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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addit;onal cross sect;olls.
warning: The conveyance rat1C1 (upstreamconveyancedividedbyd Ol\lflstreamconveyance) is less than
. 0.7 or greater than 1.4. Thismayindicatethenee<lforadditionalcrosssecticns.
'Harn~n!l: T'ne et'ler9'( loss was greater than 1.0 fe (0.3 m). between the current and previous cross section.
. This may Hld;cate the need for additional cross sections.
Warnulg: During the standard step iterations, when the assumed WHer surface was set e~ual to critical
depth, the calculated water sLlrhce came back below critical depth. This ;nd1cates that there is
not a valid subcrit1Cal answer. The program defaulted to critical depth.

crystalll:iver.rep

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CROSS SECTION OUT~UT Profilei'SeQ-year
e~r' H~~~V (?g) 7943.21 E1ement LeftOB cltannel Ri8~~6gB
1.32 ~, n-val. 0.060 0.035
W.~. Elev ~ft~ 7941.B8 Reach Len. (ftl 894.82 849.12 700.27
ern w.s. ft 7941.86 Flow Area (sqft) 93.89 163.48 25.37
E.G. slope (ft/ft) 0.009519 Mea ~s1 ft) 104.54 163.48 7875.52
Q.Total (ds) 1950.00 Flow cs) 222.82 1635.62 91.56
1"O~ width ~ft) 1907.11 TOP'flidttl?ftl 116.1\5 43.55 lH6.71
ve 1"otal ft/s) 6.90 AV~. Vel. ft/S~ 2.37 lO.OO 3.61
,..ax chl Opth (ft~ 5.56 fiyr.Oepth(ft 0.94 3.75 1.90
Conv. Total (cf~ 199116.7 conv.(cfs) 2283.8 16764.4 938.5
length Wtd. (ft) 849.80 wetted per. (ft~ 100.49 43.55 13.89
,..inChEl (ft) 7938.13 shear(1b/sqft 0.56 2.23 1.09
Alpha 1.79 stream Power (1 /ft s) 1.32 22.32 3.92
frit~ t~~~ Hg 6.50 cum volume (acre~ft) 118.19 105.09 158.07
0.:21 [UmSA(acres) 51.77 25.42 61.19

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warning: Oivi ded flow computed for this cross~section.
Warning: The velocity head has changed by more than 0.5 ft (0.15 m). This may indicate the need for
additional cross sections.
Warnin9: The ener9Y loss waS J;jreater than 1.0 ft (0.3 m). between the current and previous cross section.
This maYlndicate the need for additiond cross sections.
CROSSSE[TION

RIVER: Crystal
REACH:lolarble

RS: 21874

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INPUT
Description:
station Elevation Data nurn.. 161
sta Elev su. Elev Sta Elev Sta Elev Sta Elev
07970.61 .997970.38 2.327969.79 6.037968.12 12.57965.22
13.277964.811 19.27962.23 21.197961.39 22.687960.75 32.867956.43
51.73 7948.3 53.22 7947.67 B.n 7947.21 53.83 7947.13 62.517941.77
63.4 7<:141.2 67.21 7<:11&.66 71.04 79~IL65 760.81\ 7937.'B 1\3.767<:136.4a
a4.<:I97936.14 117.347935.7 119.567935.81 102.027936.23 104.127936.33
113.047<:136.62 124.4779]6.63 127.167936.62 B4.65 7936.5 155.017936.52
175.377936.l5 177.457936.16 195.737936.16 205.9179]6.23 215.167936.19
226.177936.25236.4579lS.96 241.167935.79 245.]57935.65 248.57935.64
256.817935.32 258.147935.26 260.927.935.18 267.127934.86 271.117934.69
326.747934.69327.827934.86 333.247935.78 336.13 7935.78 3311.247935.73
340.877935.7348.427935.76356.21.7935.65 358.667935.63 362.477935.73
369.117'HS.84 37S.527'J1&.Oa 386.557916.06 189.997936.04 394.577936.07
400.447936.02 402.67936.03 409.87936.08418.667936.17 421.327936.17
431.777936.29434.7179]6.]] 442.2179]6.38 458.797936.68 463.17936.75
466.827916.73 47l.547936.54 476.837936.44 479.547936.17 481.79 7935.9
483.177935.59 485.137935.21 487.647934.69 496.697934.69 503.477935.47
504.877935.56 507.37 7935.8 507.987935.86 514.65793L98 524.387935.64
526.457935.58 527.47935.46534.737934.86536.437934.68544.297935.13
546.647935.26 548.567935.U 557.87934.2957;'877934.15602.66 7934
655 7934 728.69 7934 733.27935.79 734.25 7936.1 73;.457936.39
737.847936..1-6740.647936.02746.267936.03 752.467935.85 757.057935.65
764.257935.64 771.167936.25 775.22 7936.25 778.667936.23 786.577936.17
790.187936.31792.2379]6.3879<:1.767936.66 809.167936.98 811.417937.16
817.5779]6.9821.747937.06824.047937.13 831.917937.l4 842.47937.28
847.267937.3851.667937.34 8537942.49 9517939.44 10527938.3
11.5579]8.43 11857941.4 12577938.24 13627938.1.3 14667937.96
lS6117938.25 1621.1 7939.9 1623.97931.55 16U.? 7917.58 16W.57<:14Q.0"l
16687939.49 17707939.5 1874793<:1.29 19757939.212083.527939.24
2086.387939.2821.06.1679]9.45 2116.67939.18 2118.67939.252121.397939.33
2128.017939.53 2129.66 7939.72 2132.18 7939.76 2134.057939.862140.94 7940.3
2UO.479]9.892U4.05n41.9112l74.057947.692177.37n4<:1.692~3.%7953.23
2184.547954.122185.37954.74 21811.87957.512194.057961.86 2200.67965.88
2204.327968.26

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Manning's n values
Sta n v~l Sta
o .06 87.34

num_
nval
,OS

5
'"
557.8

nval SU
.035 728.69

n val
,OS

m
1257

nVal
o

BankSU:Left Right L/mgths:Leftchann"l Right
557.8 728.69 55236 570.84 551.05
IneffectiveFlow nu"'" ,
5ta-L 'itall. (Ie" permanent
o 463.1 7937 T
7352204.327941.72 T

[oeff contr. E~pan.
.1 .3

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CROSS SECTION OUTPUT ProfilelllOO-year
~e~' H~~~v (~g) 7936.40 Element left 08 Channel Ri8~~5g8
0.28 ~, n-val. 0.050 0.035
~;.rt ~~~~ ~~g 7"'36.12 Ruchlen. (ft) 552.]6 570.84 551.05
Flow Area (sq ft) 69.17 356.57 5.72
E.G. slope (ft/ft) 0.003984 ~~~; g1sjt) 201.1.3 356.57 13.94
Q.Total(cfs) 1691.00 120.39 1560.17 10.34
~~f ~~~~~ f~~~s) 481.53 TOPWidthfft) 273.90 170.89 36.74
3.92 AVg. vel. ft/S~ 1.74 4.311 1.81
"'ax ch 1 opth (ft~ 2.12 Hydr.Oepth(ft 0.90 2.09 1..01
cony. Total ~cfs 26790.2 cony. (ds) 1.907_3 24719.0 161.9
,engthWtd. ft) 563.24 wetted per. (ft~ 77.39 1.70.89 6.04
,..inchEl (ft) 7934.00 shear Clb/sqft 0.22 0.52 0.24
Alpha 1.1.7 Stream Power (lb/fts) 0.]9 2.17 0.43
frctnLOss (ft) 1.91 cum volume (acre-ft) lOO.32 91..91 80.44
C&ElOSS (ft) 0.03 Curn SA, (acres) 44.48 23.32 42.53

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'Hil.rI\~I'I9~ o~vio;kd flayj comp\.Ited for this uIlss-section.
warning: The energy loss was 9rellter than 1.0 ft (0.3 m). between the current and previo\.ls cross section.
This may lndi<;lIte the need for additional cross sections.

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CROSS SECTION OUTPUT profil" NFloodway
~e~'\\~ldv(~g) 7936.87 Element leftOB Channel Rig~~5gB
0.20 .e. ...-val. 0.050 0.035
~;'~t ~~~~ m~ 7936.67 Ruchlen. (ft) 552.36 570.84 551.05
Flow Area (sq ft) 15.84 449.78 9.11
E.G. Slope (ft/ft) 0.002046 Area ~s~ ft) 15.84 449.78 9.11
Q.Total (cfs) 1691.00 Flow c s) 29.92 1&46.64 14.45
TOf IoIidth ~ft) 185.00 ToP width (ft) 7.80 170.89 6.31
Ve TOul ft/s) 3.56 ~~~;..V~lpt~fHg 1.89 3.66 1.59
~~~v ~h~o~~~h ~~m 2.67 2.03 2.63 1.44
37181.7 conv. (cfs) &61.3 36401.0 31.9.4
LengthV/td. ft) 5&4.92 wetted Per. (ft~ 9.52 170.89 7.10
,..inchEl (ft) 7934.00 shear (1b/sqft 0.21 0.34 0.16
Alpha 1.04 Streampower(l/fts) 0.40 1.23 0.26
FrctnL05S "'j 1.32 cum volume (acre-ft) 28.72 101.06 22.34
C &. E LOSS ", 0.01 Cum SA, (acres) 10.52 23.]2 11.11
Pagell

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