Government Scientists Confirm Las Vegas Water Withdrawal Project Will Be Epic Disaster
The U.S. Bureau of Land Management (BLM) today released its long-anticipated final environmental impact statement for the pipeline right-of-way for the Southern Nevada Water Authority’s “groundwater development project.” The project plans to siphon more than 37.1 billion gallons of groundwater per year from at least four valleys in central Nevada and pumping it 300 miles to the Las Vegas Valley.
“The federal government’s own scientists are confirming this Las Vegas water project would be an epic environmental disaster,” said Rob Mrowka, a Nevada-based ecologist with the Center for Biological Diversity. “It’s really no exaggeration to say that the natural, cultural and social heritage of central Nevada is at grave risk from this project.”
The impact statement discloses that more than 137,000 acres of wildlife habitat will be permanently destroyed or changed because of the lowering of groundwater tables—by up to 200 feet in many areas. This will drive declines in species like mule deer, Rocky Mountain elk, sage grouse and Bonneville cutthroat trout. Most at risk will be species associated with the springs and wetlands that will dry up as the water beneath them is sucked away.
“Some of Nevada’s rarest and most unique species rely on wetlands and springs,” said Mrowka. “They’ve evolved over tens of thousands of years in response to isolation and fragmentation of habitat that occurred after ice ages. The Las Vegas water grab could undo all that and put them on a very real path toward extinction.”
Scientific research reveals that many of these species are often found in only one or two springs. As the springs are dewatered and flows are altered and eventually stopped, at least 25 species of Great Basin springsnails will be pushed to, or over, the edge of extinction. Also affected will be 14 species of desert fish such as the Moapa dace and White River springfish; frogs and toads will fare little better, with four species severely threatened by the dewatering.
Other impacts from the project disclosed in the BLM’s impact statement today include ground-level subsidence in excess of five feet on more than 240 square miles and tens of thousands of tons of new dust generated from dewatered and denuded lands.
The impact statement envisions a multi-layered scheme of monitoring to detect impacts, followed by mitigation measures to reduce the impacts. This approach is flawed in several ways. First, it places the Water Authority in the driver’s seat to do the monitoring and then faithfully report and address it—a scenario that defies reason and credibility. Second, it assumes that any observed impacts can be successfully addressed, while sound science suggests that the lag time between pumping and observation of the impact makes this virtually impossible.
Finally, it assumes that the Water Authority will have adequate funds available to conduct the monitoring and successfully mitigate damage. Experiences from a similar situation in the Owens Valley of California reveal that tens of millions of dollars are spent annually to mitigate just one problem: dust. “Given the $15.5 billion price tag of just constructing and financing the pipe, promises to mitigate the impacts are frankly laughable,” Mrowka said.
The public and elected officials now have at least 30 days to provide further comment and input to the BLM before a final decision is issued.
“This is a critical time for the Southern Nevada Water Authority, its board and all elected officials to take action to put the brakes on this disastrous and unneeded project,” said Mrowka. “There’s still time for the authority to table the project and begin the much-needed dialogue with the community on better options for meeting the Las Vegas Valley’s future water needs—high among them sensible growth management.”
- Redwoods are the world's tallest trees.
- Now scientists have discovered they are even bigger than we thought.
- Using laser technology they map the 80-meter giants.
- Trees are a key plank in the fight against climate change.
They are among the largest trees in the world, descendants of forests where dinosaurs roamed.
Pixabay / Simi Luft<p><span>Until recently, measuring these trees meant scaling their 80 meter high trunks with a tape measure. Now, a team of scientists from University College London and the University of Maryland uses advanced laser scanning, to create 3D maps and calculate the total mass.</span></p><p>The results are striking: suggesting the trees <a href="https://www.nature.com/articles/s41598-020-73733-6" target="_blank" rel="noopener noreferrer">may be as much as 30% larger than earlier measurements suggested.</a> Part of that could be due to the additional trunks the Redwoods can grow as they age, <a href="https://www.nature.com/articles/s41598-020-73733-6" target="_blank" rel="noopener noreferrer">a process known as reiteration</a>.</p>
New 3D measurements of large redwood trees for biomass and structure. Nature / UCL<p>Measuring the trees more accurately is important because carbon capture will probably play a key role in the battle against climate change. Forest <a href="https://www.wri.org/blog/2020/09/carbon-sequestration-natural-forest-regrowth" target="_blank">growth could absorb billions of tons</a> of carbon dioxide from the atmosphere each year.</p><p>"The importance of big trees is widely-recognised in terms of carbon storage, demographics and impact on their surrounding ecosystems," the authors wrote<a href="https://www.nature.com/articles/s41598-020-73733-6" target="_blank"> in the journal Nature</a>. "Unfortunately the importance of big trees is in direct proportion to the difficulty of measuring them."</p><p>Redwoods are so long lived because of their ability to <a href="https://www.nature.com/articles/s41598-020-73733-6" target="_blank" rel="noopener noreferrer">cope with climate change, resist disease and even survive fire damage</a>, the scientists say. Almost a fifth of their volume may be bark, which helps protect them.</p>
Carbon Capture Champions<p><span>Earlier research by scientists at Humboldt University and the University of Washington found that </span><a href="https://www.sciencedirect.com/science/article/pii/S0378112716302584" target="_blank" rel="noopener noreferrer">Redwood forests store almost 2,600 tonnes of carbon per hectare</a><span>, their bark alone containing more carbon than any other neighboring species.</span></p><p>While the importance of trees in fighting climate change is widely accepted, not all species enjoy the same protection as California's coastal Redwoods. In 2019 the world lost the equivalent of <a href="https://www.worldwildlife.org/threats/deforestation-and-forest-degradation" target="_blank" rel="noopener noreferrer">30 soccer fields of forest cover every minute</a>, due to agricultural expansion, logging and fires, according to The Worldwide Fund for Nature (WWF).</p>
Pixabay<p>Although <a href="https://c402277.ssl.cf1.rackcdn.com/publications/1420/files/original/Deforestation_fronts_-_drivers_and_responses_in_a_changing_world_-_full_report_%281%29.pdf?1610810475" target="_blank" rel="noopener noreferrer">the rate of loss is reported to have slowed in recent years</a>, reforesting the world to help stem climate change is a massive task.</p><p><span>That's why the World Economic Forum launched the Trillion Trees Challenge (</span><a href="https://www.1t.org/" target="_blank" rel="noopener noreferrer">1t.org</a><span>) and is engaging organizations and individuals across the globe through its </span><a href="https://uplink.weforum.org/uplink/s/uplink-issue/a002o00000vOf09AAC/trillion-trees" target="_blank" rel="noopener noreferrer">Uplink innovation crowdsourcing platform</a><span> to support the project.</span></p><p>That's backed up by research led by ETH Zurich/Crowther Lab showing there's potential to restore tree coverage across 2.2 billion acres of degraded land.</p><p>"Forests are critical to the health of the planet," according to <a href="https://www.1t.org/" target="_blank" rel="noopener noreferrer">1t.org</a>. "They sequester carbon, regulate global temperatures and freshwater flows, recharge groundwater, anchor fertile soil and act as flood barriers."</p><p><em data-redactor-tag="em" data-verified="redactor">Reposted with permission from the </em><span><em data-redactor-tag="em" data-verified="redactor"><a href="https://www.weforum.org/agenda/2021/03/redwoods-store-more-co2-and-are-more-enormous-than-we-thought/" target="_blank">World Economic Forum</a>.</em></span></p>
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