Tom Yulsman and Brendon Bosworth have an excellent piece over at Climate Central looking at drought and water supply on my favorite river*. They capture what I think is one of the key elements in understanding what’s happening on the Colorado: the realization that, independent of the drought that has plagued the river for more …
With the mondo snow pack and good runoff forecast, Arizona may no longer need to leave some of its annual share of Colorado River water in Lake Mead, Shaun McKinnon reports: The CAP had been discussing a plan to forfeit as much as 80,000 acre-feet of its allocation this year to help keep water levels …
Continue reading ‘River Beat: AZ May Not Need to Leave Water in Mead’ »
UCSD economist Josh Zivin and colleagues found a correlation between water quality violations and bottled water sales in the US: [W]e find an increase in bottled water sales of 22 percent from violations due to microorganisms and 17 percent from violations due to elements and chemicals. What surprised me was the small size of the …
What a difference a wet, wet month in the Colorado Basin makes. In December, the long range forecasts for the big reservoirs at Lake Powell (upstream) and Lake Mead were flirting with trouble. Lake Mead’s levels for the end of the 2010-11 water year were forecast to drop to 1076.68 feet above sea level, close …
Continue reading ‘River Beat: What a Difference a Month Makes’ »
udpate: full column here (sub/ad req) When I first began seriously trying to sort out New Mexico’s place in the scheme of Colorado River water management, I kept banging unsuccessfully up against what seemed like a simple question: If long term drought or permanent climate change reduces the river’s flow, how would the shortage be …
Continue reading ‘Climate Change on the Colorado: The Devil In the Details’ »
When I was a boy, I built a river in the backyard of our family home in Upland, California. I would put the hose at one end, running slowly, and let the water course down through channels and lakes of my own devising, beneath a cluster of lemon trees. Eventually the water would spill over …
I was delighted by the National Science Teachers association recommendation of The Tree Rings’ Tale, especially this bit from science teacher Teri Cosentino: I was so inspired by the book that when a tree was felled on campus, we counted and measured the tree rings to see what happened during the tree’s life during the …
At the Dry Lake snotel station near Steamboat Springs in northern Colorado, there’s more than 4 feet of snow on the ground. By snow water content, that’s 32 percent above average for Jan. 7. Snow that melts there flows down into the Yampa River, which flows into the Green, which flows into the Colorado, which …
I’ve been watching Lake Mead rise remarkably as a result of last week’s storm that blew through Nevada before drenching the Virgin River watershed on the Arizona-Nevada-Utah border area. It looks like Mead will finish December at a surface elevation of about 1086.25 feet above sea level, 2 feet above the level forecast a month …
I’m certain this graph is of enormous importance in understanding long range water issues in the west. But I’m not entirely sure how. It’s single family home starts in the Phoenix (blue) and Las Vegas (red) metro areas over the last decade: What you see here is the housing bubble bursting. Adam Nagourney did a …