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~~ • <br />COLORADO YAMPA COAL COMPANY <br />STOCK PONDS Seplert8er 8 ,1 993 <br />HYDROLOGY INPUTS AND RESULTS <br />(25-YEAR, 24FpUR EVENT) <br />POND AREA RJ Tc RUNOFF PEAK DESIGN SPILLWAY SPILLWA VELOCITY DEPTH OF DEPTH OF FREEBOARD RIPRAP <br /> VOLUME DISGIARG OR BOTTOM SLOPE FLOW SPILLWAY <br /> (ec) (hre) (ec-R) (ch) E%IS71NG WIDTH (R) % h (h) (h) <br /> I O I O I O I O <br />51EC 151.0 78 0.380 6.8 46.8 D B 1 10 3.8 0.3 1.1 0.50 4 2.B YES YES <br />51ED 188.6 78 0.488 89 53.8 E B 3 4 5.0 8.3 O.BB 0.01 5.1 d.22 YES YES <br />51EE 710.8 78 0.568 10.0 55.7 O B 1 B 3.B 8.5 1.2 0.66 4.3 3.1 VES VES <br />B1A 12.5 78 0.108 O.B 7.5 D 8 1 10 2.1 4.4 0.39 0.2 4 3.61 NO YES <br />B1 188.0 78 0.521 7.5 43.9 D B 1 7 a7 7.2 1.08 0.62 4 2.81 YES YES <br />1 1 .8 3 <br />81 107 78 0.107 0.5 6.5 D B 1 10 2 4.1 0.38 0.1B 4 3.84 NO VES <br /> B0.5 78 0.524 3.1 17.3 8 1 10 2.7 .9 0.63 0.32 4 3.37 <br />UB Z7.0 78 0.138 1.1 8.4 D B 1 10 2 4.1 0.35 0.18 4 3.65 NO VES <br /> 1 <br />NC 102.8 7B 0.804 3.9D 20.24 D B 1 t7 2.8 8.5 0.68 0.35 4 3.31 NO YES <br /> 11 78 0.508 4.52 554 B 1 B 3.1 B.3 0.78 0.44 4 3.21 <br />CSPA 17.3 7B 0.148 0.78 7.82 D B 1 e 2.1 4.2 0.38 0.21 4 3.81 <br /> 1 B .4 .41 8 1 1 4 <br />1) Arw we tlBSenneted ham 1'. SOD' ecW map supplletl W CYVCC <br />2) Cove numbsa vAre supplied b/ CYVCC <br />3) 7m of oorlcaltreRon Mae determirgd uainp ^ 1'.500, eceM map wllh 25' contour inrorvel supplied W C1'VCC <br />4) RumR vduns en0 prk d'xierpe Mere tlelsrmlrrd ueirq SEDCAD+. (SEDCAD +conpulx pintoute bAow Ri o bble) <br />S) E - Exbtlnp SpAMay mrdpuntlan, D - DeNpnetl epllwy CoMpuntnn <br />e) OlrtrneW d ep8wsye rot requhhp modtlitatlm Mare meseured ham the careliad pond mope davekpetl M EPP entl Amocletee Inc. <br />7) O - C)1RSlcpe, I - Ir1vM <br />e) Vebcity end depth d Row tlelermirNtl ueinp Mannirq'a equason tar open channel Aow, N = .035 <br />B) PaM IoceEOn eurvays were sl4pfied by EEP Brltl Aesocetes <br />I, Jaen M. Rey e101e R®1 Nia Fydrobpy eurvnery wea prsPeretl untler my supervelan, wiRl curve <br />nrrrber irpN data er10 meFPk9 provitletl bl' C1'VCC. The nbmutlan peeanted herein a We erd <br />correct b itr bast d rtry knowtedpe erq irRarrle8m. <br />s 3 {^1 <br />274x7 <br />