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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421.18551.987788.34
1096 12207795.23

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CR0555ECTIONOUTPUT
eef' H:~~V (~g>
w.~. El~v Cft)
crn 101.5. (ft)
E.G.. 51Q~ {ft/ft)
QTon.l(efs)
TOp Widtll (ft)
vel Total (ft/s)
MaxclIl optll (ft)
Conv.Total (cfs)
LengtllWed. (Ft)
MinCIIE1(ft)
Alplla
FrctnLoss(ft)
C &. E LOSS (ft)

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Profile .nOO-y~ar

7788.27
0.79
7787.47
0.Q08'1.~E.
2181.00
337.21
6.23
3.8~
23176.3
H4.87
7783.62
1.31
1.79
0.14

,
,

Element
Wt.n-val.
R~acll Len. (fe)
Flow Area (sq fe)
"'rea ~sq ft)
Flow ~cfs)
TOpWldtll(ft)
Avg. Vel. (ft/s)
Hydr. oeptll (ft)
Cony. (cfs)
..eteedPer. (ftl
shear (lb/sqft
streampower(l/fts)
Cum volume (acre-ft)
Cum SA (acres)

Left DB
0.050
246.51
92.98
11H.Q3
303.35
222.06
3.26
1.29
3223.6
73.79
0.70
2.27
15.41
8.50

Channel
0.035
473.80
241.19
241.1~
1844.74
90.90
7.65
2.65
19603.1
91.05
1.46
11.20
41.44
9.59

CrystalRiver.rep

R;g~65gB
527.55
15.95
15.95
32.91
24.25
2.06
0.66
349.7
25.17
0.35
0.72
14.06
9.34

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warning: Divided flow computed for this cross-section.
warning: The conv~yance ratio (upstream conveyance divided by downstream conveyance) is less than
0.7 Or greater than 1.4. This may indicate the need for additional cross sections.
Warning: The energ:t' loss was gr~ater than 1.0 ft (0.3 m). between the current and previous cross section.
This may lndicate the need for additional cross sections.
CROSS SECTION OUTPUT profil~ IFloodway

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e~f' H~l~v (~~F
...s. ElevCft)
Crit 101.5. (ft)
E.G.. slope (ft/ft)
QTotal (ds)
Top width (ft)
Vel Total (ftjs)
Ma><ChlOpth(ft)
Conv.Total (efs)
Lengthwtd. (ft)
MinchEl(ft)
Alpha
~r~t~ ~~~~ ~m

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7789.12
O.GB
7788.44
0.004944
2181.00
90.90
6.63
4.82
31019.2
460.90
7783.62
1.00
2.23
0.02

Element
wt.n-val.
Ruch Len. (ft)
Flow Area (sq ft)
~j~: ~~1s~t}
Top width (ft)
Avg.vel. (ft/s)
Hydr.Depth(ft)
Corw. (cfs)
Wetted Per. (ftl
shear (lbjsqft
StreamPoYll!r(l/fts)
cum volume (acre-ft)
Cum SA (aeres)

LeftoB Channel Right DB
(1.035
246.51 473.80 527.55
329.20
329.20
2181.00
90.90
6.63
3.62
31019.2
99.56
1.02
6.76
7.27 44.31 5.34
2.50 9.59 2.14

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Warning: Theellergrlosswugreaterthall1.0ft (0.3m) be~eenthecurrentandprev-;ouscross section.
ThismaYlndicatetheneedforadditionalcrosssectlonS.

CROSS SECTION OUTPUT profilellO-year
eeT'H~~v(~W 7787.87 Element Left DB Channel Rig~~~B
0.>1 ". n-V..l. O.OiO 0.015
~;'~t ~~~: m~ 7787.36 Reach Len. (ft) 246.51 473.80 527.55
Flow Area (sQ ft) 84.63 230.67 13.54
LG.Slope(ft/ft) 0.006050 ~l~: f~1srt} 162.10 230.67 13.S4
Q Total (ds) 1657.00 214.85 1415.53 26.62
~~~ ~~~~~ m3s) 316.43 Top wi dth ~ ft) 209.19 90.90 16.34
5.04 AV~. \lel. ftjS~ 2.54 6.14 1.97
Ma>< Ch 1 Dpth (ft~ 3.74 Hyr. Depth (ft 1.17 2.54 0.83
conv. Tota 1 ~dS 21303.5 conv. (ds) 2762.3 18198.9 342.2
Lengthwtd. ft) 446.75 wetted per. (ft) 73.52 91.05 17.26
Mln ch El (ft) 7783.62 ~~~:~ (~~~~~ H~/ft s) 0.43 0.96 0.30
Alpha 1.30 1.10 5.87 0.58
Frctn LOSS(ft) 2.21 cum volume (acre-fe) 10.75 35.17 7.86
" , Loss(ft) 0.01 Cum."" (acr..s) 7.23 9.59 7.45

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Warning' Divided flow computed for this cross-section.
Warning: Theenergr loss was greater than 1.0 ft (0.3m). between the current alld previous cross sec:rion.
This may lndieate the need for additiona1 cross sectlons

CROSS SECTION OUTPUT rrofile#50-year
E.G. Elov(ft) 7788.15 Element LeftOB Channel Rib~65~B
vel Head (ft) 0.71 ". n-Val. 0.050 0.035
101.'. Elev (ft) 7787.45 Reach Len. (ft) 246.51 473.80 527.55
critw.s. (ft) Flow Area (sq ft) 91.07 238.79 15.32
E.G. slope (ftjft) 0.007982 ~l~: t~~srt) 181.22 238.79 15.32
QTotal (ch) 2031.00 278.39 1722.47 30.14
~~~ ~~~~~ m3s) 332.90 Top Width (ft) 218.88 90.90 23.12
5.88 ~~a;'. V~~Pt~f~m 3.06 7.21 1.97
Ma><ChlOpth(ft) 3.83 1.26 2.63 0.66
conv.Total (ds) 22732.8 COny. (cfs) 3116.0 19279.5 337.4
LengthWtd. (ft) 437.76 wetted Per. (ft~ 73.73 91.0S 24.04
Min ch El (ft) 7783.62 shear (lb/sq ft 0.62 1.31 0.32
Alpha 1.31 Stream power (1 Ifts) 1.a8 9.43 0.62
FrctnLOSS (Ft) 1.91 Cum volume (ecre-fe) 14.07 39.74 12.28
C&ELOSS (ft) 0.11 cums....(acres) 8.24 9.59 9.09

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warning:
Warning:

oivided flow computed for this cross-section.
The conveyance ratio (upstream conveyance divided by downstrea m conveyance) is,less than
0.7 or greater than 1.4. This may indicate the needforaddltional crosssect1ons.
Th~ ~nerg:t' loss was greater than 1.0 ft (0.3 m). between the current and previous CrosS section.
This may , ndicat~ th~ need for additional cross sections.

warning:

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CROSS SECTHM OUW\lT HoHle .SOO-year

E.G. Elev(ft)
vel Head (ft)
".5. Elev (ft)
critw." (ft)
E.G. slope (ftjft)
QTotal(cfs)
~~~ ~~~~~ m3s)
~~~v ~h ~o~~ih (~~~~
Length wtd. (ft)
MinchEl (ft)
Alpha
FrctnLoss(fe)
C & E LOSS (ft)

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7788.52
0.97
7787.56
7787.53
0.010399
2515.00
351.44
6.86
3.94
24663.2
429.33
7783.62
1.32
1.52
0.21

Element
Wt.n-val.
Reach Len. (ft)
Flow Area (sqft)
~j~: 1~1srt)
TOp width (ft)
~~gr. V~~Pt~f(m
Conv. (cfs)
wetted per. (ft)
Shear (lbjsq ft)
Stream power (lbjft s)
cum volume (acre-ft)
Cum SA (acres)

Leftoa
0.050
246.51
99.24
206.~8
365.74
232.58
3.69
1.37
~ 586.6
73.99
0.87
3.21
19.48
11.68

Channel
0.035
473.80
249.04
249.04
2108.70
90.90
8.47
2.74
20678.8
91.05
1.78
15.03
45.25
9.59

RightOB
0.050
527.55
18.21
18.21
40.56
27.96
2.23
0.65
397.8
28.88
0.41
0.91
18.36
10.49

warning:
Warning:
Warning:
Warning:

Divided flow computed for this cross-section.
The velocity head has changedbymorp. thanO.5ft (O.lSm). This may indicate the need for
additlonalcrosssections.
,he conveYilJl(;e ratio {lIpstru,m cnnveY1l.nc.t <livil\el\ by d<>wnscre,am conveYllnce) is less than
0.7 or greater than 1.4. This may indieate the need for additional cross sections.
Theener9ylosswasgreaterthanl.0ft(0.3m).betweenthecurreneandprev;ouscrosssecdon.
This may ,ndicate the need for additional cross sections.

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CROSS SECTION

RIVER: Crystal

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