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FLOOD10515
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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 />MaX ch 1 Dpth (Ft) <br />Cony. Total (cfs) <br />Length wtd. (ft) <br />Min ch El (ft) <br />Alpha <br />Fretn Loss (ft) <br />C " E Loss (ft) <br /> <br />4.66 <br />21914.1 <br />590.11 <br />7914.25 <br />1.26 <br />5.76 <br />0.05 <br /> <br />~~~~: ~~~~~ (ft) <br /> <br />wetted Per. (ft~ <br />Shear (lb/sq ft <br />Stream Power (lIft s) <br />Cum volume (acre-ft) <br />Cum SA (acres) <br /> <br />I <br /> <br />warning: <br /> <br />1.54 <br />1730.4 <br />22.54 <br />0.92 <br />4.72 <br />40.09 <br />23.02 <br /> <br />crystalRiver.rep <br />4.66 2.94 <br />16882.3 3301.4 <br />30.59 18.34 <br />2.88 1.74 <br />33.97 11.08 <br />72.85 41.63 <br />19.00 24.46 <br /> <br />I <br /> <br />Warn; ng: <br />Warn; ng: <br /> <br />The energy equation could not be balanced within the specified number of iterations. The <br />program selected the water surface that had the least amount of error between computed and <br />assumed values. <br />~~is e~:~grn~~~:t:a~h~r~:~~r f~~a~dai~i~~afOc~o:~' s~~gw:~~. the current and previous cross section. <br />Duri~ the standard step iterations, when the assuned water surface was set ~ual to crideal <br />depth, the calculated water surface came back below critical depth. This ioelleates that there is <br />not a valid subcritical answer. The program defaulted to critical depth. <br /> <br />CROSS SECTION OUTPUT Profile 'Floodway <br />~;,f' H~~~v (m) 7920.70 el ement Left 08 channel Ri8~85gs <br />1.79 wt. n-Val. 0.050 0.035 <br />w.S. Elev (ft~ 7918.91 Reach Len. (ft) 658.53 592.77 538.05 <br />Crit W.S. (ft 7918.91 Flow Area (sq ft) 33.52 142.54 51.59 <br />E.G. Slope (ft/ft) 0.009905 Are. JS1 ft) 33.52 142. 54 51.59 <br />Q Tot.l (cfs) 2181.00 Flow c s) 172.22 1680.21 328. 57 <br />TOf W'idth ~ft) 69.96 Tap dth ~ft) 21.80 30.59 17.57 <br />Ve Tot.l ft/s) 9.58 AVS' vel. ft/s~ 5.14 11.79 6.37 <br />Max Chl Opth (ft~ 4.66 Hy r. Oe"th (ft 1.54 4.66 2.94 <br />Conv. Total ~cfs 21914.1 ConY. (cts) 1730.4 16882. 3 3301.4 <br />Length wtd. ft) 590.11 wetted Per. (ft~ 22.54 30.59 18.34 <br />Min Ch El (ft) 7914.25 shear (lb/sq ft 0.92 2.88 1.74 <br />Alpha 1.26 Stream Power (11ft s) 4.72 33.97 11.08 <br />Fretn Loss m~ 5.76 Cum volume (acre-ft) 19.29 79.28 14.67 <br />c &E loss 0.05 Cum SA (acres) 7.59 19.00 6.27 <br /> <br />I <br /> <br />I <br /> <br />Warning: <br /> <br />I <br /> <br />Warning: <br />warni ng: <br /> <br />The energy equation could not be balanced within the specified number of iterations. The <br />program selected the water surface that had the least amount of error between computed and <br />assumed values. <br />The energ~ 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 />Dur; ng the standard step iterations. when the assumed water surface was set ~ual "to critical <br />depth. 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 />I <br /> <br />CROSS SECTION OUTPUT <br /> <br /> <br />~;,f'H~~~v(m) <br /> <br />w.~. Elev (ft) <br />Crlt W.S. (ft) <br />E.G. slope (ft/ft) <br />Q Total (cfs) <br />TOp W'idth (ft) <br />vel Total (ft/s) <br />Max chl Opth (ft) <br />COnv. Total (cfs~ <br />Length wtd. (ft) <br />Min Ch El (ft) <br />Alph. <br />Frctn LOSS (ft) <br />C &, E loss (ft) <br /> <br />Profi 1 e 'lO-year <br /> <br />7919.75 Element <br />1.61 Wt. n-val. <br />7918.14 Reach Len. (ft) <br />7918.14 Flow Are. (sq ft) <br />0.011127 ,Area (sq ft) <br />1657.00 Flow ~cfs) <br />58.25 Top WIdth (ft) <br />9.16 Avg. vel. (ft/s) <br />3.89 Hydr. Oe"th (ft) <br />15708.7 Cony. (cfs) <br />590.04 wetted Per. (ft~ <br />7914.25 shear (lb/sq ft <br />1.24 Stream Power (11ft s) <br />5.89 Cum volume (acre-ft) <br />0.10 cum SA (acres) <br /> <br />I <br /> <br />I <br /> <br />warning: <br /> <br />Left 08 <br />0.050 <br />658.53 <br />23.19 <br />23.19 <br />111.57 <br />11.55 <br />4.81 <br />2.01 <br />1057.7 <br />U.19 <br />1.32 <br />6.36 <br />30.40 <br />20.06 <br /> <br />channel <br />0.035 <br />592.77 <br />119.01 <br />119.01 <br />1318.42 <br />30.59 <br />11. 08 <br />3.89 <br />12498.9 <br />30.59 <br />2.70 <br />29.94 <br />62.S7 <br />19.00 <br /> <br />Ri8~85g. <br /> <br />538.05 <br />38.64 <br />38.64 <br />227.00 <br />16.11 <br />5.88 <br />2.40 <br />2152.0 <br />16.69 <br />1.61 <br />9.45 <br />29.36 <br />20.07 <br /> <br />warni ng: <br />warni ng: <br /> <br />The energy equation could not be balanced within the specified number of iterations. The <br />program selected the water surface that had the least amount of error between computed and <br />assumed values. <br />The energ~ loss was greater than 1.0 ft (0.3 m). between the current and previous cross section. <br />Thi s may 1 ndi cate the need for addi ti ona 1 cross secti ons. <br /> <br />~~~~~~ ~~: ~;f~~f~~e~t:~t~~e~~~}~~:. c=:nb~~~ ~f:e~r~f~~ls~~:~~~ w;~i~efn~~~:~e~o t~~~t~~:~e is <br />not a valid subcritical answer. The program defaulted to critical depth. <br /> <br />CROSS SECTION OUTPUT Profile #50-year <br />~;,f' H:~~v (tW 7920.45 element Left 08 channel Ri 8~85g. <br />1.79 wt. n-Va 1. 0.050 0.035 <br />W.S. Elev (ft~ 7918.66 Reach Len. eft) 658.53 592.77 538.05 <br />crit W.S. (ft 7918.66 Flow Area (sq ft) 29.56 134. 88 41.25 <br />E.G. slope (ft/ft) 0.010563 Are. ~S1 ft) 29.56 134.88 47.25 <br />Q Total (cfs) 2031.00 Flow c s) 150. 32 1582.45 298.23 <br />~~f ~~~~ ~mS) 60.73 Tap W'i dth ~ ft) 13.04 30.59 17.10 <br />9.59 AVS' vel. ft/s) 5.08 11.73 6.31 <br />Max chl opth (ft) 4.41 Hy r. oe"th (ft) 2.27 4.41 2.76 <br />Conv. Total ~CfS) 19761. 4 Conv. (cfs) 1462.6 15397.0 2901.8 <br />length Wtd. ft) 590.04 Wetted Per. (ft~ 13.77 30.59 17.81 <br />Min ch El (ft) 7914.25 shear (lb/sq ft 1.42 2.91 1. 75 <br />Alpha 1.25 Stream Power (lIft s) 7.20 34.11 11.04 <br />Frctn loss (ft~ 5.87 Cum volume (acre-ft) 37.19 70.02 37.90 <br />C& E LOSS (ft 0.08 Cum SA (acres) 22.13 19.00 23.47 <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />Warn; n9: <br /> <br />I <br /> <br />Warning: <br />Warning: <br /> <br />The energy equation could not be balanced within the specified number of iterations. The <br />program selected the water surface that had the least amount of error between computed and <br />assumed values. <br />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 />During the standard step iterations, when the assunted water surface was set ~ual to critical <br />depth, 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 Profile 'SOO-year <br />~;,f' H~~~V em) 7921. 22 El ement Left 08 Channel Ri8~M8 <br />1.87 wt. n-Va 1. 0.050 0.035 <br />w.~. Elev ~ft~ 7919.35 Reach Len. (ft) 658.53 592.77 538.05 <br />Cl"1t W.S. ft 7919.35 Flow Are. (sq ft) 45.42 155.86 59.42 <br />E.G. slo~e (ft/ft) 0.009361 Area ~s1 ft) 45.42 155.86 59.42 <br />Q Total (cts) 2515.00 Flow c s) 227.06 1895.69 392.25 <br />~~f ~~~~ ~~~~S) 80.93 Top W'idth ~ft) 31.95 30.59 18.39 <br />9.65 AVS' Vel. ft/s~ 5.00 U.16 6.60 <br />Max ch 1 opth (ft) 5.10 ~n~: ~~~~~ (ft 1.42 5.10 3.23 <br />Conv. Total (Cf5) 25994.5 2346.9 19593.4 4054.2 <br />Length wtd. (ft) 590.38 Wetted Per. (ftl 32.71 30.59 19.27 <br />Mi n ch El (ft) 7914.25 she.r (lb/sq ft 0.81 2.98 1.80 <br />Alpha 1. 30 Stream Power (lIft s) 4.06 36.22 11.90 <br />Frctn loss (ft~ 5.73 Cum volume (acre-ft) 47.39 79.14 49.93 <br />C &, E Loss (ft 0.00 Cum SA (acres) 26.84 19.00 27.6J <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />warning: <br />Warning: <br />warning: <br /> <br />The energy equation could not be balanced within the specified number of iterations. The <br />program used critical depth for the water surface and continued on with the calculations. <br />The energ~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 crass sections. <br />During. the standard step iterations. when the assumed water surface was set f!CJual to critical. <br />depth, the calculated water surface came back below critical depth. This irnhcat.es that there is <br />not a valid subcritical answer. The program defaulted to critical depth~ . : <br /> <br />I <br /> <br />I <br /> <br /> <br />page 25 <br /> <br />
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