In the western United States, water use and water rights questions associated with Native American communities are a major factor in the region’s future. Under federal law, these communities are entitled to substantial but often unquantified amounts of water. Planning for the future often gets tangled up in these questions. For example: Not all tribes …
Given the time scales associated with climate change and societal response, it seems perhaps best to wait to consume the new IPCC Special Report Managing the Risks of Extreme Events and Disasters to Advance Climate Change Adaptation (SREX) until it’s actually done. This seems especially true given its stated purpose: The assessment concerns the interaction of climatic, environmental, and human …
Back in the 1950s, the Colorado River, at least a bit of it, used to regularly reach the “Southern International Boundary” – the river bed near San Luis where it stops being the US-Mexico border and travels solely in Mexico. Even during the driest bits, when Lake Mead was dropping during the late ’50s, at …
I first noticed it while I was out in the mountains of northern New Mexico back in the mid-1990s with Karl Karlstrom, a University of New Mexico geologist. I had tagged along on a summer field camp mapping exercise for a feature I was doing, and spent a good part of the day shadowing Karl …
In his richly detailed The Fall and Rise of the Wetlands of California’s Great Central Valley, Philip Garone explains a bit about the origin of wildlife refuges that I never knew: During the early decades of the twentieth century, much of the Sacramento Valley was converted to profitable rice production. However, because the valley’s natural …
Continue reading ‘The economic origins of wildlife refuges’ »
I’m thinkin’ you’ll want to head out to your favorite local bookstore and buy Bill deBuys’ A Great Aridness. It’s full of stuff like this, on the dry winter of 2001-02, when a bear came out of hibernation early because it was so warm and ransacked deBuys’ yard in search of something to eat: That …
Because it’s hard to resist the word “megadrought” – or, frankly, the concept: Tree rings from the headwaters of the Rio Grande show a 50-year drought from 122 to 172 AD, suggesting that “megadroughts” may be a recurring feature of the region’s climate, according to new research by a University of Arizona team. Scientists have …
Thrown on driveways this morning, my effort to explain why I think the endangered species act process, as it relates to the silver minnow on the Rio Grande, is broken: If you believe those who argue we are overusing water in the Middle Rio Grande Valley and headed for a crash (and there’s good data …
Continue reading ‘Stuff I wrote elsewhere: the endangered species act process brokenness’ »
Those pesky tree ring scientists are at it again, spoiling a perfectly good party. Stephen Gray and colleagues have taken a dig into runoff over the last 1,000 years on three major Colorado River tributaries, adding a new level of granular detail to something that already seemed apparent: Runoff during the 20th century, when we …
Faster Internet: (I don’t really hate Colorado. I’m just enjoying playing with Data Explorer.)