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<br />~5~1IS R~ <br />NORTH BASIN <br />NORTHBn51Nl[ONNOCFIANNp S 1IS <br />Worksheet 3: Time of coaceotratioR (Tc) or travel time (Tt) <br />Project. CYPRESS 20 MILE <br />LotaBOn: Ram County, Cobretlo <br />CpntliOOn: Developetl <br />Calwlabons for Tc <br />NOTES' <br />Sheet Flnw lApplicahle to Tc only) <br />1. Sudace tlesonption (table Y7) .......................................................... <br />2. Manninp's roughness [cell., n (table 3-1) ........................................ <br />9 Fbw knpN. L (total L ~= 700 R) ........................................................ <br />A Tvroyr 2<.hr rainfall. P2 .................._.......................................... .. . <br />5. laM slope. s ................................................................................. <br />a. Tr-(o.oo7(nL)•(oe)y(P2^tg.s)e•(o.~)1 c«roulen......._..... <br />Shallow tone n .+.led 11ow <br />7. Surtece Oesaipbon (pevetl «unpevetl) ............................................ <br />9 Fbw krpdr. L ........................................................................ <br />g. Watercourse slope. s ........................................................... <br />10. Avenge velocity. V (figure S7J ........................................ <br />11. n = v(3ego h Campuee n ............................... <br />Segment ID <br />Segment lD <br />0 <br />Nfl <br />Ne <br />fu <br />Sepmant lD <br />By: TPY <br />Checked: LR <br />0.1071 <br />0.23 <br />Date: 4/8/97 <br />Date: 4/8/97 <br />0.23 <br />NSI N52 NC53 NCS4 <br />unpaved unpaved w sued rmpaved <br />78l 491 467 120 <br />0.1152 0.1116 0.0749 0.2083 <br />3.48 5.39 4.42 7.36 <br />0.040 0.025 0.029 0.005 0.10 <br />7. Surface tlescnp8on (paved or unpaved) ......................................... <br />e. Fbw krgth. L ............................................................................. ft <br />9 Watercourse sbpe. s ................................................................ fl/ft <br />10. Avaralle velocity, V (fpure 11)........_ .............................. fl/s ~ <br />11. n = u(aeog u! Conrpule n ............................... hr o:oo <br />(~pnn~ le Rnw, segment <br />12. cross.em«ultki..rea•. ................................................. <br />17. wetted geometer. pw .............................................................. <br />tA. FlyOnfulic retlius.r=elpw Computer .................................. <br />15. Channel elope. s ...................................................................... <br />16. Menninp'e roughness [Dell. n.........._ ............................................ <br />17. V = (7.49 r'(2!i) e'11r1)yn CortrpWe V ............._............... <br />te. Fbw 1en11m. L...._ ........................................................................ <br />1g. n = ut3eoo h Comgrte n ............................... <br />zo watenVretl « wW rea Tc «n (atl0 n In steps e. 11. W tg)........ <br />0.33 <br />(210-V I-TR-SS, Second Ed., June 1986) D3 <br />