have either one of these and not the other, and the reason for that is is that in wet years when youave lots of water, you can maybe recharge the aquifer. in dry years when you don't have a lot of surface water you can extract water from the ground-water system. so, there's kind of a sustainable quantity. the primary issue that cities, particularly in the southwest, are having to look at is the idea of sustainability. in other words how much water does it take to sustain a certain lifestyle a certain quality of life? narrator: maddock hopes to use his models to educate people about the effects of falling water tables and to help deter overpopulation of these areas in the future. dr. maddock: the research that we're doing on surface-water/ground-water systems is tied in to the management of a regional water supply which, in turn is connected to a state or country water supply, which, in turn, is connected into international issues involving water supply so that the things that we study in our area ultimately lead to producing water-management capabilities that are used in other places th

youave ace of mind om srt to finish. ve yr lative. miralax. the 415, 628 area code overlay begins.tarting february 21, 2015, if you have a 415 or 628 number you'll need to dial 1 plus the area code plus the phone number for all calls. even for calls within the same area code... you'll still need to dial 1 plus the area code plus the phone number... so when in doubt dial it out! for more information contact your service provider, visit the website at www.cpuc.ca.gov/415areacode >>george: a quick check on track for you we're watching the dublin interchange or accident has been reported in the westbound direction as one of interstate 580 are at 680 so far the sensors are shown and no delays but this is a potential hot spot our have the rest of your chapter come up in just a few minutes. >>darya:president obama is sending congress a four- trillion dollar budget that proposes raising taxes on wealthier americans and corporations. >>darya:it also proposes using the extra income to help families who have been hit hard in tough economic times. >>darya:the budget would ease tight budget con