in flow your getting more inflows. the system is sincetive to climate. the second important point ere is, this whole project. assessing the risk, assuming we operate the system the . w ulnabre we ot unr ngitions alough iim atn knowbut w vuerle would be iwe halebi o an

thay we nd hat' wq. and t rsing mo important tan science a that politics. xt slide. what shouldn'be done? don't assu future limate will look like the past. actually'll say ione ore time n the conclusion. donot justify acons sing climate change without the science to sun thr tifoth ons. m going o okher big e be'i e om so an'ckut e govern poptwo e surfacesi caforniae e prt of the uuifat wais imatgean iblempacton torag ople anodointo elieve

ist oos to ew mageut' p il cchgea reatting opthe ate foru poweut toag guto bew ucar power ants there'eonomicbic l le, tgshat ha nt sper climatch iaew

ificiofor oi mebunot necsa an gumefdg ertain large investmentad buig things wa te out bld tuorte wro reon n't say anore about that. let me cclude. manager's d planners, city and state water manager's ca loer asme thewater conditions and clime change wi look ike thpast. th how we designedthe rules by which we oerate. r wter resoces are sensitive to climate. but our systems are snsitive to the wmnage h w d. wehave t hink not just

thk th's a problem. . manager's must use current tools balso look at future

risk policy manager's have the opportunity to o this. we lready maner or variability and risk. we build homes arthque s khow igr whhe ahq ll b weger riskand ools for oing at nau doinnoue n anning or atual on he und ion. do nto tkem he gr aion.ultimaly t i w dend our lity t ged o the is adoan implemans and is is te ace is, cause as mas e k e esrises and thin wwt knowi va awe oo abto be

innove thou very much. [applause] thiis main sreet on aone t five hundred ye d. missppi river thisy slide u ery u 'ring tfr ons aneppl with mhoatwll yost e qucmmiwike akaeepes nokingatwte ger'olscma angeoring inut temars 've sen are ininvestmentwat voinrdus inth.i nrom990 o esweedr ag cageapa of.

ri queson here. >>i i'm sow workolsions dungg emissi we haverio we're also ery a

targthtate 80 ercen reio80ernt 05ven nedtreduce grousegases igficaly angthire resh betwe au and ohoe do hinit going bness t oclel to imit the ablute mntowr ha edor t tart ttn placpocies - such s nt easen at - os i a gneral smeg likehurthert? >>plf houts ut actiahlevel nd ose soroo wetughtbouuthere intereing theng thities r climatectr

caaign somethlike0cipati ghte nel uose arhe astpvideare parthat campaign e munal wat distct en jrohson ash rstuptatf systemp ini's ae ortu fotep n a os fre anta a lley, ki lol vilits thcimatcngn ose. bf osas ose c v ex wrepes he decidetogetol l eicmate chae sues. ibn tyipudd

thugh the avi igo lkaway wth. i oumor prece ie 'socear toeati's tgu you nt o lokeoclt'nt clear - hearing he pieces aon omnd rt l demandplanning for ar utilities shld not ig hial also. site s te on yu can d, i st owhatseattle

ag abt metropolita se. eri don't know how your plan arsoble lan of th. so im nd athen u'inthe y yohvet asast poibleudon'bud,da, l you do anas. i'm t ure hoit s geth me co. i wond i ld em ece hatu e eoe too. nhpaeoate,par e hing to rr it we'repeing isscngn thcldeo thg concernsia

n atbd mentio0thcen enyu look at ed ov ceur asroxy inca ccurd heyae probclo high thlg-avege. thers a real rstandwha stor t capadowat ot jufrohe rualecit's ohorununat ca ese ntul fctuaon wi atowfor me ds. on't nowtt i'somp buhn caiacon s,

two odof exy lima naas ifora nd nevada - fiore y wd ot ree y wart hink ogy, ihink [inaudleo otetot e modeein aell he s he range of natural variability in precipiti evthoughtemperatus gi remarkay. idently that did ot get through. but that's what happenthe

aractezation f precipitation isnot nlike today. not rain vers sno but he totawater vole s sill looking a llike the mer climate. >> let me ta acracat this. 's a great questi. its the arrier that a lot o water age face. on the,pa leo cmate, side e te past will e me deal with floods ad rough properly eal witthem if we had abetter since of th rom rin i he

1920s we wou probly make different assumptions onthe corado river maybe wewould not but was informatiow did not have about climattat wuld have changed potentiay a desion th watemanag's and liticians had. going nto he few uh-uhture, mager's and planrs haa lot of tools for dealing with these kinds of variabilities thatwe aveto fac paicarly, whatwe're suggesting isnot to do anything different but include abroader rao future climas in our plan. that maybe degninothing, if o buiing from scratch ffertly tn if there water climate change. mntto ask aurine,she

deribethe - well, what want to know is are they vaing the desali, no one f hem ie seen account for rising sea level example. it might be onfor some noall ofthem. are they e evaluated derhigher teature scenarios. e thyield numbers being evaluated that. are the ones ur existing scenars d i'd like to kw thatand if te aswer is, no, it ought tbe. it will eect the enoc decisis made and ultimately investments in part frastructure

we may choose not to d many thgs differently, nd accept higher level of risk, but i would argue that i we're smart we will do things diffy to reduce xposure for the future just ecause it caout yesterday. the department of ater resources has done a nmberof runs wh reservoirs in nflows in te sierraarea anit's 0 percenof nflows likely from toy. the worst case i reduio of 19 ercent abig reduction. upstreama, fsom, yesterday it was ike t billion dar to build th eserir a

that's great examplefor water managers to tke wha ismns. it's clearly amistakes ild something thawater magers assume theycan pture mighliterally bege sel cades. >> o the nt t we can't assume tt the pst islike e future,um...you mentioned hydrauc models. i'm wonderg if there's any practical models and i'll ake the point wi insance industries when hey s rate are required tusa essage that factors the past and not the ture. theres the ew modelthat he insurance industrwantsto use and they've all been modified since-katrina ad they have

three mols but ty ave now vised tir catastrophe model to iorporate climate sience anof course, iurance mpanies want to be able t go by hose models nd i'm wondering if suchpractical tools are being dvelopefr watemanageme. >> llthe sht nswer i absolutely, ye the umm itatn ri in a thecn l. a lt ftis- ihpeingswn tmein ab s kiwi or

spngs uesanhe inat lasne i foia horanswer is abso. but arty gean wstin them w ticalrlyoode gete ts tenhadriv andesn aknto erspecve imatanut challeng tedeth sinet hon counls cause opopulatgrth anten imes tr eing onds tat e trough th feraftd d nd sg rtai

de critia iery compcawhen you o in cooan tsfferent for le apposcifi >>e pemit the ls.are tyodels aveftol probm oulague,inot tcircula t d ts i an ar

ataaiothis onal e ad l that stl f t r ce ight w.th my sweratne. i atou an count lyer, bu dot kw if iill e roit today. >>s, dctor bothmntned ea

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ospectimat triodas ce intes t sed,ai thmute sittion i' iaw vialitacor activi hu meio i iwor iscuing. just time forfemre s. >> this is oa want topo shiyu ionet reite, especially ten ears bae