Brett Walton had a great bit of business in yesterday’s Circle of Blue story on 2019’s remarkable drop in Colorado River Lower Basin water use: The last time water consumption from the river was that low was in 1986, the year after an enormous canal in Arizona opened that allowed the state to lay claim …
Continue reading ‘March 1985: when everything on the Colorado River changed’ »
My thanks to a friend who recently pointed me, as we discussed the appropriate ways to account for Arizona’s use of tributary Colorado River water, to the above bit of history. In the official transcript of a 1946 congressional hearing, which was then gleefully repeated down through the years (you can see it on p. …
Continue reading ‘“in tribute to a million acre feet” – Herbert Hoover and Arizona’s Gila water’ »
Old John Fleck would have happily explained to you why this from Bruce Babbitt is a terrible idea: Damming the Gila River is a vampire proposal that would suck the life out of Southern New Mexico’s most treasured wild and scenic river. Gov. Michelle Lujan Grisham wants to kill the project. Both of New Mexico’s …
Continue reading ‘Taking New Mexico’s Gila water from the San Juan?’ »
Happy to report that my friend Sharon Megdal, head of the University of Arizona Water Resources Research Center and a member of the Central Arizona Water Conservation District Board, has been honored with the University Council on Water Resources Warren A. Hall Medal. Sharon’s a wonderful example (and role model for me as a new …
Public radio station KJZZ looks at Science Be Dammed, the new book by Eric Kuhn and John Fleck on the overallocation of the Colorado River.
If past trends in greater Phoenix – agricultural land transitioning to urban – the area is on track to groundwater “safe yield”, according to new research by an Arizona State University team: Under (business as usual) conditions where population is expected to increase and agricultural activities to gradually decrease, our results indicate a reduction in …
If we’re not allowed to divert some of this water, then Arizona continues to get it all, and they become wealthier and wealthier as time goes by. That’s Darr Shannon, head of the government entity hoping to build a diversion to take water out of New Mexico’s bits of the Gila River. From a fascinating …
Continue reading ‘How resentment of Arizona drives New Mexico water policy’ »
If you want to dam rivers, as we were inclined across much of the 20th century, the location of the current Parker Dam on the Lower Colorado River makes sense – a narrow gap just downstream from the confluence of the Colorado and Bill Williams rivers on the Arizona-California border. I paid a visit last …
Continue reading ‘How Parker Dam might have been the Colorado River’s first’ »
In the wake of Arizona’s difficulties in coming to terms with the future of central Arizona agriculture as it sorted out its approach to reducing Colorado River water use under the Drought Contingency Plan, the latest Census of Agriculture data is fascinating. The decline continues, but only just barely. The data within this data, broken …
Continue reading ‘Central Arizona ag’s decline continues, but Pinal County is up’ »
I deeply misunderstood central Arizona’s readiness to respond to declining Colorado River supplies. Because I thought Arizona had a plan. In fact, Arizona did have a plan, a carefully crafted priority system that provided some users with deeply subsidized water in the short run, with the understanding that they would be the first to have …
Continue reading ‘How Arizona abandoned its plan to reduce its Colorado River water use’ »