Surfing Tags / Dams

Hydropower Could be Risky Bet in Warming World

An indicator of where renewables investors are focusing their attention, large hydropower was left out of a major United Nations and Bloomberg report published this week showing that global investments in renewables spiked 17 percent in 2014.

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California Water Board Supports Searsville Dam Removal

Erosion, News
Apr
1

Today, the State Water Board sent Stanford a powerful letter supporting Searsville Dam removal, and stressing the importance of safely restoring sediment flow blocked by the dam for the health of the creek downstream and resiliency of San Francisco Bay wetlands and coastal communities in the face of sea level rise.

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Xboundary: a Film about Extreme Pollution Risks by Open-Pit Mining in British Columbia and Threats to Wildlife and Economy

An open-pit mining boom is underway in northern British Columbia, Canada. The massive size and location of the mines — at the headwaters of major salmon rivers that flow across the border into Alaska — has Alaskans concerned over pollution risks… These concerns were heightened with the August 4, 2014 catastrophic tailings dam failure at nearby Mount Polley Mine in B.C.’s Fraser River watershed.

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Largest Dam Removal in U.S. History Scientifically Characterized: A USGS Lecture on Largest U.S. Dam Removal

Erosion, News
Feb
25

Scientists worked together to characterize the effects of the largest dam removal project in U.S. history occurring on the Elwha River of Washington State. New findings suggest that dam removal can change landscape features of river and coasts, which have ecological implications downstream of former dam sites.

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Movement to Take Down Thousands of Dams Goes Mainstream

Erosion
Jan
29

Twenty years ago, dam removal was a fringe notion, and early demolition efforts gained support only because the dams in question were no longer in use. Now, the U.S. dam removal movement has wide acceptance as well as bigger ambitions.

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12 Dams that Changed the World

Renewable energy rather than mega dams and fossil fuels is the right choice for the 21st century. Even so, numerous destructive dams continue to be proposed and built on the Mekong, in the Amazon, throughout Africa, in China, the Himalayas and other parts of the world.

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Saving the Colorado River Delta, One Habitat at a Time

A trickle of water is being returned to a few parts of the dried-out delta—and those parts are blooming. Thanks to a bi-national agreement, a “pulse flow” of water eventually made its way to the sea, the first time the Colorado River reached the Gulf of California in years.

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Dams – Cutting off our Beach Sand; By Gary Griggs

The total amount of beach sand trapped behind all of California’s coastal dams totals about 200 million cubic yards, or a line of dump trucks bumper to bumper stretching completely around the world nearly four times. “Dams – Cutting off our Beach Sand” is excerpted from “Our Ocean Backyard- Collected Essays, ” a book by Gary Griggs.

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Protect the World’s Deltas

The rich delta ecosystem and the services it provides, storm protection, nutrient and pollution removal and carbon storage, are being destroyed. Worldwide deltas are on course to drown, starved of sediment by dams and dikes, and fragmented by economic development. Rising seas compound the sediment crisis.

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