The stretch of the Rio Grande in Albuquerque where we worry most about flood risk is called the “Montaño Gap”, a couple of miles on the west side of the river in the center of town where a school, some homes, and businesses are located in lowlands with essentially no levee protection. There was an …
Continue reading ‘Flood risk is about where you build stuff’ »
Three interesting visuals for a Friday morning to help illustrate New Mexico’s improving water situation, with caveats. One For this first time since the federal Drought Monitor began operations in January 2000, New Mexico is completely free of drought or unusually dry conditions. Our map is clear: This is excellent news, as Olivier Uyttebrouck noted …
Continue reading ‘Some notes on New Mexico’s improving water situation’ »
In 1940, Los Angeles County had 250,000 acres of harvested cropland. By the end of World War II LA County was, by far, the most agriculturally productive county in California. In the most recent Census of Agriculture, conducted in 2012, acreage had declined to just 40,000 acres and LA County was but a minor contributor …
Yes, a good snowpack helped us this year in the Colorado River. But the numbers are clear – reductions in water use made a far larger contribution to the good news on the river this year. This week’s official Bureau of Reclamation declaration that we won’t have a 2018 Colorado River shortage got a lot …
Continue reading ‘On the Colorado, the lowest water use in 25 years’ »
From Sandra Postel and National Geographic’s Freshwater Initiative, the story of a collaboration among a dairy farmer, an irrigation tech company, and an environmental group to improve water efficiency in growing dairy forage crops and reduce the impact of dairy waste: A 2015 pilot of the system on a 40-acre (16.2-hectare) field of silage corn …
Continue reading ‘Collaboration to deal with thorny dairy water and waste problems’ »
Background here.
Lauren Steely, late of the Bren School, did a neat analysis a few days ago to help visualize Oroville Dam inflow data. She’s using R’s joyplot tool, which is all the rage these days as a new day to line up and visualize variability in datasets that have repeating patterns. Like, for example, the annual hydrograph on …
Continue reading ‘That time we built a dam in Glen Canyon’ »
Lawyers have the coolest language. Consider the doctrine of prior appropriation. “Beneficial use,” the drafters of the New Mexico constitution explained, “shall be the basis, the measure and the limit of the right to the use of water.” It felt like poetry the first time I heard the New Mexico state engineer roll it out …
Just 5 percent of New Mexico ranked this week as “abnormally dry” in the federal Drought Monitor. That is the least dry the state has been since the monitor began publishing its weekly drought condition reports in January 2000.
Annemarie Lewis did a great job of helping Amy McCoy and I talk about the governance of the Colorado River in this American Rivers podcast. My favorite part starts around the 19:00 when Annemarie asks both of us what “success” might look like. Next week, in Part II, we talk about solutions.