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

I

I

crystalRiver.rep
warning: ~~~i~~~~ilt~r~~:ds~~~i~~:~ed by more than 0.5 ft (0.1; m). This may indicate the need for
warning: The energ~ loss was greater than 1.0 ft (0.3 m). between the current and previous cross section.
This may lndicatethe Med for additional cross sections.
warning: ~~~~~~ ~~: ~~~~~t~~e~t:~t~~e~~~}~~~. c:~:n b~~~ ~~l:e~rr~~~~, s~~~~~~ w~~i~ef n~~~:~e~O t~~i t~h:~e ; 5
not a valid subcritical answer. The prC)grlllJl defaulted to cdeical depth.
CROSSSECTIONO\ITPUT Profile,fSOO-year

~~~. H~~~v (fW 7882.99 Element LeftOB Channel Ri8~56gB
2.09 lOt. n-val. 0.060 0.035
w.s. Elev pt~ 7880.89 Reaehlen. (ft) 520.60 502.01 487.00
crie 10.5. ft 7880.89 Flow Area (sq tt) 50.49 143.50 70.00
E.G. Slope (ft/ft) O.OlO\lOl "'ru ~s~ ft) S~.4'.l 141.S0 70.00
QTotal (cfs) 2515.00 Flow c s) 236.08 1875.65 403.27
10~ '<lidt\-' ~ft) f>&.SO Top '<l,dth ~ft) 20.H 28.)4 2~l.C2
Ve Total ft/s) 9.n AV~. vel. ft/s~ 4.68 13.07 5.76
Mal( chl Dpth (ft~ 5.08 Hyr. Depth (ft 2.51 5.06 3.50
cony. Total ~CfS 24087.7 conv. (cfs) 2261.1 17964.2 3862.4
Lengthwtd. ft) 506.40 wetted Per. (ft~ 20.n 28.34 21.05
"'inchEl (ft) 7875.81 Shear (lb/sllft 1.65 3.45 2.26
Alpha 1.49 Stream power (1 Ifts) 7.74 45.04 13.04
Frctn Lou ~m 6.64 cum Volume (acre-ft) 45.12 68.80 46.65
C /I, ( Loss 0.25 Cum SA (acres) 25.82 16.83 26.52

I

I

I

warning:
warning:
warning:
warning:

The energy equation could not be balanced within the specified number of iterations. The
program Ilsed critical depth for the water sllrface and continued On with the calClllations.
The velocity head has changed by more than 0.5 ft (O.15m). This may indicate the need for
additional cross sections.
:::~~ s e~:?r n~~~:t;a~h~r~:;~r f~~a~d~j ~i~~afO(~o~~' s~~~{~~~. the current and previ ous cross section.
During the standard step iterations, when the a~sumed water surface was set egual to critical
depth, tile calculated water surface came back below critical depth. This ind,cates that there is
not ..valid subcritial ""swer. T~ prognmdefaulted to critical depth.
CRDSSSECTION

INPUT
Descriptio,,:
Station Elevation Data num_
Sta Elev su Elev
07910.52 2.497908.55
20.87894.01 21.577893.81
46.857887.01 54.297885.02
64.647882.24 757879.46
103.947872.27106.087871.77
144.717868.66147.517868.6
172.687868.21 177.B 7868.1
218.U7e.66.29 22L257866.25
245.35 7865.7 249.47864.98
307.917862.82310.24 7863
325.257862.78326.497862.6
346.967862.28 349.73 7862.61
363.037864.76371.85 7870
388.897881.02389.417881.41
404.977892.84410.427895.47
426.327902.87427.197903.36

I

I

RIVER: Crystal
REACH: Marble

I

I

RS: 14921

80
Sta Elev
6.087905.79
23.217893.37
55.017884.83
79.477878.27
121.567869.88
157.877868.42
185.497868.04
225.877866.2G
256.657863.59
311.447863.09
329.547862.3
353.647863.06
374.937870.38
396.237885.69
4157897.28
430.057902.69

SU Elev
12.857900.37
30.547891.39
57.677884.11
95.72 7873.91
126.447869.22
161.027868.35
199.31 7866.97
212.2.478G6.11
260.437862.89
316.287863.27
344.217861.98
358.37863.53
375.847870.89
401.957890.88
417.527898.55
433.757900.92

Sta (lev
14.47899.14
43.937887.8
63.167882.64
96.017873.85
136.567868.8
168.23 7868.3
209.677866.55
242.7786'i.\l3
287.967&62.81
323.627862.88
344.887862.06
360.1> 7863.73
382.037874.77
403.32 71191.84
420.527900.09
435.987900.58

I

Manning' ~ n Vi\llle~ O~_ S
m n Val ''" nval ". nVal m n val '" nval
0 ." 245.35 .OS 329.54 .035 346.96 .OS 360.lS .00
Bi\nksta: Left Right Lengths: Left Channel Right CoeffCcntr. Expan.
329.54 346.96 552.68 542.09 587.67 ., .3

C/tDSSSECTIONOUTPl/T Profile nOO-year

I

E.G. Elev (ft)
vel Head (ft)
~;.h ~~~~ m~
E.G. slope (ft/ft)
QTotal (cfs)
~~~ ~~~~~ m~S)
MaxchlOpth(ft)
Conv.Total (cfs)
Lengthllltd. (ft)
MinChEl (ft)
.",.,.
~T~ ~~~~ ~m

I

I

7866.56
1.17
7865.39
7865.39
0.016681
2181.00
117.24
7.7l
3.41
16883.9
554.68
7861.98
LV'
6.5l
0.10

~~~m~~~al. L~:~5gB c~~g~~l Rig~~5gB
Reach Len. (ft) 552.68 542.09 587.67
Flow Area (Sllft) 190.73 56.65 34.89
~1~ ?~~srt) l~j~:n 6~t~~ 2~1:~~
Top Wldth (ft) 82.45 17.42 17.37
Avg.vel. (ft/.) 6.70 12.03 6.36
Hydr.oepth(ft) 2.31 3.25 2.01
conv. (cfs) 9891.4 5274.4 1718.1
~h;~~d(j~/s/m 8L~~ 1~:~~ 1~~
~"~'u" P'tIIVI!rtttr1t'rn--ro.ug-4~fJ.01
CumVolllme(acre-ft) 36.80 62.23 38.22
Cum SA (acres) 21.51 16.57 23.21

warning:

The ener9Y 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.
Theenergvlosswasgreaterthan1.0ft (0.3m).betweenthecurrentandpreviouscroS5section.
This may ,,,dicate tne. need fot add~t~ol'la' uo~~ 5o'!=.......,tm~.
Durinll the standard step iterations, when the assumed water surface was set egual to critical
depth, the calculated water surface came back below critlcal depth. Thi~ lndlCates that there is
notavalidsubcriticalanswer. The programdetaulted to critical depth.
CROSS SECTION OUTP\lT Profile ~Floodway

The energy eqllation could not be balanced within the specified numb er of iterations. The
progr1llll used critical depth for the water surtace and continued on with the calculations.
The velocity head has changed by more than 0.5 ft (0.15 m). This lIlay indicate the need f"r
add; tion~l cross sections.
Theenern loss was 9reaterthan 1.0ft (0.3m). between the current and previous cross section.
This may lndicate the need for additional cross sections,
During the standard step iterations, when the assumed water surface was.set e9ual to critical
depth,thecalculatedwatersurfacecamebackbelowcriticaldepth. ThlS indlCates that there is
not a valid subcritical answer. The program def~ulted to critical depth.
CROSS SECTION OUTPUT profile#lO-year

warning:

w~rning:

I

E.G. Elev(ft)
Vel Head (ft)
W.S. Elev(tt)
Crit W.S. (ft)
E.G. Slope (ft/ft)
QToul (ds)
~~f ~~~~~ m~S)
~~~v~h~o~~fh (~m
Length wtd. (ft)
MinChEl (ft)
"lpha
~rit~ ~~~~ m~

I

I

Warning:

warning:

warning:

I

warmng:

I

I

7866.94
1.35
7865.59
7865.59
0.018922
2181.00
86.96
8.75
3.61
151155.1
548.65
7861.98
1.13
8.59
0.08

Element
wt.n-val.
Reach Len. eft)
Flow Area (sq ft)
~1~: ~~~srt)
TOp width (ft)
Avg. vel. (ft/s)
Hydr.oepth(ft)
COny. (ds)
~~;~~d S~/Sll (m
Strearnl'Cffler(lb/ft5)
Cum volume (acre-ft)
Cum SA (acres)

Left OR
0.050
552.68
189.02
189.02
1467.51
69.54
7.76
2.72
106611.3
72.22
3.09
H.OO
16.00
6.16

Channel
0.035
542.09
60.12
60.12
713.49
17.42
11.87
3.45
5186.8
20.75
3.42
~C.r,2
68.64
16.57

Right DB
587.67

11.46
5.11

Page 32