1 00:00:00,010 --> 00:00:04,060 How does a drought last? NASA Satellite are following rainfall 2 00:00:04,060 --> 00:00:08,100 and we've seen record rainfall across the mid-west and 3 00:00:08,100 --> 00:00:12,160 record droughts across California. But NASA Satellite data from GRACE are also 4 00:00:12,160 --> 00:00:16,260 able to track how much water is stored in surface reservoir's and in the ground water below. 5 00:00:16,260 --> 00:00:20,420 At this point California is about year behind on rainfall. 6 00:00:20,420 --> 00:00:24,640 Meaning that to make up for the lost water that we see as a measure of gravity, you'd 7 00:00:24,640 --> 00:00:28,650 have to fill the entire state knee deep with water. 8 00:00:28,650 --> 00:00:31,632 ( woosh )