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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CrystalRiver.rep
depth, the calculated water surface came back belowcr1tlCal depth. This indicates that there is
not a val1dsubcntlcal answer. The progr~ defaulted to critical depth.

CROSS SEcnON OUTPUT
~er'Il~!~v (~g>
w.~. Elev (ft)
crnll.s. (ft)
E.G. Slope (ft/ft)
QTotal (cfs)
~~f ~~~~~ m~S)
lIIa~ ehl Dpth (ft)
~~~~i:h T~~~~ ~~g)
MinChEl (ft)
Alpha
Frctnloss(ft)
C & E loss (ft)

Profile#10-year
7901.81 Element
1.63 wt. n-Val.
7900.19 Ruchlen. (ft)
7900.19 rlowArea(sqft)
0.011654 Area (sq ft)
1657.00 Flow (cfs)
57.73 TOp width (ft)
9.41 AV9.vel. (ft/s)
3.50 Hydr.Depth(ft)
15349.2 COny. (ds)
498.37 wetted Per. (ft!
7B96.69 shear (lb/sqft
1.18 Stream Power (l/fts)
5.14 cum VOlume (acre-h)
0.02 cum SA (acres)

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warning:
warning:
warning;

The energy equation could not be balanced within the specified number of iterations. Tile.
program used critical depth for the water surface and continued on with the calculations.
i~i/~:?r n~~~~t:a~h~r~:~:r f~~a~d~i~i ~~a fO c~o~~. s~~~i6~~. the current and previous cross section.
Ouring the standard step iterations, when the assumed water surface WaS set e~ual to critical
depth,thecalculatedwatersurfacecamebackbelowcriticaldepth. This indlcates that there is
notll'lalidsubccritkal answer. TMllrogramdefa\llte.dtocritical depth.

leftOB
0.060
493.09
9.97
9.97
34.92
5.65
3.50
1.76
323.4
6.65
1.09
3.82
29.49
19.57

Channel
0.035
498.06
145.94
145.94
1540.61
41.75
10.56
3.50
14271.0
41.75
2.54
26.85
57.15
17.48

Ri8~66gB
503.19
20.22
20.22
B1.4B
10.32
4.03
1.96
754.7
10.93
1.35
5.42
2~.24
19.54

CROSS SECTION OUTPUT Profilelc50-year
~er' H~!~v (~~5' 7902.>1 Element LeftOB Channel Ri~~~6g8
1.84 wt.n-val. 0.060 0.035
w.~. Elev ~ft~ 7900.67 Reachlen. (ft) 493.09 498.06 503.19
crHw.S. ft 7900.67 FlowArea(sqft) 12.90 166.23 25.45
E.G. slope (ft/ft) 0.011156 ~f~= ~~~:;rt) 12.90 166.23 25.45
QTotal (cfs) 2031.00 48.20 1B72.42 110.3B
~~~ ~~;~ ~~Ds) 19.16 TOll width ~ft) 6.U 41.75 11.18
9.93 AV~. Vel. ft/S~ 3.74 11.26 4.34
Ma.~ Chl Opth (ft~ 3.9B Hyr.Deptl1(ft 2.01 3.9B 2.28
conv. Tota 1 ~CfS 19229.0 COny. (ds) 456.3 177n.7 1045.0
length Wtd. ft) 49B.41 wetted Per. (ft~ 7.56 41.n 11.92
lIIinchEl (ft) 7896.69 Shear (lb/sqft 1.19 2.77 1.49
Alpha 1.20 StreamPower(l/fts) 4.44 31.24 6.45
F((tn LOSS ~ft) 5.04 Cum volume (acre-ft) 36.05 63.94 36.54
c &. E loss ft) 0.02 cum SA (acres) 21.57 17.48 22.92

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warning:
Warning:
warnin9:

The energy equation could not be balanced within the specified number of herations. The
program used critical depth for the water surface and continued 0 nwiththecalcullltions.
The energ", loss was greater than 1.0 ft (0.3 m). between the current and previous cross section.
This mllY lndicate the need for Ildditional cross sections.
Ouring the standard step iterations, when the assumed water surface was set egual to critical
depth,thecalculatedwatersurfacecamebackbelowcriticaldepth. This indlcates that there is
notavalid.ubcriticalanswer. The program defaulted tG critical depth.

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C[l.OSSSECTIONOUTPUT
~er'Il~!d'l(~~P
~;~t ~:~~ ~m
E.G. slope (ft/ft)
QTotal (cfs)
~~~ ~~~~~ ~~US)
Maxchl0pch(ft)
Conv.Total (cfs)
le.nqthwtd. eft)
lIIinchEl (ft)
Alpha
FrctnlGSs(ft)
C&Eloss(ft)

profile#500-yoear
7'Ml3.34 Elell\ent
2.09 wt. n-Val.
7901.25 Reachlen. (ft)
7901.25 Flow Area. (sq ft)
0.010670 Area(sqft)
251S.00 Flow ~ds)
61.3l Top Wldth ~ft)
1~: ~g ~~~r. v~~Pth f~m
24347.4 cony. (cfs)
498.45 wetted per. Cftl
7B96.69 shear (lb/sqft
1.22 Streampower(l/fts)
4.90 cum volume (acre-ft)
0.02 Cum SA (acres)

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\.eft 09
0.060
493.09
16.90
16.90
67.55
7.35
4.00
2.30
654.0
8.65
1.30
5.20
45.89
26.10

<::h!>nnel
0.03S
498.06
190.44
190.44
2297.13
41.75
12.06
4.56
22238.2
41.75
L04
36.65
72.26
17.48

Ri&~~6g'
503.19
32.23
32.23
150.31
11.21
4.66
2.64
1455.2
11.09
1.64
7.65
48.26
27.02

warning:
warning:
warning:

The energy eq\lation could not be balanced within the specified n\lm berofiterations. The
program used critical depth for the water surface and continued on with the calculations.
The energ", loss was greater than 1.0 ft (0.3 m). between the current and previous cross section.
Thi. may lndicate the need for additional Cross sections.
During the Handard step iterations. when the assumed water surface was Set egual to critical
depth. the calculated water surface came back below critical depth. This lndlcates that there is
not a valid s\lbcritical answer. The program defaulted to crincal depth.

Bank Sta: left Right lengths: Left Channel Right coeffContr. E~pan.
7L32 95.76 479.98 486.68 492.59 .1 .J
CROSS SECTION OUTPUT Profile#100-yea.r
e~r' H~!~v (lW 7895.10 Element leftOB Channel Rig~~6gB
2.10 W<. n-val. 0.060 O.OlS
w.S. Elev (ft5 7891.00 Reach Len. (ft) 479.98 4B6.68 492.59
CritW.s. (ft 7B93.00 Flow Area (s'lft) 30.32 128.90 78.25
E.G. slope (ft/ft) 0.009127 ~f~: ~~~~rt) 30.32 128.90 7B.25
QTotal (ds) 2181.00 132.26 1676.97 371.77
~~~ ~~~~~ m}S) 59.4, lopwidtn(ft) 10.6~ 22.44 26.33
9.18 ~~9;. V~~Pt~f~m 4.36 13.01 4.75
MaxChl opth (ft) 5.76 2.84 5.74 2.97
Conv. Tota 1 ~CfS) 22828.9 cony. (cfs) 1384.4 17553.2 3891.4
length wtd. ft) 4B7.15 wetted per. (ft~ 12.12 22.44 27.50
MinchEl (ft) 7887.24 Shear (lb/sqft 1.43 3.27 1.62
Alpha 1.60 Stream Power (1 1ft 5) 6.22 42.58 7.70
Frctnloss(ft) 4.67 CUII\ '1<>l\ll\\e (acre.-ft) ~B.6\) ,,4.77 3!I.S6
paqe29

CROSS SECTION

RIVE~: crystal
REACH:lllarble

RS: 15909

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UII'Ul"
Description:
Station Elevadon oau
St!> tl..", Sta t'lev
07936.08 9.317926.67
19.67917.B 21.4B7916.72
40.977905.49 44.967902.95
56.B47B96.4 61.977B93.36
73.327887.28 95.767887.24
116.037890.23117.687891.04
140.037895.76 141.58789S.S3
161.057B96.81 162.497896.98
177.767902.73 1817905.05
211.347925.83213.387927.14
226.597926.16

"
"ta Ell''1
11.317924.91
32.947910.22
47.57901.47
68.73 7889.79
99.3788B.B5
120.257B92.13
143.987B95.9B
163.87897.18
192.247913.84
213.817927.35

su. Elev
14.437922.25
33.077910.15
51.457B99.37
69.47B89.41
100.647B89.61
126.287894.99
149.447B96.23
170.537B99.61
199.467918.82
218.247927.14

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Manning'snValues
Sta n val Sta
o .06 73.ll

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'"
91,76

nval
.06

"~-
nval
.035

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Sta Elev
19.157918.17
37.567907.76
54.73 7B97.61
72.5778B7.69
106.977889.89
128.157B95.1
151.927896.45
175.697901.41
206.717923.37
223.227926.92