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CARMEL RIVER DAM REMOVAL
In 1918–1921, one dam built on California's Carmel River provided water storage but blocked fish runs; in 2015 it came down, reopening 25 miles of habitat for steelhead troutA century-old dam on California's Carmel River was removed, restoring fish spawning grounds. Crews rerouted the river and dismantled the st...
Nepal issues fresh flood alert as water levels rise across several districts, death toll nears 1,000Nepal authorities issued a fresh flood alert for several districts. The death toll from last week's catastrophic floods climbed close to on...
In 1996, West Virginia's BRWA and WVWRI developed a plan to treat Swamp Run’s acid mine drainage. 28 years later, 2 projects had dramatically improved the stream’s pH with lasting gainsSwamp Run in Upshur County, West Virginia, faced decades of water quality problems caused by acid mine drainage from buried coal refuse lef...
What is a glacial collapse? The science behind the Nepal-Tibet floodsA glacial collapse occurs when a large mass of ice and rock suddenly breaks from a mountain slope, potentially triggering avalanches, debri...
Nepal faces secondary flash flood threat as debris forms dam: ICIMOD cryosphere specialistNepal faces secondary flash flood risks as debris forms a temporary dam. Over 470 people have died and nearly 1,000 are missing from recent...
In 2014, Arizona used fish poison to clear an invasive fish from Virgin River after mechanical removal methods failed. Then the red shiner came backFor years, conservationists waged a relentless battle against the invasive red shiner in the Virgin River. Initial rotenone treatments show...
Nepal flood reiterates that water can give both life and deathThe latest "liquid concrete" flow of water from the Himalayas has far too many precedents in India and Nepal; what happens on the Chinese s...
In 2016, NYSDEC and partners removed Shapp Pond Dam after 50 years of blocking migratory fish. 4 years later, restored habitat showed significant gains in stream health and wildlifeThe removal of the Shapp Pond Dam in Dutchess County, New York, helped restore aquatic connectivity and improve stream habitat along the Ea...
Bihar braces for floods as Nepal rains push rivers above danger markBihar faces significant flood threats as river water levels continue to rise. Heavy rainfall and flash floods in Nepal have caused major ri...
Nepal issues new flood warning after dam breach in TibetNepal authorities issued a fresh flood warning after water levels rose significantly. Rising water mixed with mud increased the risk of ano...
In 2021, Pat McElhenny led removal of a dam that had held back water for 100 years. 1 year later, the original Sterry Creek channel resurfaced intact, restoring a natural floodplain on Moosic MountainA 100-year-old dam came down on Moosic Mountain in Pennsylvania, but the real surprise appeared afterward. Sterry Creek’s original channel ...
Nepal floods damage 360 MW of hydro capacity, country may turn to India for powerNepal's hydropower generation capacity has been significantly reduced by recent flash floods. This disaster has damaged several key power p...
Washington state biologists reintroduced beavers on tributaries, and within years their dams slowed stream flow and rebuilt banks that resist erosionWildlife departments are making strides in reintroducing beavers to rejuvenate damaged stream ecosystems. These industrious creatures help ...
Beginning in the 1930s, America built 29 giant locks and dams across the Mississippi River and they turned a wild river into a massive water staircaseThe Upper Mississippi River's navigation was transformed by America's construction of locks and dams in the 1930s. While these aging struct...
In 1992, Congress authorized the removal of 2 dams that had blocked salmon for a century. 24 years later, the Elwha River once again flowed freely from the Olympic Mountains to the seaElwha River Restoration changed one of America’s most remarkable river recovery stories. Two dams once blocked salmon from reaching upstrea...
Four dams built on the Klamath River between 1918 and 1966 made power, not water storage; in 2024, the last came down, reopening 420 miles of salmon habitatIn a groundbreaking initiative, four dams on the Klamath River spanning California and Oregon have been dismantled after a century of exist...
In 2014, Maine began developing a fish elevator to carry American shad past Milford Dam. 12 years later, the system could reopen 600 miles of river habitat to a fish whose migration has been blocked for decadesA Maine fish elevator could reopen 600 miles of river habitat for alewives, giving a small fish a much bigger chance to return upstream. Th...
In 2012, PacifiCorp launched a trap-and-haul program to move adult salmon upstream past Merwin Dam. 14 years later, researchers found 2 stages in the system but 1 decisive bottleneck: young salmon failing to find the artificial current downstreamA trap-and-haul program on Washington’s Lewis River helps adult Chinook salmon bypass Merwin Dam by transporting them in trucks to upstream...
In 2024, managers deliberately cooled the Colorado River to protect the Grand Canyon from invasive smallmouth bass. 2 years later, no bass recruitment had been detected, but the effort cost $19.1 million in replacement powerManagers at Glen Canyon Dam used an unusual strategy to protect native Colorado River fish from invasive smallmouth bass: they deliberately...
In 1913, the Army Corps launched construction of Troy's Federal Dam, using engineers experienced on the Panama Canal. 113 years later, the lock and dam still supports New York's Hudson River navigation and remains a landmark of American engineeringTroy Lock and Dam: Troy's Federal Dam, built in 1913, supported river navigation for over a century. This engineering project connected the...