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

554.027936.63560.717936.77
WO.1l7931.82604.021937.84
634.027938.44640.717938.)2
670.717939.84674.02 7940
704.027940.77720.717940.88
750.717942.01754.027942.24
760.717943.18784.027943.34
604.027944.2810.717944.59
640.717945.73 850.711945.86
884.027946.28900.717946.83
924.027947.73 940.717948.39
964.027948.113 972.38 7949.1
990.717950.19994.027950.42
1014.027951.231020.717951.62
1044.02 7952.n 105....011951.83
1074.027953.671084.027953.94
1104.027955.32 1110.71795S.45
1140.717956.421144.027956.52

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lllanninll'snValues
Sta nval Sta
o .06 139.6

num_ 5
nval Sta
.05280.63

CrystalRivel".rep
564.027936.85590.717937.56594.027937.64
620.717938.28624.027938.31 630.717938.39
644.027938.63650.717938.99660.717939.51
680.717940.22684.027940.26700.71 7940.7
724.027941.01740.717941.35744.027941.52
760.717942.73764.027942.85770.717942.99
790.71 7943.6 794.027943.74 800.71 7944
814.027944.68820.717945.07824.027945.29
854.027945.91864.027946.04880.717946.15
910.717947.23 914.027947.29 920.717947.55
944.027948.42954.027948.61960.717948.75
977.617949.51980.717949.78984.027949.94
1000.717950.621004.027950.711010.717951.11
1030.717951.891034.02 79521040.717952.17
lOE,O.717'l53.l9l0M.0279H.27:l070.7179B.45
1090.717954.461094.027954.731100.717955.25
1114.027955.6n20.7179B.731124.027955.86
1145.9179,6.65

nval
.035

nVal
.OS

m
369.18

!lv;!.1
.06

''"
310.6

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8ankSh:Left Right LenllthS'LeftChannel Rillht
280.63369.18 533.84544.56485.44
Ineffective Flow nurp.. 1
staL StaR Elev Permanent
o 173.96 7930.1 T

Coeffcontr. Expan.
.1 .3

CROSS SECTION OUTI'UT pl"ofile#100-year
~e~'H~~~v(m) 7931.46 Element Left 08 Channel Rig~a6g8
0.18 Wt. n-val. 0.050 0.042
w.S. Elev ~ft~ 7931.28 Rea.c.hLen. (ft) 533.M S44.5t 4&5.44
cdt W.S. ft Flow Area (sq ft) 169.80 387.70 53.39
E.G. slope (ft/ft) 0.001472 Area ~s~ ft) 262.51 387.70 53.39
QTotal (cfs) 1691.00 Flow cs) 223.77 1419.10 48.12
~~~ ~~~~ ~~~~S) 281.10 TopWldth(ft) 135.18 88.SS 57.37
2.77 AV~. vel. (ft/S~ 1.32 3.66 0.90
Max Chl Dpth (ft~ 5.33 Hyr.Depth(ft 1.26 4.38 0.93
conv. Total ~CfS 44077.8 conv. (cfs) 5832.9 ~6990,5 125~.4
Len9thwtd. ft) 531.63 Wetted Per. (ft~ 136.63 88.60 57.79
MinchEl (ft) 7925.95 Shear (lb/s'1 ft 0.11 0.40 0.08
Alpha 1.50 Stream Power (11ft s) 0.15 1.47 0.08
~rit~ ~~~~ ~m 0.15 Cum Volume (acre-ft) 62.61 83.25 54.58
0.05 CurnSA(acreS) 28.18 20.72 28.60

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warning: The conveyance ratio (upstreamconveyante divided by downstream tonveyance) islen than
0.7 or greater than 1.4. Thismayindicatetheneedforadditionaltrosssections.
CROSS SECnO"lOUTPUT Profile'Flood,.-ay

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~e1' H~~~~ (~g>
w.~. Elev (ft)
CrltW.S. (ft)
E.G. Slope (ft/ft)
QTotal (ch)
~~~ ~~~~~ ~~nS)
Maxchl Opth (ft)
conv.Total (ds)
Lengthwtd. (ft)
MinChEl (ft)
Alpha
~T~ t~~~ ~m

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7932.47
0.20
7932.27
0.001292
1691.00
88.55
3.56
6.32
47044.7
535.00
7925.95
1.00
0.63
0.01

Element
Wt. n-val.
Reach Len. (ft)
Flow Area (.q ft)
:~~: ~~1sjt)
TOP I/I1dth ~ft)
~;~r. V~~Pth f~~g
COny. (cfs)
wetted Per. (ftl
Shear (lb/s'1ft
Streampower(l/ft.)
Cum volume (acre-ft)
Cum SA (acres)

Left 08 Cnanl'l<!l Ri!lht os
0.043
533.84 544.56 485.44
475.60
475.60
1691.00
88.55
3.56
5.37
47044.7
99.73
0.38
1.37
2.3.15 90.37 19.1?
8.32 20.72 7.30

CROSS SECTIO~ OUTPUT profi le II10-year

~e~'H~~~V(~g)
W.S. Elev (ft)
critW.S. (ft)
E.G. slope (ft/ft)
Q Total (cfs)
3~~ ~~~~~ ~~~~5)
Max chl Opth (ft)
Lconv.Total(CfS)
LengthWtd. (ft)
MinchEl (ft)
Alpha
~=-<ftl
c & E LOSS (ft)

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7930.27
0.31
7929.96
0.003475
1284.00
226.38
4.34
4.01
21780.5
533.14
7925.95
1.06
0:08

;~~m~~~..l. Lti:~5g8 C~~~~il Rig~~6gB
Reach Len. (ft) 533.84 544.56 485.44
Flow Area (sq ft) lL34 270.83 12.02
:~~= g1sjt) ~~:M 199:g~ t~:~~
l~~ wt~fh H~~s) 12~:~~ 8::~~ ~J~
~ydr tkpth Cft) 2.07 3.0& 1.2&
Conv (cfs) 576.7 20864.7 B9.0
wetted Per (ft~ 7.60 88.60 9.89
Shear (lb/sq ft~ 0.38 0.66 0.26
~~(J~J~)-&-~-7~:it---#:-t;
CurnSA(acreS) 25.06 20.72 23.07

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warning: Divided flow computed for this cross-settion.
Warning: The conveyance ratio (upstream conveyance divided by downstream conveyance) is leu than
0.7 or greater than 1.4. This may indicate the need for additional cross sections.
CROSS SECTION OUTPUT Profile.f5(1-year

~er'H~~~V(~g) 7931.12 Element Left 08 Channel Rig~~6g8
0.22 Wt. n-val. 0.050 0.042
~r~t ~:~~ ~m 7930.90 Reach Len. (ft) 533.84 544.56 485.44
Flow Area (sq ft) 118.57 353.72 32.94
E.G. slope (ft/ft) O. 0019~6 ~'i~: ~~1s~t) 210.91 353.72 12,94
Q1"otal (ch) 1575.00 142.11 1404.31 28.58
~~~ ~~~~~ ~~~~s) 268.21 1"opwidth(ft) 133.70 88.55 45.96
3.12 ~~9r. vg~Pt~f~m 1.20 3.97 0.87
lllaxChl Opth (ft) 4.94 0.89 3.99 0.72
conv.Total ?CfS) 35796.8 Conv. (cfs) 3230.0 31917.4 649.5
Lengthwtd. ft) 532.28 wetted per. (ft~ 135.11 88.60 46.37
lIi!lchElCft) 7915.95 s.hur(1b/sq(t (1.11 0.48 0.09
Alpha 1.46 Stream power Clb/ft s) 0.13 1.92 0.07
Frctn LOSS ~ft~ 0.18 Cum Volume (acre-ft) 57.76 79.80 49.33
c & E Los. ft 0.06 CurnSA(acreS) 27.21 20.72 27.33

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Warning: The Convey~nce ratio (upstream conveyance divided by downstream conveyance) is lus than
(1.7 or greater thi!.1'\ 1.4. T\\is lIIa't indiCAte th!c !le~d for additional CrOSS sections.

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CROSS SECTION OUTPUT Pl"ofilef500-year
~e~'H~~~v(~~5' 7932.19 Element Left 08 Channel Ri8~~6g8
0.12 Wt. n-val. 0.0,0 0.042
~~~t ~~~~ ~~g 7932.07 Reach Len. eft) 533.84 S44,56 485.44
Flow Are~ (s'1 ft) 277.15 457.40 105.3,
E.G. slope (ft/ft) 0.000910 ~~~: ~~~St) 370.10 457.40 105.35
QTotal (cfs) 1950.00 392.21 1458.03 99.76
TO~ width ~ft) 300.18 Top Width (ft) 138.22 88.55 13.40
Ve Total ft/s) 2.32 ~~9~. V~~Pt~f~m 1.42 3.19 0.95
Max chl Dpth (ft~ 6.12 2.01 5.17 1.44
ccnv. ToU.' ~cfS 64631.5 Corn. Cds) :12999.6 48325.4 3306.'
LengthWtd. ft) 530.32 Wetted Per. (ft~ 139.78 88.60 13.84
~in ch El Cft) 7925.95 shear (lb/5q ft 0.11 0.29 0.08
page 16

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