t' loss was greater than 1,0 ft (0.3m). between the current and previous cross section.
This may lndicate the need for addltional cross sections.
During the standard step iterations, when the assumed water surface was set equal to critical
depth, the calculated water surface came back below critical depth. This ind1cates that there is
not a valid subcritical answer. The program defaulted to critical depth.

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Warning;

Warning;

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CROSS SECTION OUTPUT ProfilellO-year
~~r' H~~~v e~W 7919.75 Element left OS Channel Rig~~5gs
1.61 ". n-val. 0.050 o.on
w.s. Elev (ft~ 791&.14 Reachlen. (ft) 658.53 592.77 538.05
critw.s. (ft 7918.14 FlowArea(sqft) 23.19 119.01 38.64
E.G. Slope (ft/ft) 0.011127 ~j~: ~~~srt) 23.19 119.01 38.64
QTotal (ds) 1657.00 111.57 1318.42 227.00
~~~ ~~~~~ ~~~}S) 58.25 Top Width ~ft) 11.55 30.59 16.11
9.16 Avg. v~l. ft/s~ 4.81 11.08 5.88
Max chl opth (ft~ 3.89 Hydr.Depth(ft 2.01 3.89 2.40
conv. Tou 1 ~CfS 15708.7 conv. ecfs) 1057.7 12498.9 2152.0
length wtd. ft) 590.04 wetted per. (ft~ 12.19 30.59 16.69
MinchEl eft) 7914.25 shear (lb/sqft 1.32 2.70 1.61
Alpha 1.24 stream power (l/fts) 6.36 29.94 9.45
~rit~ ~~~~ un 5.89 cum volume (acre-ft) 30.40 62.57 29.36
0.10 cum SA (acres) 20.06 19.00 20.07

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I

warning;

The energy equation could not be balanced within tht specified number of iterations. The
program selected the water surface that had the lea~t all>Ount of error bHween computed and
assumed values.
The energ).' loss was greater than 1.0 ft (0.3 m). between the current and previous cross section.
This may ,ndicate the need for additional cross sections.
During the standard step iterations, when the assllmed water surface was set equal to critical
depth. the calculated water surface came back below critical depth. This ind1cates that there is
not a valld subcritical answer. The program defaulted to critical depth.

warning:
warning:

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CROSS SECTION OUTPUT profile',O-year
~~~. H~~jV e~W 7920.45 Element left OS Channel Ri8~~5gB
1.79 ". n-val. 0.050 0.035
~~~t ~:~: ~m 7918.66 Reach Len. (ft) 658.53 592.77 518.05
7918.66 Flow Area (sq ft) 29.56 134.88 47.25
E.G. slope (ft/ft) 0.010563 Area ~s~ ft) 29.56 134.88 47.25
QToul ecfs) 2031.00 Flow c s) 150.32 1582.45 298.23
~~~ ~~~~~ H~~s) 60.73 TopWldth(h) 13.04 30.59 17.10
9,59 AVl vel. (ft/g 5.08 ll.n 6.31
.MlI.X.-chLop_tILil..t) :'\+.41 ")' ~ Dep.th..(f ~ ~~ . ., , ~6
conv.Toul (cfs) 19761.4 conv. (efs) 1462.6 15397.0 2901.8
length wtd. (ft) 590.04 ~h~~~d (~~/sq em 13.77 30.59 17.81
MinchEl (ft) 7914.25 1.42 2.91 1.15
Alpha 1.25 Stream Power (lb/ft s) 7.20 34.11 11.04
Frctnloss ~m 5.87 cum volume (acre-ft) 37.19 70.02 37.90
CS,ElOSS 0.08 cum SA (acres) 22.13 19.00 23.47

I

warning:

The energyequatlon could not be balanced within the specified nu mber of iterations, The
program selected the water surface that had the least amount ofer rOr between computed and
assumed values.
The energ).' loss 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.
During the standard step iterations, when the assumed water surface was set equal to critical
depth, the calcula.tedwater surface came back below critical depth. This ind1cates that there is
not a valid subcrai,al answer. The program defaulted to critical depth.

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Warning:
Warning;

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CROSS SECTION CUlPUT Profil,,'50<)-yur
~~r' H~~jV e~g> 7921.22 Element left OS Channel Ri8~~5~B
1.87 ". n-val. 0.050 0.035
~~~t ~~~: ~m 7919.35 Reach Len. eft) 658.53 592.77 B8.05
7919.35 Flow Area (sqft) 45.42 155.86 59.42
E.G. slope (ft/ft) 0.009361 ~j~~ f~~srt) 45.42 155.86 59.42
QToul (ds) 2515.00 227.06 1&95.69 392.25
~~~ ~~~~~ ~~~}S) BO.93 TOP width (ft) 31.95 30.59 18.39
9.65 ~~~~.v~~Pt~flm 5.00 12.16 6.60
Mu chl Opth (ft~ 5.10 1.42 5.10 3.23
conv. Tota 1 ~cfs 25994.5 conv. (cfs) 2346.9 19593.4 4054.2
length wtd. ft) 590.38 wetted per. (ft~ 32.71 30.59 19.27
MinchE1 (ft) 7914.25 Shear (lb/sqft 0.&1 2.98 1.80
Alpha 1.30 Stream power (1 /ft s) 4.06 36.22 11.90
FrctnlOss mi 5.73 cum volume (acre-ft) 47.39 79.14 49.93
CS,ElOSS 0.00 Cum SA (acres) 26.84 19.00 27.61

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warning:
warning:
warning:

The energy equati on coul d not be balanced wi thi n the specHi ed number of i te.ration~. The
program used critlcal depth for the water surface and continued 0 nwith the calcula-dons.
The eneql).' loss 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.
During the standard step 1terations. when the assumed water surface was set e9ual to cridcal
depth, the calculated water surface came back below critical depth. This indlcates that there is
not avalidsubcritical answer. The program defaulted to critical depth.

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