Environment & Energy
Related: About this forumColorado River Water Managers - "We Will Never Be Out Of The Woods, We Are In The Woods Forever"
EDIT
Many water managers like me are struggling at not panicking, said Mark Harris, general manager of the Grand Valley Water Users Association in Grand Junction, Colorado. In his farm cap and jeans, Harris is a no-nonsense type, not given to hyperbole. This year, though, some junior water users on the Yampa River, a tributary to the Colorado, were told they would not get their water because others had priority, the first time that has ever happened, and late-season water flows near Grand Junction were near crisis levels. The crunch is here, Harris said. Its here, and it will stay here. We will never be out of the woods, we are in the woods forever.
Never has the question of what will the winter be like? loomed larger than it does this year in the Colorado River Basin. If it is anything like last year (when about two-thirds of the usual snow fell) and many other low snow years since 2000, it will trigger the first emergency declaration in the basin, which could force states to deal with cutbacks in the water they are appropriated. And even if it is a big snow year, it will likely only delay what now seems inevitable.
The last time Lake Mead was full was 1983. Since then it has slowly declined. It is now 40 percent full: 1,082 feet above sea level. It may never be full again, experts say. If it drops 7 feet, to 1,075 feet, it will trigger the first Tier 1 water cutbacks. A flyover reveals a giant white ring all the way around the lakes 112-mile-long perimeter, dramatically showing how far water levels have dropped.
There are three levels of cutbacks. When Lake Mead falls to 1,050 feet, a Tier 2 crisis occurs, and Tier 3 at 1,025. At each level, states in the lower basin have to give up more of their water. Lake Mead would have already hit 1,075 feet and a First Tier declaration if it werent for the fact that farmers, ranchers, and many others have been working to avoid an emergency by keeping more water in the river through conservation efforts. For example, in 2017, state, federal, municipal, and private entities funded the purchase of 40,000 acre-feet from the Gila River Indian Community to be left in Lake Mead in perpetuity as part of a system conservation agreement. Last August, the U.S. Bureau of Reclamation issued a report on the water future of the region. The agencys predictions were sobering. By May of this year, the bureau forecast the level will dip just below 1,075 feet, and at the beginning of 2020, the level is expected to drop to 1,070. By the summer of 2020, the prediction is 1,050 feet, almost Tier 2. If these predictions come true, users will have to begin giving up their water allotments, starting with the most junior.
EDIT
https://e360.yale.edu/features/on-the-water-starved-colorado-river-drought-is-the-new-normal
mountain grammy
(26,648 posts)hatrack
(59,592 posts). . . . with at least two months to go before any appreciable increase in runoff.
http://www.lakepowell.water-data.com/
2naSalit
(86,775 posts)accumulated snowpack up here so far in Montana.