Seventeen of the last 20 years have had below-average runoff at Otowi (north-central New Mexico) on the Rio Grande: That’s from the U.S. Bureau of Reclamation’s 2015 Annual Operating Plan presentation, done in Albuquerque last week. “Average” is the 1895-2014 mean.
Sorry, that was a clickbait headline. Let me walk it back: Odds shifted slightly toward a wetter Southwest monsoon this summer! The usual forecast explainer: this shifts the odds from the climatological one-in-three-years-is-wet statistical binning to a 33-40 percent chance of wet in the light green area, upwards of 40 percent in the dark …
Darren Ficklin at Indiana University has a new paper exploring trends in drought in the United States which notes that the trends are not universal: [F]our regions of increasing (upper Midwest, Louisiana, southeastern United States (US), and western US) and decreasing (New England, Pacific Northwest, upper Great Plains, and Ohio River Valley) drought trends…. But …
I know, I know, beware the romanticism of desert agriculture, but these trees are such a nostalgic throwback to my childhood. I grew up on the fringe of the Los Angeles suburbs. Trips to the desert were part of my childhood. And date palms along the highway were an iconic image of those jaunts. The …
More than a million acre feet of water disappeared from Lake Powell in the latest U.S. Bureau of Reclamation operational forecast for the 2015 water year, translating to a 13 foot drop in the big Colorado River reservoir’s projected end-of-September elevation in this month’s forecast compared to just a month ago. The change in this …
Continue reading ‘Lake Powell takes a big hit in latest Bureau forecast’ »
Vanessa Barchfield: University of Arizona geoscientist Karl Flessa said Tuesday that the eight-week flooding helped to germinate and establish cottonwoods and willows that will live for up to 50 years, demonstrating that even a small amount of water can have long-lasting effects on an ecosystem. But, Flessa said, the impact of the water varied. “In …
Continue reading ‘Karl Flessa on the Colorado River pulse flow, one year on’ »
Almonds get all the attention, but hay, that most pedestrian of crops, still covers more acres of California farmland. But less than it used to. In the drought of 2015, California farmers are planning to plant and maintain past plantings of 1.23 million acres of hay, according to new USDA data published last week. That’s …
This cemetery, on the “banks” of the All-American Canal overlooking Bard on the California-Arizona desert, has no grass: Immediately behind me as I stood to take this picture last week was the All-American Canal, an artificial river built in the 1930s to carry Colorado River water to the Imperial Valley. A lot of water. The …
update, June 24, 2015: Since this post was written in April 2015, a wet spring has reduced the chance of a “shortage” in 2016. It now appears 2017 is the earliest this could happen. The situation described in rest of the post, detailing what happens when a “shortage” is declared, remains the same. previously tl;dr …
Continue reading ‘1,075: What a Lake Mead “shortage” would mean in practice’ »
Some interesting stats from Charles Fishman (whose book The Big Thirst is a timely read): Looking at California water stats for Bloomberg TV appearance. A stunner: Calif farms use less water today (23.1 bgd) than in 1970 (33 bgd) — Charles Fishman (@cfishman) April 13, 2015 2/ In 45 years, California farmers have cut water …