FLOOD10515

• County: Gunnison
• Community: Marble and Vicinity
• Stream Name: Crystal River
• Basin: Gunnison
• Title: Floodplain Information Report Crystal River - Technical Appendix
• Date: 5/1/2004
• Prepared For: Marble and CWCB
• Prepared By: ICON Engineering, Inc.
• Floodplain - Doc Type: Floodplain Report/Masterplan

warning: The energy equation could not be balanced within the specified m.nber of iterations~ The
prograJI used critical depth for the water surface and continued on with the calculations.
Warning: 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.

Warn; ng: ~~~~~~ ~~: ~~f~~f~~e~t:~t~~e;~~}:~:. c:=n b~~~ ~:~:e~r~f~~ 1 s~~:~~~ w~i~ef nd'~:~e~O t~~~ t~~::e is

not a valid subcritical answer. The program defaulted to critical depth.

CROSS SECTION OUTPUT Prof; le #Floodway

7895.10 Element
2.10 Wt. n-Val.
7893.00 Reach Len. (ft)
7893.00 Flow Area (sq ft)

02~i:~~ ~~~: ~~Mt)

59.45 Top width (ft)
9.18 AV9. Vel. (ft/s)
5.76 Hydr. Depth (ft)
22828.9 Conv. (efs)
487.15 wetted Per. (ft~
7887.24 Shear (lb/sq ft
1. 60 Strean Power (1 /ft s)
4.87 Cum volume (aere-ft)
0.05 CUll SA (acres)

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C & E LosS (ft)

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~~ f' H:~av (~g>

w.~. Elev (ft)
Crlt W.S. (ft)
E.G. Slope (ft/ft)
Q Total (efs)
TOp wi dth (ft)
Vel Total (ft/s)
Max chl Opth Cft)
Conv. Total (cfs)
Length wtd. (ft)
Mi n ch El (ft)
Alpha
Fretn Loss (ft)
C & E loss (ft)

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warni ng:
warni ng:
warni og:

The energy equation could not be balanced within the specified number of iterations. The
program used critical depth for the water surface and continued on with the calculations.

iCis e~:~grn~~~:t:a:h~r~:~~r f~~~d~i~i~~afOc~o~~' s~~~~:. the current and previous cross section.

~~~~~ i~: ~~~~~~~:e~t~t~~e~~~}:~:. C=nb~~~ ~f~r~f~~l s~~:;~~ w~i:efnd'~:~e~o t~~~t~~:~e is
not a valid subcritical answer. The program defaulted to critical depth.

o.os

Cum SA (acres)

Left 08
0.060
479.98
30.32
30.32
132.26
10.68
4.36
2.84
1384.4
12.12
1.43
6.22
17.79
6.85

22.28

channel
0.035
486.68
128.90
128.90
1676.97
22.44
13.01
5.74
17553.2
22.44
3.27
42.58
71.21
17.12

~?tlalR1Ye~i~:r

Ri8~86gB

492.59
78.25
78.25
371.77
26.33
4.75
2.97
3891.4
27.50
1.62
7.70,
12.60
5.48

CROSS SECTION OUTPUT Profi 1e #lO-year
~~f' H:~av (m) 7894.04 E1 ement left 08 channel Ri 3~86gB
1.80 wt. n-Va l. 0.060 0.035
w.s. Elev ~ft~ 7892.24 Reach Len. (ft) 479.98 486.68 492.59
Crit W.S. ft 7892.24 Flow Area (sq ft) 22.71 111.75 58.73
E.G. Slope (ft/ft) 0.009175 :f::J~~sjt) 22.71 111.75 58.73
Q Total (efs) 1657.00 90.25 1325.14 241.62
TO~ wi dth ~ft) 56.39 Tap dth ~ft) 9.23 22.44 24.72
Ve Total ft/s) 8.58 AV9' vel. ft/s~ 3.97 11.86 4.11
Max chl Opth (ft~ 5.00 Hy r. Depth (ft 2.46 4.98 2.38
Conv. Tota 1 ~ cfs . 17299.0 Conv. (efs) 942.2 13834.4 2522.5
Len9th Wtd. ft) 487.11 Wetted Per. (ft~ 10.48 22.44 25.72
M;n ch El (ft) 7887.24 shear (lb/sq ft 1.24 2.85 1.31
Alpha 1.57 Stream Power (l 1ft s) 4.93 33.82 5.38
Fretn Loss ~ft~ 4.99 Cum Volume (acre-ft) 29.31 55.68 27.78
C&ElOSS ft 0.04 CUIII SA (acres) 19.48 17.12 19.34

Warning: The energy equation could not be balanced within the specified mnber of iterat.ions. The
program used critical depth for the water surface and continued on with the calculations.
Warning: 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.

warni ng: ~~~~~~. ~~: ~~f~~f~~e~t=t~~e~:~~:~: "e::n b~~~ g:f::e~r~:f~~ 1 s~~::~~ ~i :ef n~~~:~e~o t~~~ t~~:~e is

not a vaHd subcritical answer. The program defaulted to critical depth.

CROSS SECTION OUTPUT Profi 1 e ISO-year

7894.81
2.03
7892.79
7892 . 79
0.009208
2031.00
58.57
9.05
5.54
21165.8
487.14
7887.24
1.59
4.90
0.06

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M'H:~~v(m)

W.S. Elev (ft)
crit w.s. (ft)
E.G. Slope (ft/ft)
Q Total (efs)
Top w; dth (ft)
Vel Total (ft/s)
Max ch 1 opth (ft)
Cony . Total (cfs)
Len9th wtd. (ft)
M; n Ch El (ft)
Alpha
Frctn lOSS (ft)
C & E loss (ft)

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Element
wt. n-val.
Reach Len. (ft)
Flow Area (sq ft)
Area (sq ft)
Flow ~cfs)
Tap W1 dth (ft)

~~9~. V~~j,t~f~m
Conv. (cfs)
Wetted Per. (ft)
~~~:~ (~~~:~ ff~/ft s)
Cum volume (acre-ft)
Cwn SA (acres)

Left 08
0.060
479.98
28.02
28.02
119.59
10.26
4.27
2.73
1246.3
11.64
1.38
5.90
35.82
21.48

channel
0.035
486.68
123.97
123.97
1578.34
22.44
12.73
5.52
16448.5
22.44
3.18
40.43
62.28
17.12

Ri 8~86gB

492.59
72.52
72.52
333.07
25.87
4.59
2.80
3471.0
26.99
1.54
7.09
35.98
22.70

Warning:
warning:
warning:

The energy equation could not be balanced within the specified number of iterations. The
program used critical depth for the water surface and continued on with the calculations.
i~fs e~:~gr n~1~:t:a~h~r~:~~r f~~a~dai~i~~afOc~o=~' s~~~~~~. the current and previous cross section.
During the standard step iterations. when the assuned water surface was set ~ua1to critical
depth, the calculated water surface came back below critical depth. This indlcates that there is
not a valid subcritica1 answer. The program defaulted to critical depth.

CROSS SECTION OUTPUT Profile #SOO-year
~~i. H~~~v (m) 7895.72 E1 ement left DB channel Ri 3~8~8
2.27 wt. n-val. 0.060 0.035
W.~. E1ev ~ft~ 7893.45 Reach len. (ft) 479.98 486.68 492.59
Cnt W.S. ft 7893.45 Flow Area (sq ft) 35.26 138.89 90.18
E.G. slope (ft/ft) 0.009090 :f~: ~~1s~t) 35.26 138. 89 90.18
Q Total (efs) '2515.00 161.49 1895.05 458.46
TO~ Width ~ft) 61. 21 TOp width (ft) 11.50 22.44 27.27
Ve Total ft/s) 9.51 ~~9~. V~~j,t~ f~~g 4.58 13.64 5.08
Max Ch 1 Opth (ft~ 6.21 3.07 6.19 3.31
Conv. Tota 1 ~cfs 26379.0 Conv. (efs) 1693.8 19876.6 4808.6
Length Wtd. ft) , 487.16 wetted Per. (ft) 13.05 22.44 28.54
M;n ch El (ft) 7887.24 ~~~:~ (:~~:~ m/ft s) 1.53 3.51 1.79
Alpha 1.62 7.02 47.92 9.12
Frctn loss ~m 4.84 Cum volume (acre-ft) 45.59 70.38 47.56
C & E Loss 0.05 Cum SA (acres) 25.99 17.12 26.79

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warning: The energy equation could not be balanced within the specified number of iterations. The
program used critical depth for the water surface and continued on with the calculations.
warning: i~ts e~:~gfn~1~:t:a:h~r~:~~r f~~a~d~i~i~~afOc~o~~'s~~~~~. the current and previous cross section.
warning: During the standard step iterations. when the assumed water surface was set ~ual to. critical
depth.. the calculated water surface carne back below critical depth. This inthcates that there is
not a valid subcri.tica1 answer. The program defaulted to critical depth.

CROSS SECTION

RIVER: crys tal
REACH: ....rble RS: 15423

INPUT
Description:
station Elevation Data nunt:- 62
Sta e1ev Sta Elev Sta

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E1ev

Sta

E1ev

Sta

E1ev
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