Entries by Brett Walton

Federal Water Tap, May 21: Colorado River Management

As part of its ongoing study of the Colorado River Basin, the Bureau of Reclamation released a technical report that uses six growth scenarios to quantify water demands in 2060. From a 2015 baseline demand of 15.8 cubic kilometers (12.8 million acre-feet), water use from the Colorado increases between 1.2 cubic km (1.0 MAF) and […]

Water Shortages Trickle Down the Rio Grande

Groundwater is a proven crutch for dry times, but how much weight can it hold? Photo © Brett Walton / Circle of Blue Colorado’s San Luis Valley is pinched by two mountain ranges, the San Juan peaks to the west and the Sangre de Cristo, seen here, to the east. The Rio Grande flows through […]

Endangered Rivers and Success Stories

Leavening the imperiled areas from the latest “Endangered Rivers” report with a few bright spots. On Tuesday, the U.S. conservation group American Rivers released its annual list of the nation’s most endangered rivers. For nearly three decades, the organization has identified 10 significant waterways each year that face a crucial development, regulatory, or legal decision. […]

Federal Water Tap, May 14: Chemical Contaminants

The Environmental Protection Agency keeps a list of unregulated contaminants from which it pulls chemicals for regulation under the Safe Drinking Water Act. The agency is seeking nominations for additions to the fourth version of the Contaminant Candidate List. Submissions are due by June 22. The third list includes 92 chemical contaminants and 12 microbial […]

Parsing the Water Pricing Data

Which cities have the highest rates? And why? Yesterday, Circle of Blue published the 2012 update to our annual water pricing survey. I want to go into greater detail on a few things that did not make it into the story. The survey does not measure an average bill. For that, we would take the […]

The Price of Water 2012: 18 Percent Rise Since 2010, 7 Percent Over Last Year in 30 Major U.S. Cities

Rates have increased in many cities, but local conditions dictate by how much and how the increase is distributed. Chicago prices are up nearly 25 percent, while Los Angeles is down by 9 percent.

Drugs in the Water (And Ways to Prevent that from Happening)

Last month’s national drug takeback day was more popular than ever. Antibiotic-resistant genetics have been found in California wetlands. FDA seeks voluntary disclosure of antibiotics in animal feed.

Himalayan Landslide Floods

At least 17 people are dead in the latest disaster in the landslide-prone region. Over the weekend, a flash flood in northwestern Nepal killed at least 17 people, injured others, and caused an unknown amount of property damage. According to experts at the International Center for Integrated Mountain Development, a Nepal-based research organization, the flood […]

Federal Water Tap, May 7: Fracking Fracas

The Proposal Under a rule the Obama administration submitted for review on Friday, energy companies using hydraulic fracturing to drill for oil and gas on public lands would be required to disclose the chemicals they use in the process, the New York Times reports. However, owing to industry lobbying, companies will be allowed to wait […]

Film Review: Last Call at the Oasis

A documentary film on the world’s water crisis opens this weekend.

In These Dry Times, Groundwater Rescues New Mexico Farmers

Surface water allocations last year were 10 percent of normal, but record levels of groundwater pumping buoyed production in the state’s top agricultural region. Photo courtesy of Daylillyfan via Flickr Creative Commons. Because of years of drought and consecutive La Niña-influenced dry winters, Elephant Butte reservoir on the Rio Grande in southern New Mexico is […]

Forecasting Western U.S. Water Supply in 2012: La Niña Again Delivers a Wet North and a Dry South

As water availability data starts coming in, this year’s water allocations and the potential consequences for irrigation, hydropower, wildfires, and flooding are being assessed — La Niña weather patterns have returned this year, but water supply conditions generally are not as extreme as they were 2011.