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<br />TASK ORDER
<br />CHERRY CREEK PMP SUPPORTING ANALYSES
<br />OCTOBER 2002
<br />
<br />The following additional scientific data and analysis is needed to be include in the Draft Final Report for the
<br />"Site Specific Cherry Creek Probable Maximum Precipitation Study".
<br />
<br />TASK I
<br />Additional detailed storm analysis is needed for inclusion the A W A and CWCB study findings. The consultant
<br />will find storm and rain data for the following severe weather events and maximize and transpose the storms in
<br />the Cherry Creek Basin for analysis and include this analysis in the Final Report. The additional severe storm
<br />events that are needed are:
<br />. June 16 -17, 1965 Plumb Creek
<br />. Fort Collins - July 28, 1997
<br />. Pawnee Creek - July 29-30, 1997
<br />
<br />.
<br />
<br />Holly, Colorado - June 18,1965, and
<br />Frijole Creek - July 2,1981
<br />
<br />.
<br />
<br />TASK II
<br />Compute the low-level surface "sub-cloud" winds for direction and speed for the selected storm events for the
<br />Cherry Creek PMP technical review. The consultant will compute cloud layer wind direction and speed, cloud
<br />If\y~rlpr~~i.p.itetiWl, al'is, cloud layer axis, sub-cloud layer wind direction and speed, sub-c19,u9i p,r@pipit\lt,\OflP.is,
<br />al\qel~ytl!i,o~'litf.r~r\ 150 miles of inflow for the following storms '
<br />. Penrose, Colorado - June 3-4, 1921 . Plum Creek - June 16, 1965
<br />'r.' ~h Masonville, Colorado - September 10, 1938 . Falcon, Colorado - June 17, 1965
<br />\,Il\;i,lf:llrt;CQlh.ns - July 28,1997 . Holly, Colorado - JUll,eJ8,,1965,;w4. ;:;,:[,i
<br />\\';:1.'." Ji,oganCounty on Pawnee Creek - July 29- . Frijole Creek - July 2,i19~b: ii,. S ," ),; il:
<br />,',;,_~ {';:1..3Q~ L99,7~: ~'; .:,,<q:~i.; ,';",:~\.;"'" "'!()?111
<br />
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<br />
<br />TASK Ut.. ; i, ". : ': i '.'1;5, ",:.:
<br />Perfo!111 <I!Rve\iwil1ary PMF routing for the determination of the reservoir correlations using,th~ new PMP
<br />estiqJ.at~sl,\\"\Il.~&.: ,The analysis will assist in the sensitivity comparisons for the selected storm events and
<br />include the data and discussion of this analysis in the Pinal Report.
<br />
<br />'i' t'~ ~.~ ;<- L
<br />:rti~1\j1..Vi;lL h\~ \.' i .'~i'_,'l'.l: 1,":'':(\',,'''; !u iLL"
<br />E1'.llapdcof.\4.e;A WA's technical review ofthe Corp's and NWS PMP 1995 Study..:"" :::,,' ;i::..! I. :j,:,u,{
<br />;("ii,a);j:f:~!f!WHi:~n.,,,~d comparis.on of the A W A 2001-2 study approaches to the NWS's J~I~'~:1fl-5:~~1l9'yr'~,:..', .
<br />:;.:,)1)\~HPlp.l./ia,tW}1 of the withm and Without ramfall curves for the selected Colorado storms for the standard
<br />., ';'f:9~" t9P.~, fqO-, 500-, 1000-, and 5000- square miles design storms. , '\.1,:
<br />, c). Inc,qrporation of the additional storm evaluations and findings in Task I into the filial report.."
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<br />.\ ',~"I J~)),'L!~:l,}i:,'itl'" . :,;,':,i':>,,' 'I(L): ,'j>;l';" ,.~" "
<br />TASK v . .,;" 1 ,. , c' " ,
<br />p~ttl~'i'pki~!J)~;ddit\'6nal coordination meetings with the interested parties, state agencies,;Jidrt~der~1 ',:'; "
<br />r~presi::i1~~tiVb~'fud''expand the final report. ',1. . ',; ..d,
<br />,"1. ':",l!,' ,.1'.';,."
<br />
<br />/'(:'::~;j:)f2:~ligji~Hon ofNWS ~articipation on the technical review panel chores. . ,~Ii;~: ,:.'c::' .,',';"
<br />" . , . ~)',JI,ricl~SIOl) of the additional technical support and comments from the Technlcal~~vle~ J;>ariel,and
<br />:'I',"""'1~:':N~fi6ri~rWeather Service into the Pinal Report'" " ',,,'" ,1"
<br />llj,.;'1 .le L H; II 01.; .ll~. ~ '
<br />
<br />. ,; .",;', i ~ i_
<br />
<br />f,*~6st' ?~r ildditiOIlal data requested for the completion of the Cherry Creek PMP Study arid Final Report lias
<br />b~e~'2al~ui~\~9/~I'$42,000. ** ,','" : ,,:,~ :. ',' "
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<br />::,"\';:"/;:ij"y;;'ii.':t!; . , "',,,} I";'",',:~;!,'" f:'",; "
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