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<br />Historical Perspectives on Colorado Drought <br /> <br />l <br /> <br /> <br />PaI~Ct~Moltll,l"Me. <br />Shon-T_Otougtlt <br />,N".1.2003.""-I.,2003 <br /> <br />11 <br /> <br />Page <br /> <br />~. <br />~ <br />____.-.0 <br />==-r.::. <br />----- - <br />~ - " - - - - <br />. .. ... <br />..... ... .,. ... .1. ..... ... <br />.:. ",. }Io ...... .~. .:. .=. <br /> <br />Figure 7. Map Illustrating agricultural drought conditions (NOAA-NCOC 2003). <br /> <br /> <br />llydrologicaJ drouglll refers 10 deficiencies in surface and subsurface water <br />supplies. It is measured as streamtlow and as lake, reservoir, and <br />groundwater levels. There is a time lag between lack ofTain and less water in <br />streams, rivers. lakes. and reservoirs, so hydrological measurements are not <br />the earliest indicators of drought. When precipitation is reduced or deficient <br />over an extended period of time. this shortage will be reflected in declining <br />surface and subsurface water levels. <br /> <br /> <br />,.......~OoougitIt~1 <br />l..oo9T_IIl,.I.:~-'l~ <br /> <br /> <br /> <br /> <br />------- <br />------- <br />. .. ... <br />.. I- .. '. -'I. ... ... <br />- .. .. ... .. .. - <br />_ ... .- .,. ... ... - <br /> <br />Figure 8. Map of hydrological drought conditions (NOAA.NCOC 2003) <br /> <br /> <br />Socioeconomic dro/lglII occurs when physical water sh0l1age starts to affeet <br />people. indi..'idually and collectively. Or. in more abstract terms. most <br />HDR Engineering, Inc. <br />Printed on 30% post-consumer recycled conlent paper <br /> <br /> <br />