Science isn’t enough

Smart Mark Lubell on why a better scientific understanding of our groundwater foibles – even “perfect science” – isn’t enough: But there are many policy-makers and citizens who will take that perfect science (even when presented in a very simple manner) and flick it away like a bothersome mosquito because they don’t trust the scientists, …

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On “regulatory assurance” in the Sacramento Delta

Jeff Michael did a pithy job Thursday of untangling the snag of old fishing line that is “regulatory assurance”, the Endangered Species Act and the proposal to build giant tunnels beneath the Sacramento-San Joaquin Delta to get water from California’s wet north to its thirsty south with, it is hoped, minimal disruption to the delta …

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Checking the conventional wisdom on the Clean Water Act

The conventional wisdom about the US Clean Water Act (which I’ve always believed) is that it’s been a great success. Maybe not? On the fortieth anniversary of the Clean Water Act this paper reports the first quantitative assessment of the aggregate trends in water quality in the U.S. using a single standard over the years …

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Who needs water in the Colorado basin

In the past, I’ve used the Bureau of Reclamation’s Yuma Desalting Plant as a sort of benchmark for measuring who’s the most desperate for water in the Lower Colorado River Basin, and the level of that desperation. Tony Davis had an excellent look at the project this past week in the Arizona Daily Star, and …

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Two very different responses to climate change

Two very different responses to climate change: In London, England, local borough councils are utilizing land use regulations to stop Londoners from removing their front gardens. Nearly 6,000 miles away in Las Vegas, Nevada, in the United States, municipal authorities such as the Southern Nevada Water Authority are doing the exact opposite—offering monetary incentives for landowners to tear …

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736 gallons per person per day

Some months ago, I complained in the newspaper about water consumption in Palm Springs: Today … customers of the Desert Water Agency, which serves Palm Springs, consume an average of 540 gallons of water per person per day. Having just visited Palm Springs on a desert vacation, I had that number in mind last week …

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On the economic benefits of irrigation

The greatest beneficiaries of the Colorado River’s bounty, in terms of irrigation water for agriculture, are at the bottom end of the system – in California’s Imperial Valley and across the border in Yuma County. But the community payoff for all that liquid wealth seems limited. From today’s Bureau of Labor Statistics monthly unemployment report: …

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Various ways of running out of water

In Cloverdale, Calif., (in Sonoma County north of San Francisco), the local municipal water utility is ratcheting down on outdoor watering: Peak demand on hot days in May and June has come close to maxing out the system’s capacity to deliver to Cloverdale’s population of 8,629. “We’re not in a crisis mode at the moment. …

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