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Last modified
1/26/2010 10:24:01 AM
Creation date
6/17/2008 2:35:59 PM
Metadata
Fields
Template:
Floodplain Documents
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
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<br />I <br /> <br />I <br /> <br /> crystal River. rep <br />Manning's n values num- 3 <br />Sta n val Sta n val Sta n val <br />0 .06 754.77 .035 798.32 .06 <br />Bank Sta: Left R; ght Lengths: left Channel R;ght coeff Contr. Expan. <br /> 754.77 798. 32 894.82 849. 72 700.27 .1 .3 <br />Ineffective Flow nu.... 2 <br />Sto L Sta R E1.v Permanent <br />0 583.89 7942.6 T <br />818.55 2676.64 7943.85 T <br />CROSS SECTION OUTPUT Profile #lOO-year <br />~~ f' H~l~v (~g> 7942 . 86 el ement Left 08 Channel R;8~~6gB <br /> 1.15 wt. "-val. 0.060 0.035 <br />~;'~t :~;~ ~fg 7941. 71 Reach Len. (ft) 894.82 849.72 700.27 <br /> 7941.71 Flow Area (sq ft) 78.10 155.85 23.08 <br />E.G. Slope (ft/ft) 0.008683 Area ~s1 ft) 86.05 155.85 7569.52 <br />Q Total (cfs) 1691.00 Flow C 5) 171.50 1442.45 77.05 <br />~:~ ~~~~ ~~~~s) 1886.08 Tap Wl dth ~ft) 97.98 43.55 1744.55 <br /> 6.58 AVS' vel. ft/s~ 2.20 9.26 3.34 <br />Max ch1 Opth (ft~ 5.39 Hy r. oepth (ft 0.93 3.58 1.81 <br />Conv. Total ~Cf5 18147.5 Conv. (cfs) 1840.5 15480.1 826.9 <br />Length wtd. ft) 849.75 wetted Per. (ft:~ 84.13 43.55 13.26 <br />M;n ch E1 (ft) 7938.13 shear (lb/sq ft 0.50 1.94 0.94 <br />Alpha 1.71 Str.... Power (11ft s) 1.10 17.95 3.15 <br />Fretn Loss ~m 4.81 Cum volllne (acre-ft) 103.27 96.91 141. 39 <br />C &, E losS 0.26 Cum SA (acres) 48.30 25.42 56.84 <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />warning: The energy equation could not be balanced within the specified number of iterations. The <br />Warning: gf~?~~ ~f~~ ~~~~~~:~ ~~~t~hf~r c~~:s~;~ii:~~face and continued on with the calculations. <br />warning: The velocity head has changed by mo....e than 0.5 ft (0.15 m). This may indicate the need for <br />additional cross sections. <br />warning: The conveyance ratio (upstream conveyance divided by downstream conveyance) is less than <br />0.7 or greater than 1.4. This may indicate the need for additional cross sections. <br />warning: :::~~s e~:;grn~~~:t:a~h~r~:~~r f~~a~d~i~i~~afOc~o:~. s~~i:~~. the current and previous cross section. <br />Warning: During the standard step iterations, when the assumed water surface was set e9ua1 to crit.ical <br />depth, the calculated water surface came back below critical depth. This indlcates that there is <br />not a validsubcritical answer. The program defaulted to critical depth. <br /> <br />CROSS SECTION OUTPUT Profile #Floodway <br /> <br />I <br /> <br />I <br /> <br />M'H~l~v(m) 7942 . 99 element Left OB channel R;8~~~B <br />1.28 wt. n-val. 0.060 0.035 <br />W.S. Elev ~ft~ 7941.71 R.ach Len. (ft) 894. 82 849.72 700.27 <br />crit W.S. ft 7941.71 Flow Area (sq ft) 77.77 155.68 5.62 <br />E.G. Slope (ft/ft) 0.009407 Area ~s1 ft) 85.67 155.68 5.62 <br />Q Total (cfs) 1691. 00 Flow c 5) 177 . 42 1498.69 14.89 <br />TO~ wi dth ~ft) 143.04 Tap Wldth ~ft) 97.81 43.55 1.68 <br />Ve Total ft/s) 7.07 AVS' vel. ft/s~ 2.28 9.63 2.65 <br />Max Ch 1 Dpth (ft~ 3.57 Hy r. Depth (ft 0.93 3.57 3.35 <br />Conv. Total ~cfs 17434.7 Conv. (cfs) 1829.3 15451. 9 153.5 <br />Length wtd. ft) 851.19 wetted Per. (ft~ 84.02 43.55 4.86 <br />M;n ch El (ft) 7938.13 sbear (lb/sq ft 0.54 2.10 0.68 <br />Alpha 1.65 Stream Power (11ft s) 1.24 20.21 1.80 <br />Frctn Loss m~ 3.24 Cum Vol urne (acre-ft) 29.76 106.97 22.46 <br />C&ELoss 0.32 cum SA (acres) 11.60 25.42 8.18 <br /> <br />I <br /> <br />I <br /> <br />Warning: The energy equation could not be balanced within the specified number of iterations. The <br /> <br />warning: g~~1~~ ~f~ ~~~~~~:~ ~~~t~hf~r c~~:s~~~~i~~~face and continued on with the calculations. <br /> <br />warning: The velocity head has changed by more than 0.5 ft (0.15 m). This may indicate the need for <br />additional cross sections. <br />Warning: The conveyance ratio (upstream conveyance divided by downst.recun conveyance) is less than <br />0.7 or greater than 1.4. This may indicate the neet:l for additional cross sections. <br />warning: The energv loss was greater than 1.0 ft (0.3 m). between the current and previous cross section. <br />This may lndicate the need for additional cross sections. <br />Warning: During the standard step iterations, when the asslned water surface was set ~ual to critical <br />dept.h. the calculated water surface came back below critical depth. This indlcates that there is <br />not a valid subcritical answer. The program defaulted to critical depth. <br /> <br />CROSS SECTION OUTPUT Profi le #10-year <br /> <br />I <br /> <br />I <br /> <br />~~~. H~l~v(~W 7942.28 Element Left 08 channel R;8~~6gB <br />0.99 Wt. n-Va l. 0.060 0.035 <br />W.5. Elev ~ft~ 7941. 29 Reach Len. (ft) 894.82 849.72 700.27 <br />Crit W.S. ft 7941. 29 Flow Area (sq ft) 45.41 137.69 18.06 <br />E.G. slope (ft/ft) 0.008413 ~~~: ~~Mt) 48.70 137.69 6843.17 <br />Q Total (cts) 1284.00 74.37 1154.98 54.65 <br />TO~ wi dth ~ ft) 1864.09 Top wi dth ~ft) 82.32 43.55 1738.22 <br />Ve Total ft/s) 6.38 AVS' vel. ft/s~ 1.64 8.39 3.03 <br />Max ChI Dpth (ft~ 4.97 Hy r. oepth (ft 0.61 3.16 1.60 <br />Conv. Tota 1 ~cfs 13998.8 Cony. (cfs) 810.8 U592.1 595.8 <br />Length wtd. ft) 848.66 Wetted Per. (ft~ 74.19 43.55 11.74 <br />M;n ch El (ft) 7938.13 shear (lb/sq ft 0.32 1.66 0.81 <br />Alpha 1.57 Stream Power (1 1ft 5) 0.53 13.93 2.44 <br />Frctn loss (ft~ 5.07 Cum Volume (acre-ft) 80.54 81.98 116.18 <br />C &0 E LOSS (ft 0.22 Cum SA (acres) 43.16 25.42 50.02 <br /> <br />I <br /> <br />I <br /> <br />warning: <br />warning: <br />warni ng: <br />warning: <br />warning: <br /> <br />The energy equation could not. be balanced within the specified number of iterations. The <br />proqram used critical depth for the water surface and continued on with the calculations. <br />Divlded flow com~uted for this cross-section. <br />The velocity head has changed by more than 0.5 ft (0.15 m). This may indicate the need for <br />additional cross sections. <br />i~ts e~:~grn~~~:t:a~h~r~:~~r f~~a~d~i~i:~afOc~o~~' s~~~~~~. the current and previous cross section. <br />During the standard step iterations. when the assumed water surface was set e9ual to critical <br />depth. the calculated water surface came back below critical depth. This indlcates that there is <br />not a valid subcritica1 answer. The program defaulted to critical depth. <br /> <br />I <br /> <br />CROSS SECTION OUTPUT Profile #5Q-year <br />E.G. E1.v (ft) 7942 . 70 E1 ement Left OB channel R; 8~~~B <br />vel Head (ft) 1.06 Wt. n-Val. 0.060 0.035 <br />W.S. E1ev (ft~ 7941. 64 R.ach Len. (ft) 894.82 849.72 700.27 <br />Cdt w. s. (ft 7941. 64 Flow Area (sq ft) 72.27 152.79 22.19 <br />E.G. Slope (ft/ft) 0.008189 Area ~s1 ft) 79.26 152 . 79 7446.89 <br />Q Totol (cfs) 1575.00 Flow c 5) 148. 72 1355.28 71.00 <br />TO~ width ~ft) 1882.20 Tap width (ft) 94.99 43.55 1743.67 <br />Ve Total ft/s) 6.37 AVS' vel. (ft/s~ 2.06 8.87 3.20 <br />Max ch1 Opth (ft~ 5.32 Hy r. Depth (ft 0.88 3.51 1.77 <br />Conv. Total (cfs 17404.5 conv. (cfs) 1643.4 14976.5 784.6 <br />Length wtd. (ft) 849.57 wetted Per. (ft) 82.15 43.55 13.00 <br />Hi n ch E1 (ft) 7938.13 ~~~:~ (~~~:~ n~/ft s) 0.45 1.79 0.87 <br />Alpha 1.69 0.93 15.91 2.79 <br />Fretn Loss ~ft~ 4.53 Cum volume (acre-ft) 96.49 92.91 133.80 <br />C&ELOSS ft 0.24 Cum SA (acres) 47.07 25.42 55.11 <br /> <br />I <br /> <br />I <br /> <br />warni ng: <br />warning: <br />Warn; ng: <br /> <br />The energy equation could not. be balanced within the specified number of iterations. The <br />p....oqram used critical depth for t.he water surface and continued on with the ca.lculations. <br />DiVlded flow computed for this cross-section. <br />The velocity head has changed by more than 0.5 ft (0.15 Ill). This may indicate the need for <br />Page 10 <br /> <br />I <br /> <br />I <br />
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