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?’ »
California farmers by now have a pretty clear picture of what their water supply situation is going to be this year, whether it’s reservoir and irrigation system surface delivery, or groundwater pumping. The U.S. Department of Agriculture today released projected acreage for the state’s major field crops (pdf) that reflects farmers’ resulting choices: corn: 430,000 …
A year ago, I wrote a piece urging calm in the face of California’s extreme drought: The thing to remember – and this’ll help you get through the tough year ahead – is that drought is no one big thing. It’s a series of little things – one water user, one water system at a time. …
Continue reading ‘Keep breathing, California. You can do this.’ »
According to the U.S. Bureau of Reclamation, warm February weather meant the earliest runoff in the 40-plus year history of the San Juan-Chama Project, which brings water from southern Colorado to the Rio Grande Valley of New Mexico. But “early” does not translate to “a lot of water”. San Juan-Chama Project contractors, the largest of …
Continue reading ‘San Juan-Chama forecast: looks like a second year of shortfall’ »
Matt Weiser, who has ably served so many of us as a guide to the complexities of California water, is leaving the Sacramento Bee.
A guest post of sorts* from a group of prominent economists here in the western United States questioning the findings in a widely quoted report (pdf here) by a group from Arizona State about the potential economic impact if the Colorado River went dry: *********** A January 14th article in the Wall Street Journal reported …
Continue reading ‘Exaggerated Impacts of Unrealistic Water Shortages’ »
As I empty the last of last month’s big snowstorm from my rain barrels onto the garden, I notice the water comes out more and more slowly. It’s a reminder of why power production drops as supply in our big reservoirs declines. Some tricky tradeoffs here:
Resilience is a system’s ability to absorb a shock and still retain its basic structure and function. Here, in one complicated table, is an example of the sort of institutional plumbing valves we need to build to increase resilience in the face of drought. It’s a table accounting for the Metropolitan Water District of Southern …
Continue reading ‘How Southern California quietly doubled its 2014 supply of Colorado River water’ »