What does it mean to have “drought” in Yuma?

In my endless puzzling over the meanings we attach to the word “drought”, there is this, from yesterday’s Climate Prediction Center seasonal drought outlook: What does it mean to talk about “drought” in places like Yuma or the Imperial Valley that average less than 4 inches (10 cm) of rain a year, and that get …

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On the Colorado River, the environment is the junior user

Members of the Colorado River Research Group, scholars who study the basin, have a useful new report out today (pdf here) urging a more unified approach to the currently fragmented environmental management initiatives on the Colorado River. It describes “an incomplete patchwork of largely uncoordinated efforts, existing in some cases to facilitate compliance with environmental …

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Awaiting our May miracle in the Colorado River Basin

It was 72F (22C) in Albuquerque yesterday, a record, and our decent snowpack is already starting to melt out. It’s early for that. And February (see PRISM map at right) has been dry, which hasn’t helped. In the Upper Colorado River Basin, snowpack measured across all the river’s main tributary systems above Lake Powell (the …

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Sorting out the Salton Sea mess

I joke that I kept trying to leave the Salton Sea out of my book, because it’s such a hairy problem that in threatened to derail me in so many ways. Of course I failed, because the Sea is a critical piece of solving the distributional problems of scarce Colorado River water. Agricultural reductions in …

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On Bard and the language of water “markets” and “incentives”

The Pacific Institute and others have published a useful new study on “Incentive-based Instruments for Freshwater Management” which raises some interesting issues about the language we use to describe water policy instruments. Deep in Abrahm Lustgarten’s excellent new piece about water markets in the West is this description of the arrangement by which the Metropolitan …

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Odds favor wet late winter, spring across Colorado River Basin

With the current snowpack in the Colorado Basin watersheds above Lake Powell at 93 percent of average (source: CBRFC), we’re entering the critical time for the 2015-16 water year on the Colorado River. Today’s forecast from the federal government’s Climate Prediction Center has the odds tipped toward a wet later winter and spring, but not …

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Odds now favor a Lower Colorado River Basin shortage declaration in 2018

The latest U.S. Bureau of Reclamation two-year Colorado River operational forecast, released last week, projects that Lake Mead will end December 2017 at elevation 1,074.2 feet above sea level, about 10 inches below the level that would trigger a first ever shortage declaration on the Lower Colorado River. Here’s the legal mumbo-jumbo: In years when …

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