It’s looking increasingly likely that some of this year’s “bonus water”, extra releases from Glen Canyon Dam to bolster supplies in Lake Mead outside Las Vegas, is evaporating with our dwindling Rocky Mountain snowpack. The folks at the Bureau of Reclamation have been careful since the beginning in telling us that the bonus water was …
Continue reading ‘The impact of our disappearing snowpack on Lake Mead’ »
“Over this bridge drought refugees are crossing the Colorado River into California.” – Dorothea Lange, 1935 One more great bit of American history as I get ready to head off to Yuma. I love this picture. From the Library of Congress’s remarkable collection of Dorothea Lange’s work in the American Desert during the Depression.
I stumbled this evening across this 2009 piece by the Public Policy Institute of California which seems quite timely: The Myth The popular press often propagates the myth that California is running out of water. As a recent example: “Have you seen Lake Oroville lately? If so, you know California is running out of water” …
Continue reading ‘The problem with the “running out of water” rhetoric’ »
Getting ready for a reporting trip next week to Yuma, I’ve had occasion to revisit a recent favorite Colorado River water book, Robert Sauder’s The Yuma Reclamation Project. Yuma is the last thing the Colorado River sees as it leaves the United States and disappears into the agricultural diversion canals of the Mexicali Valley, there …
David Victor on the need for better inclusion of social science in the work of the Intergovernmental Panel on Climate Change: The IPCC must overhaul how it engages with the social sciences in particular…. Fields such as sociology, political science and anthropology are central to understanding how people and societies comprehend and respond to environmental changes, …
Continue reading ‘On climate, a call for more social science’ »
update: The preliminary human-in-the-loop forecast is substantially better than the automated one, at 55 percent. But still terrible. previously: The preliminary Rio Grande forecast for April 1 is just 33 percent of the 1981-2000 average, a dramatic reduction since the March 1 forecast that shows just how abysmally warm and dry the month of March …
Continue reading ‘Preliminary Rio Grande runoff: 55 percent through Central New Mexico’ »
Water markets – willing buyers and willing sellers, to get water moved from places with a lot to places that need it really bad – are a hot topic of conversation right now, what with California’s big drought and all. Brian Devine at the University of Colorado has a nice post up this week explaining …
Continue reading ‘Some difficulties in setting up water markets’ »
The April-July runoff forecast into Lake Powell, on the Arizona-Utah border, is just 52 percent of the long term mean, according to new numbers out today from the Colorado Basin River Forecast Center. That is roughly 1.3 million acre feet less water flowing into Lake Powell than the forecast of just a month ago, the …
Continue reading ‘Colorado River Basin forecast: where’d that 1.3 million acre feet go?’ »
Yesterday’s executive order from California Gov. Jerry Brown (pdf here) illustrates a crucial issue about water governance, the issue of the scale at which we manage our water. The headline news from Brown’s announcement – “First Ever Statewide Mandatory Water Reductions.” But what does “mandatory” mean here? Here’s the explanation from Craig Miller, who’s covering California …
Continue reading ‘California drought: Jerry Brown doesn’t have a knob to turn’ »
Craig Miller at KQED has a useful roundup of what sort of shortfalls California water users might see this summer as a result of drought: Ag: “More than 400,000 acres of farmland were fallowed last year because of scarce water. Credible sources have estimated that figure could double this year.” That’s in the neighborhood of …
Continue reading ‘Where will California’s water shortfalls hit?’ »