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<br />.' S"T {q-c OF COLOi{ADO <br /> <br />RICHARD D. tAMM. Governor <br /> <br />,\ <br />;:) <br />"'i\ <br />~c f a <br />; ) .-~\ <br />J ~,-'> l' Division of Minos <br />, , ,l. ~ Oil and Gas Co(\s~rv1ltion Commissio<1 <br />}~<' ~~'i''''' <br />/ ' ,F, ',. Diui,ion 0' P"k, & Ou'"oo, n'''''''on <br />/;~ ~ <' -: '..." ':;:;<':\';.I-~~ Soil Conserv;:,tion BOiJrd <br />/.,< "." {:-'-'~-''''.~. ,;~.---,.,~":~,,w'-:jf\-\;./:~ '" water. Con;-.r\:.:ttion BOllrd <br />~::.~,.. {;" :"tJ!Ji~J+ ~.:.~'":'- Division of ~'.J.'t<.1r R€lsourcGs <br />'-~- ____..&0._ .....-".2.. ~. _.';:v'":~..-....-~ O!vjSlon of INildli'fe <br />_____~~.5:-::.::-~.... . <br /> <br />Geologic;.! Survey <br /> <br />DEI-''ARTMENT OF NATURAL RZSOURCES <br /> <br />Board of Lund Commls~jO"-HHS <br />Mined Land Hcclilmati0'1 <br /> <br />D/W!D H. GETCHES, Executive Director <br />1313 Sherm'::':l S~.. Room 718, Denver, Colorado 80203 866-3311 <br /> <br />'//r.'(' <br />L?C<:"',C <br /> <br />~~-11-9 RAN 0 U_H <br /> <br />lye <br />R.~. <br /> <br />TO: <br /> <br />Governor R'chard D. Lanm <br /> <br /> <br />-- <br /> <br />FROM: <br /> <br />Ronald W, Cattany. DNR <br />Pa t Byrne, DODES <br /> <br />DA1E: <br /> <br />Hay 10, 1984 <br />SUI3JEC1: SPRING FLOODING CONDITIONS <br /> <br />On Thursday, r'lay 9, 1984 rcpresentatives of thp. Division of Disaster <br />Emergency $C!rvices, Colorado lrIutcr Conservai:.ion !loan1, Nat.ional Weather <br />Service, U.S. Soil Conservation Service and the U.S. Mmy Corps of <br />Engineers met to discuss the potent'u.1 flood threat in Colorado. In <br />general, snowpack in the state increased 22 percent 'n Aprll to a 1(0.':1 <br />149 percent of average. Th's level 'S 113 percent of last yea;-. <br />Reservoir storage 's 146 pcrcent of average or 105 percent of Aprll of <br />last year. <br /> <br />The 3D-day forecast has temp~ratures below normal and precipitation <br />above normal 'n the state. The 9 ay forecast has precipitation below <br />normal stateH'de and temperatures ': e' ow normal east of the continental <br />divide and above normal west of the con nental divide, <br /> <br />Spring flood.ing 's directly relat~, to temperature. precipitation <br />and the rate of run-off. Single facfors seldom cause floods. The <br />, nteraction of a 11 three factors determ' nes the magnitude of flood' ng. <br />It is too early to 'dentHy the relative proportions of all factors to <br />determine the severity of flooding. Only areas of special interest can <br />be 'dentHied. <br /> <br />Based on the May 1, 1984 readIngs on snowpack and streamflow. the <br />group ranked the river basins according to low, medium and high flood <br />threat. A low flood threat implied that there would be a relatively 10\.1 <br />probability of out-of-bank conditions. A high flood threat implies that <br />. ." <br /> <br />., <br />