Thailand’s Chao Phraya River Delta: Rapidly Sinking
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The Chao Phraya River Delta, one of the most economically and environmentally vital deltas globally, is sinking at alarming rates, threatening millions with severe flooding. Recent satellite data analysis reveals that subsidence in river deltas is becoming a greater danger to local communities than rising sea levels.
Approximately 500 million people inhabit this delta, including some of the world’s most impoverished communities. This expansive lowland area houses 10 megacities, each boasting populations exceeding 10 million.
Manuchel Shirzai and his team at Virginia Tech researched subsidence rates in 40 global deltas, including the Mekong, Mississippi, Amazon, Zambezi, Yangtze, and Nile rivers.
Shirzaei noted, “As deltas sink, global sea levels are also rising by about 4 millimeters annually, creating a compounded risk of flooding.”
The research utilized data from 2014 to 2023 collected by the European Space Agency’s Sentinel 1 satellite radar, which can detect changes in ground distance with precision up to 0.5 mm. Across the 40 studied deltas, over one-third showed signs of subsidence, with more than half of the area affected in 38 of these regions.
“In numerous cases, land subsidence contributes more to relative sea level rise than the ocean itself,” Shirzaei asserted. “In 18 out of 40 deltas, average subsidence rates surpass sea level rise, with the impacts being significantly pronounced in areas located less than 1 meter above sea level.”
The Chao Phraya Delta, where Bangkok is situated, ranks as the most affected among 40 nations concerning subsidence rates and impacted areas. Here, the average subsidence rate reaches 8 mm per year, which is double the global average for sea level rise, with 94% of the delta sinking at rates above 5 mm per year.
As a result of combined land subsidence and sea level rise, Bangkok and the Chao Phraya Delta confront a formidable projected sea level rise of 12.3 millimeters per year. Other cities like Alexandria in Egypt and Jakarta and Surabaya in Indonesia share similar predicaments of rapid land subsidence.
The researchers analyzed three major anthropogenic pressures: groundwater extraction, sediment alteration, and urban growth to assess their impacts on delta subsidence. Shirzaei explained that upstream dams, levees, and river engineering limit sediment input, which is crucial for delta maintenance, while urban development escalates pressure on delta surfaces and heightens water demand, furthering groundwater depletion.
Among these factors, groundwater extraction poses the most significant impact overall, although specific delta areas may be more influenced by sediment shifts and urbanization, the study found.
Shirzaei emphasized, “It would be misguided for policymakers to concentrate solely on sea level rise due to climate change and overlook local land subsidence. Unlike global sea level rise, human-driven land subsidence can often be tackled locally through groundwater regulation, managed aquifer recharge, and sediment management.”
He also pointed out that water-intensive facilities, such as data centers, may exacerbate this issue. “Our findings reveal that groundwater extraction is a major contributor to accelerated land subsidence in numerous delta regions, which can worsen when such facilities depend on local water sources,” he remarked.
In already vulnerable areas like the Mekong Delta, increasing water demand may hasten land subsidence, jeopardizing drainage, flood protection systems, and the durability of crucial infrastructure. “This doesn’t suggest data centers should be avoided altogether in the delta, but they must prioritize groundwater conservation, minimize overall water use, and take land subsidence into account,” said Shirzaei.
According to a recent study, severe and long-lasting river droughts, lasting over 85 years each, impacted the Indus basin from 4,400 to 3,400 years ago. This finding may provide insights into the gradual decline of this ancient civilization and underscores how environmental factors can influence historical societies.
An artist’s reconstruction of the gates and drainage channels of the ancient city of Harappa. Image credit: Chris Sloan.
The Indus Valley Civilization, one of the earliest urban cultures, thrived between 5,000 and 3,500 years ago along the Indus River and its tributaries in present-day Pakistan and northwestern India.
During its zenith, around 4,500 to 3,900 years ago, the civilization was noted for its advanced urban centers and sophisticated systems for managing water resources.
Despite this, the reasons behind the protracted decline following its peak remain largely elusive.
“The Indus River played a crucial role in the growth of the ancient Indus Valley civilization by offering a consistent water source for agriculture, trade, and communication,” stated Dr. Bimal Mishra from the Indian Institute of Technology Gandhinagar and his colleagues.
“Civilizations prospered near the Indus River and its tributaries approximately 5,000 years ago and evolved over time.”
“The mature Harappan phase (4,500 to 3,900 years ago) was marked by meticulously planned cities, advanced water management techniques, and an intricate writing system.”
“However, post 3,900 years ago, the Harappan civilization began to deteriorate and eventually fell into decline.”
“The causes for this decline are still under discussion. Potential factors encompass shifts in river dynamics influenced by climate change, ocean retreat, drought, flooding, and alterations in social and political structures.”
“Understanding ancient hydroclimatic events and their impact on societies provides vital insights into the susceptibility of complex societies to environmental pressures.”
For this research, the authors simulated climate patterns in the Indus Valley from 5,000 to 3,000 years ago.
They integrated these findings with various indirect climate indicators, including the geochemistry of stalactites and stalagmites from two caves in India and water level data from five lakes in northwestern India.
The results indicated that temperatures rose by approximately 0.5 degrees Celsius during this time, while average annual precipitation in the region decreased by 10% to 20%.
They were able to identify four significant drought periods lasting over 85 years between 4,450 and 3,400 years ago, impacting 65% to 91% of the Indus Valley area.
“These droughts affected the selection of settlement locations in the Indus Valley Civilization,” the researchers noted.
“From 5,000 to 4,500 years ago, settlements were primarily situated in regions with abundant rainfall.”
“However, after 4,500 years ago, they shifted closer to the Indus River as drought conditions began to limit water availability.”
“The last identified drought, lasting 113 years from 3,531 to 3,418 years ago, corresponds with archaeological evidence of significant urbanization in the Indus Valley Civilization.”
“Instead of collapsing abruptly due to sudden climate changes, the Indus civilization likely faced a gradual decline, with extended drought being a key factor,” concluded the researchers.
Their study was published on November 27 in the journal Communication Earth and Environment.
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H. Solanki et al. 2025. River drought forcing Harappan metamorphosis. Communication Earth and Environment 6,926; doi: 10.1038/s43247-025-02901-1
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ith Dulcet Welsh Tones, an actor reminiscent of Michael Sheen, invites players into the enchanting world of Mandrake. He affectionately describes Chandri’s village as “small” yet “complicated,” noting that “everyone has their own story.” The narrative alternates between a snug wooden cottage and a mossy forest inhabited by mythical creatures. The protagonist, a wizard-gardener, “smelt into the art of greenery and growth,” often returning home to transform into a sumptuous vegetable, some of which can be found in local supermarkets, while others are distinctly magical.
As a portrayal of rural life, Mandrake stands out as more enriching and appealing than most. It exudes a charm akin to classics like Harvest Moon and Stardew Valley, inviting players to immerse themselves in the cyclical rhythms of crop cultivation, scenic exploration, and engaging dialogues with quirky, upbeat townsfolk. However, there’s more beneath the surface. If you find the farming aspect dull, you can wander the fantastical paths of this brinonic-inspired realm, perhaps engaging with the deceased or harmonizing with the river.
Comfortable cultivation… Mandrake. Photo: Failbetter Game
Expect the peculiar in Failbetter’s latest release, the esteemed UK studio known for its acclaimed titles. Set within a shared fictional universe, their RPGs and atmospheric survival experiences have showcased masterful prose and mesmerizing world-building. The city of London has “fallen,” now submerged in an eerie underworld called Naisse, located along the shores of dark, vast seas.
These titles are steeped in a blend of terrifying humor and fascinating narratives. The Mandrake Foreground location presents a more accessible way to engage with the environment. As game director Adam Myers puts it, the charm of a Rural Life Sim is its capacity to “zoom in on one community over time.” Through days, nights, and seasons, players observe evolving spaces and their inhabitants. Myers reveals that he developed a profound understanding of the environment from a distinctly unfamiliar perspective.
However, Mandrake seeks to veer away from the lush trends dominating the genre. They cultivate expansive fields of wheat and prepare multiple meals daily. “Growing crops in large, rectangular, monocultures is not ideal,” Myers asserts. “And you won’t always find banquet-worthy ratatouille in your inventory with just 30 clicks.”
Complicating rural Sims in the countryside… Mandrake. Photo: Failbetter Game
Gift Giving, a conventional method for players to integrate with NPC neighbors in this genre, arrives with a twist. Players can’t simply hand out gifts (“That’s a bit annoying,” Myers jokes). Instead, they must articulate their reasoning for offering gifts, forming connections based on obligations.
The goal is not just to replicate patterns found in other rural life simulations but to “complicate” them with both thoughtful systems and unconventional influences. Myers passionately discusses esoteric elements such as anthropology, British folklore, and Renaissance alchemy. The world brims with quirky and mysterious legends, and among its peculiarities lies a “Quesimonastic organization” amid the Welsh backdrop, notably devoid of sheep.
The comforting ritual of country life may serve as a Trojan horse for a distinct and eccentric approach to failure. “One of the pitfalls we’ve encountered before is being too strange, too swift, too brash,” admits Myers. “We need to provide players with a firmer foundation to navigate the complexities more comfortably.”
These ancient forests undoubtedly harbor ominous creatures. Villagers may conceal numerous mental secrets. It’s reasonable to assume that Myers and his team will explore the depths of these eerie landscapes. However, perhaps there’s a crucial distinction in the tone they wish to maintain—one that is welcoming and “emotionally kind.” Unlike some other Failbetter titles, death doesn’t loom closely here. As Myers shares, “You probably won’t be able to consume yourself with this.”
Rivers like the Chuya in Russia can emit carbon dioxide and methane.
Parilov/Shutterstock
Globally, rivers are releasing ancient carbon into the atmosphere, revealing surprising insights for scientists and indicating that human impact on natural landscapes may be more severe than previously understood.
It is already established that rivers emit carbon dioxide and methane as part of the carbon cycle, a rapid gas exchange linked to the growth and decay of organisms, estimated to release around 2 Gigatonnes of carbon annually.
Researchers, including Josh Dean from the University of Bristol, explored the age of this carbon.
The team utilized radiocarbon dating to analyze carbon and methane released from over 700 river segments across 26 countries.
“When we compiled the available data, what we found was surprisingly significant. [Regarding the carbon released], these ancient stores may originate from much older reserves,” Dean states.
Ancient carbon is sequestered in geological formations such as rocks, peat bogs, and wetlands. The findings reveal that around one Gigatonne of this carbon is released annually via rivers, leading to the conclusion that ecosystems are currently removing one Gigatonne less carbon from the atmospheric balance than previously believed.
“This represents the first comprehensive assessment of river emissions on a global scale, which is quite remarkable,” remarks Taylor Maavara from the Cary Ecosystem Studies Institute in Millbrook, New York.
The pressing concern now is understanding the reasons behind the release of such ancient carbon. Factors might include climate change and human activities that alter natural landscapes. Dean observes that the carbon from rivers has appeared “aged” since the 1990s.
“Human activity may be accessing these long-term carbon reservoirs, which can lead to older carbon being released through these channels,” he explains.
For instance, rising temperatures due to climate change can result in carbon being released from thawing permafrost and increase the weathering rates of rocks. Additional factors such as peatland drainage and wetland desiccation could also play a role. Dean emphasizes the necessity for further research to ascertain the degree to which human activities contribute to this phenomenon and how carbon release varies over time.
“This is a critical area of research,” he asserts. “If we believe we are storing old carbon within these reservoirs, we’re mistaken; this understanding is crucial.” These insights carry significant implications for national climate strategies, particularly concerning reliance on natural ecosystems to mitigate ongoing emissions.
“This research raises intriguing questions about how and to what extent we can manage ancient carbon,” says Scott Teig from Oakland University in Rochester Hills, Michigan. He adds that tackling climate change is likely vital to prevent the release of CO2 and methane from these ancient reserves.
A little-known treaty that impacts millions of Americans and Canadians is currently entangled in the tariff dispute between the US and Canada.
This 60-year-old agreement regulates the waters flowing through the Columbia River, which extends from British Columbia to Montana, Idaho, Washington, and Oregon, and serves as the largest source of hydropower in the United States. However, parts of the treaty were set to expire during the presidential election in the US.
Negotiators were merely weeks away from finalizing the details of the treaty’s renewal when President Joseph R. Biden Jr. concluded his term. Subsequently, a decade’s worth of discussions faltered due to President Trump’s antagonism towards Canada, as he labeled Canada the “51st province,” imposed tariffs on Canadian exports, and referred to the water supply as a “major faucet.”
During a heated February call with then-Canadian Prime Minister Justin Trudeau, Trump brought the treaty into the conversation, suggesting Canada had exploited the United States. The implications were evident—it could become a leverage point in broader discussions aimed at redefining relations between the two nations.
Last week, at a White House meeting, Prime Minister Mark Carney and Trump avoided confrontation. However, the Trump administration perceives negotiations as being precariously balanced, even over treaties that are mutually beneficial. The unpredictability of Trump’s trade policies has cast a shadow over the future of the Pacific Northwest, heightening concerns about issues ranging from electricity supply to flood management.
Fueled by the internet and AI, data centers are leveraging the Columbia River’s hydroelectric power. A local dam supports the Twilight Soccer Game at Riverfront Parks, while irrigation from the reservoir nurtures the sprawling acres of Pink Women and Gala Apple gardens. Coordinated dam operations are crucial in preventing flooding, particularly in areas like Portland, Oregon.
Trump’s comments have resonated negatively with Canadians, who have long feared that the US seeks to exploit its natural resources, especially water. “They want our land, resources, and water,” Carney repeatedly emphasized during his term.
“Canadians experience a sense of betrayal,” Jay Inslee, former governor of Washington, remarked in an interview. The treaty interweaves a complex tapestry of cultural and economic interests. “Negotiating this is not straightforward,” Inslee added.
A spokesperson from British Columbia reported that there has been “no progress whatsoever” since the US State Department suspended negotiations in the broader context of reviewing international commitments. State Energy Minister Adrian Dix told nearly 600 attendees at a virtual town hall in March, “It sounds like a strange representation of the current situation.”
Dix noted that locals approached him in Save-on-Food markets, questioning whether Canada should exit the treaty altogether. “For residents in the Columbia Basin, this is intrinsic,” he stated. “It’s part of their lives, history, and identity.”
If the agreement collapses, the US anticipates it will be “more challenging to manage and predict” hydroelectric output to mitigate flooding in the Pacific Northwest, according to a nonpartisan Congressional report. It is projected that the region’s electricity demand may double within the next two decades, as anticipated by the Interstate Electricity Council.
The State Department has opted not to comment.
The origins of the treaty trace back to the events of 1948, following the Great Spring rains when the 15-foot wall of Vanport, Oregon—home to thousands of shipyard workers during World War II—collapsed. The calamity left 18,000 homeless and catalyzed negotiations with Canada to improve management of the Columbia River.
On one of President Dwight D. Eisenhower’s inauguration days, he ratified the Columbia River Treaty. This agreement exchanged commitments: Canada consented to construct multiple dams to manage flood control for the US, while the US agreed to provide Canada half of the extra electricity generated from the jointly managed river flows.
The original treaty came into effect in the autumn of 1964, with some provisions expiring 60 years later.
Discussions regarding the renewal of the treaty before it lapses in 2024 began during Trump’s first term. Biden temporarily halted them before resuming. In March 2023, the complete congressional delegation from the Pacific Northwest urged the President to expedite the negotiation process. Following a slow start, the US and Canada unveiled a preliminary outline of the agreement last summer.
The electricity generated under the initial treaty proved to be significantly more valuable than originally anticipated, bringing in around $300 million annually to Canada. This surplus prompted Canada to sell extensive amounts of power to the US, causing frustration among US utilities.
The updated agreement aims to reduce Canada’s share by about half over time, allowing the US to retain more electricity amid growing energy demands.
The Columbia River’s cheap and clean hydroelectric power has attracted high-tech companies intent on establishing data centers over the last two decades.
“The nation must recognize the significance of the Pacific Northwest in its burgeoning energy landscape,” stated David Kennedy, a scholar of local history at Stanford.
In the renewed treaty, Canada has decreased the obligation to maintain water storage for flood management, allowing for better prioritization of local communities and ecosystems around the reservoir. The original agreement led to drastic water level fluctuations that exposed extensive land when snowmelt resulted in lower levels.
“Each year, this exposed ground causes severe dust issues,” recounted a resident near Valemount, British Columbia, during the town hall.
The new plan aims to stabilize reservoir levels, enabling Canada to rehabilitate coastal ecosystems and enhance recreational opportunities.
Indigenous tribes were consulted during negotiations, but the initial treaty did not address the destruction of fishing grounds and towns due to dam constructions.
Jay Johnson, a negotiator for the Syilx Okanagan Nation, mentioned during the virtual town hall that tribes on both sides of the border have united to restore salmon migration. The updated framework includes provisions for excess water during dry periods, vital for salmon survival, especially considering climate change.
In the fall, when certain provisions of the original treaty lapse, the state established a three-year interim agreement, though additional parliamentary funding is still required. Both parties must provide ten years’ notice should they choose to withdraw from the treaty.
“This arrangement benefits individuals on both sides of the border; complications arise without a treaty,” noted Jonathan Wilkinson, Canadian Minister of Energy and Natural Resources.
The next steps remain uncertain. While some individuals involved in the negotiations remain in their positions, Trump has yet to appoint a deputy secretary for Western Hemisphere affairs. The situation is further complicated as Trump seeks to trim staff at key federal agencies involved in treaty discussions, including the National Oceanic and Atmospheric Administration and the Federal Power Administration.
With negotiations in limbo, stakeholders involved in the discussions remain hopeful for a resolution on the renewed treaty.
Barbara Kossense, a law professor at the University of Idaho, emphasized that while the Trump administration may not prioritize salmon habitats or Indigenous involvement, Canada does. Water can flow downstream, but salmon swim upstream, and the US could benefit from adhering to environmental provisions, Kossense asserted.
Additionally, supporters highlight years of bipartisan backing from Senator Maria Cantwell of Washington, a leading Democrat on the Senate Commerce Committee, and Jim Lisch of Idaho, Republican chair of the Senate Committee on Foreign Affairs.
“There will be unanimous agreement on this, irrespective of party lines,” declared Scott Sims, chief executive of the Public Power Council, which represents consumer-owned utilities in the region.
The stakes are tangible. In 1996, following heavy snowfall, a storm known as the Pineapple Express unleashed heavy rainfall in the Portland area, causing significant flooding. The Army Corps of Engineers worked diligently for several days, operating over 60 dams within the Columbia River System in conjunction with Canadian partners to mitigate flooding issues.
A smaller river in Columbia experienced flooding that resulted in eight casualties. Downtown Portland narrowly avoided disaster thanks to makeshift embankments created from plywood and sandbags.
Ivan Penn Contributed report from Houston Matina Stevis-Gridneff From Toronto.
Thousands of homes lost power, as downed power lines and trees blocked highways in Washington state on Tuesday due to a powerful atmospheric river event, officials announced.
Forecasters stated that a storm could bring up to 15 inches of rain and heavy snowfall in the mountains. By 7 p.m. local time, about 100,000 homes and businesses in Washington and over 14,000 homes in Oregon were without power, as reported by news agencies on the Rack Website poweroutage.us.
The Bellevue, Washington, fire department warned, “Trees are falling across the city, hitting homes.” They advised residents to stay away from windows and not to go outside if possible. X was contacted on Tuesday around 8pm.
Weather forecasters warned of a whiteout snowstorm in the Cascade Range and possible 2 feet of snow in Mount Shasta, Northern California, along Interstate 5. High wind gusts of up to 90 mph were recorded on Mount Rainier and 52 mph in Seattle-Tacoma International Airport.
Known as bomb cyclones, these intense winds are caused by rapidly intensifying storm systems with decreasing atmospheric pressure. Scientists attribute this phenomenon to climate change generating more atmospheric rivers, which are significant contributors to precipitation on the West Coast.
An atmospheric river storm could bring significant rainfall over a three-day period in Northern California, with a flood watch issued in several areas. These storms help replenish water supplies after dry summers, but can also lead to severe flooding and damage.
Satellite images show a weather system moving towards the Pacific Northwest, prompting concerns of damaging winds, rain, and snow. Climate scientists are closely monitoring the storm and its potential impacts on various regions.
Satellite images show the weather system moving closer to the Pacific Northwest on Tuesday morning. NOAA
As the storm progresses, residents in affected areas are advised to stay updated on weather alerts and follow safety guidelines to minimize risks and potential damage.
Meta’s content moderation board decided that implementing a complete ban on pro-Palestinian slogans would hinder freedom of speech. They supported the company’s choice to allow posts on Facebook that include the phrase “from the river to the sea.”
The oversight committee examined three instances of Facebook posts featuring the phrase “from the river to the sea” and determined that they did not break Meta’s rules against hate speech or incitement. They argued that a universal ban on the phrase would suppress political speech in an unacceptable manner.
In a decision endorsed by 21 members, the committee upheld Meta’s original decision to keep the content on Facebook, stating that it expressed solidarity with the Palestinian people and did not promote violence or exclusion.
The committee, whose content judgments are binding, mentioned that the phrase has various interpretations and can be used with different intentions. While it could be seen as promoting anti-Semitism and the rejection of Israel, it could also be interpreted as a show of support for the Palestinians.
The majority of the committee stated that the use of the phrase by Hamas, although banned from Meta’s platform and considered a terrorist organization by the UK and the US, does not automatically make the phrase violent or hateful.
However, a minority within the committee argued that as the phrase appeared in Hamas’s 2017 charter, its use in the post could be construed as praising the banned group, particularly following an attack by Hamas. The phrase “From the river to the sea, Palestine will be free” refers to the territory between the Jordan River and the Mediterranean Sea.
Opponents of the slogan claim it advocates for the elimination of Israel, while proponents like Palestinian-American author Yousef Munayyer argue it supports the idea of Palestinians living freely and equally in their homeland.
The ruling pointed out that due to the phrase’s multiple meanings, enforcing a blanket ban, removal of content, or using the phrase as a basis for review would impinge on protected political speech.
In one of the cases, a user responded to a video with the hashtag “FromTheRiverToTheSea,” which garnered 3,000 views. In another case, the phrase “Palestine will be free” was paired with an image of a floating watermelon slice, viewed 8 million times.
The third case involved a post by a Canadian community organization condemning “Zionist Israeli occupiers,” but had fewer than 1,000 views.
A Meta spokesperson, overseeing platforms like Instagram and Threads, remarked: “We appreciate the oversight committee’s evaluation of our policies. While our guidelines prioritize safety, we acknowledge the global complexities at play and regularly seek counsel from external experts, including our oversight committee.”
Salmon will soon be able to migrate freely up the Klamath River and its tributaries, marking a significant milestone in the watershed near the California-Oregon border. The largest dam removal project in American history is reaching completion.
This week, excavators will destroy rock dams that have been obstructing water flow upstream on two rivers. Two embankments, Iron Gate and Copco No. 1, which were almost completely removed, will now allow the river to flow freely through its historic channel, providing salmon access to vital habitat just in time for the fall king salmon season.
A Yurok tribal member leads a redwood canoe tour on the lower Klamath River in Klamath, California, on June 8, 2021. As salmon in the Klamath River decline, the Yurok Tribe is turning to alternative sources of revenue, such as ecotourism and canoe tours, to support the tribe. Nathan Howard/AP File
“Seeing the river return to its original course and the dams removed bodes well for our future,” said Leaf Hillman, a ceremonial leader for the Karuk people who have been advocating for Klamath dam removal for over 25 years. This is crucial for the tribe and others in the region.
The demolition precedes the anticipated completion of the removal of four massive dams on the Klamath River by about a month. This is part of a national movement to restore rivers to their natural state and revive ecosystems for fish and wildlife.
Since February, over 2,000 dams have been removed in the United States, with many removed in the past 25 years, according to the environmental group American Rivers, including dams on the Elwha River in Washington state and Condit Dam on the White Salmon River, a tributary of the Columbia River.
“Now is when the healing process truly begins for the river,” said Joshua Chenoweth, a senior ecologist with the Yurok Tribe, who has long advocated for dam removal and river restoration. “Removing the dams allows the river to naturally restore itself.”
The Klamath River, once a prominent salmon-producing region, saw a drastic decline in fish populations due to dams built by PacifiCorp between 1918 and 1962. These dams disrupted the river’s natural flow and impacted the salmon’s life cycle.
Efforts to remove the dams intensified after a bacterial outbreak in 2002 killed thousands of fish, mainly Chinook salmon, prompting tribes and environmental groups to push for action. The dam removal plan was approved in 2022.
Following the removal of the smallest dam, Copko 2, workers drained the reservoirs of the other three dams and began dismantling their structures in March.
Gilbert Myers measures water temperature in a king salmon trap in the lower Klamath River, California, on June 8, 2021. Nathan Howard/AP File
Removing the dams on the Klamath River will not significantly impact electricity supply, as the dams produce less than 2 percent of PacificCorp’s energy capacity, enough for around 70,000 homes. While hydroelectric power is considered clean and renewable, environmental groups and tribes have targeted large dams in the Western U.S. due to their negative impact on fish and river ecosystems.
The project’s cost of approximately $500 million will be covered by taxpayers and Pacific Command funds.
The timeline for the salmon’s return and the river’s recovery remains uncertain. There have been reports of salmon at the river’s mouth beginning to migrate. Michael Belchik, a senior water policy analyst for the Yurok Tribe, anticipates the salmon passing through Iron Gate Dam soon.
“We can expect to see early signs of recovery,” he said. “I believe we’ll witness fish swimming over the dam, possibly this year or certainly by next year.”
There are two small upstream dams on the Klamath River that allow salmon to pass through fish ladders, enabling them to overcome the dam barriers.
Mark Brantham, CEO of the Klamath River Restoration Authority overseeing the project, pointed out that it took roughly a decade for the Lower Elwha Klallam tribe to resume fishing after the Elwha River dam removal.
“The impacts on fish recovery are uncertain,” he stated. “It will take time to undo the damage and restore the river system after a century of impact.”
Have you ever experienced this feeling before? On a blazing hot day, the desire to plunge into a cool stream of water intensifies by the minute. The water appears pristine, clear, and incredibly refreshing. However, in reality, it could be extensively contaminated.
Even the purest rivers can harbor harmful bacteria, including fecal bacteria originating from livestock manure and human waste.
In a recent announcement, the Designated bathing area in the UK, a favored holiday spot, has been a subject of concern due to issues such as being submerged in sewage and incidents of rowers contracting E. coli infections. To address these concerns, we consulted with water and sanitation expert Professor David Werner to provide essential information for safely enjoying wild swimming this summer.
Werner’s research delves into treated sewage, stormwater (untreated sewage overflows following heavy rains), and occasionally illegal sewage disposal in dry weather. These factors impact both human health and ecosystem health. While human waste is discharged into oceans, rivers tend to exhibit higher concentrations of human waste and the accompanying harmful bacteria due to lower dilution levels compared to water bodies, increasing the risk of exposure to harmful substances.
(Notably, a microbiology professor, William Gays, mentioned in BBC Science Focus that rivers have only recently been subjected to the same microbial testing as coastal waters. Moreover, wastewater discharged into the ocean is often subjected to more stringent treatment standards than rivers, including ultraviolet disinfection.)
The following guidelines mainly focus on rivers but are also relevant for coastal swimming activities.
The key takeaway? Avoid swimming after rainfall.
How do diseases enter rivers, and what is the risk of swimming in them?
Fecal contamination doesn’t always mean significant. The majority of people’s stool contains beneficial bacteria essential for our health. However, the stool of an ill individual harbors bacteria responsible for the illness, potentially leading to disease transmission.
According to Warner, the risk of contracting a disease from a river is relatively low, but it escalates if you ingest river water (discouraged but not impossible).
This can result in unpleasant symptoms like infections and diarrhea. The worst-case scenario involves acquiring antibiotic-resistant bacteria, an eventuality deemed highly improbable by Warner.
So, should one abstain from wild swimming altogether? Ultimately, it boils down to whether you are willing to accept the (generally minimal) risk for the mental health benefits, as Warner highlights.
“There is no such thing as absolute safety or zero risk,” he states. “Each time we embark on a car journey, we weigh the trip’s advantages against the accident risks. Similarly, outdoor recreation offers significant mental health perks, particularly for urban dwellers.”
How to safeguard yourself from sewage while swimming
Warner and his team are currently devising a device capable of swiftly testing water for contaminants, akin to a lateral flow corona test, though substantial research is required to materialize this concept.
Until this technology is available, several straightforward methods can help identify sewage presence while swimming in rivers this summer. Here are Warner’s recommendations:
1. Choose your spot wisely
According to Werner, it is crucial to avoid swimming downstream from a sewage treatment plant under any circumstances. While untreated sewage overflows are a common concern, treating sewage does not completely eradicate the risks; it merely diminishes them.
“Treating wastewater significantly reduces the levels of harmful bacteria, possibly by a factor of 1,000, but it doesn’t eliminate them,” Werner explains.
“Hence, if a location is situated immediately downstream of a treatment plant discharge point, one can expect a consistent presence of fecal bacteria due to the continuous discharge.”
Individuals can consult the “Poop Map” and trace their local river upstream to identify any treatment facilities along the route.
2. Check the poop map
UK organizations such as Rivers Trust and Surfers Against Sewage have developed an interactive map showcasing regular treated sewage discharges and anticipated untreated sewage overflows across the UK in 2023.
To locate a wastewater treatment plant on The Rivers Trust map, click the yellow square corresponding to your area or tap the brown circle icon, peruse the cards to pinpoint locations. The phrase “Sewage Discharge – Final/Treated Effluent – Water Companies” typically indicates a wastewater treatment facility.
The Rivers Trust’s interactive wastewater map displaying treated and untreated sewage discharge locations into UK rivers in 2023. – Image credit: Rivers Trust
This year, the charity integrated near real-time data into its maps. “This marks a significant advancement for individuals seeking real-time updates,” remarks Warner. “We strongly recommend utilizing these online resources, offering current information.”
Presently, individuals can ascertain if sewage has been discharged within the last 24 hours, albeit inland data is exclusive to designated bathing locations and rivers within the Thames Basin (Northumbrian Water also provides a County-level map while coastal regions are included).
3. Monitor the weather
Despite the allure of swimming on a sunny day, verify there hasn’t been rainfall for a few days. Swimming post-rainfall significantly heightens the possibility of encountering contaminated water due to sewer overflows and increased water release during heavy downpours.
To compound matters, even as a dry spell seems to prevail and swimming appears safe, hidden risks could lurk upstream. Thunderstorms can unleash localized rainfall, implying that upstream areas may experience heavy showers despite sunshine at your location.
4. Steer clear of small rivers
In addition to potentially turbid waters, small rivers tend to exacerbate the situation as sewage, whether treated or untreated, is less diluted in these settings.
Warner adheres to a safety benchmark stipulating that raw sewage minimal dilution should be 1,000 times for paddling and over 10,000 times for swimming. While calculating these dilution levels is not advised, the underlying principle is straightforward: “A large river with vigorous flow signifies ample dilution,” Werner asserts.
Nonetheless, disparate river segments need not cause undue concern: while one side may seem stagnant relative to the center, the water mixes uniformly.
5. Keep tabs on the paper trail
Exhibit prudence: refrain from swimming if toilet paper is visible. Alarming indicators surpass toilet paper and include wet wipes and sanitary pads crafted from plastic materials that should not be flushed but often are.
According to Werner, unlike toilet paper and human excrement, these items do not disintegrate in swiftly moving waters.
6. Stay informed
“After frolicking in the river, diligently cleanse yourself. Embrace standard personal hygiene,” stresses Werner.
About our experts
David Warner serves as a Professor of Environmental Systems Modelling at Newcastle University. Previously, his research concentrated on sanitation and water quality in low-income countries by utilizing DNA sequencing and assessing microbial hazards in rivers. During travel restrictions amid the pandemic, he shifted his focus to the UK’s rivers. His research on post-rain fecal bacteria levels has been documented in various journals such as Water Science and Technology, Comprehensive Environmental Science, and Environmental Pollution.
William Gays, a Professor of Microbiology at the European Centre for Environment and Human Health within the University of Exeter’s Medical School, conducts research published in journals like International Journal of Antimicrobial Agents, Food and Environmental Virology, and Water Research.
With just over a month until the Olympics begin, pollution levels in Paris’ River Seine remain too dangerous for Olympic athletes to compete, according to a city monitoring report.
of Report finds elevated levels of E. coli Routine samples taken at several points along the Seine between June 10 and 16 contained toxins that are indicators of fecal matter.
To make this possible, Paris has spent about $1.5 billion cleaning up the city’s aging sewer system, which drains water into the river during heavy rains. But a new report suggests those efforts may not have been enough.
The International Olympic Committee and Paris 2024, the local organizing body in Paris, did not immediately respond to inquiries from NBC News.
Last year, test events for triathlon and marathon swimming were held on the Seine. Designed to ensure the Olympic Games run smoothly — The service was halted in August after the river failed pollution tests.
Weather can play a big role in the Seine’s pollution: Unusual rainfall in May and rainy days last week caused a significant drop in water quality, according to a new report, along with a lack of sunny days and periods of low water flow, which help reduce bacteria.
“The sun inactivates bacteria,” says Helena Solo-Gabriel, a professor in the University of Miami’s Department of Chemical, Environmental and Materials Engineering.
Solo-Gabriele added that if fecal matter in the water where athletes swim exceeds safety standards, it could cause gastrointestinal illness.
The situation on the Seine has been monitored for several months. Non-profit organization Surfrider Foundation Europe It released its own results from six months of testing and found that nearly all samples failed to meet acceptable levels of E. coli and enterococcus, two types of bacteria that scientists typically test for in fecal samples.
“High bacteria counts mean there’s too much waste in the water, and waste carries bacteria that can make people sick,” says Daniel Nyzgorski, an ecologist who monitors water quality in King County, Washington.
But he added that many people don’t realize that most strains of E. coli are harmless, and studies show that swimming-related illnesses rarely result in hospitalization.
Paris Mayor Anne Hidalgo and French President Emmanuel Macron have promised to swim in the Seine to prove its water is clean, but have yet to do so.
Paris is not the first city to face a bacterial problem during the Olympics. AP analysis Levels of viruses and bacteria from fecal contamination at Olympic venues in Rio de Janeiro were found to be 1.7 million times higher than levels considered safe on some U.S. beaches. Brazilian government and IOC officials acknowledged that the water was contaminated but said the sites where athletes were competing met World Health Organization standards. According to the New York Times:.
“There’s a lot of polluted water out there. It’s a problem wherever there’s urbanization and the environment doesn’t have the natural flow that dilutes the bacteria,” Solo-Gabriel said.
Experts said the Olympics bring particular attention to these challenges every four years.
“Hopefully this case will bring attention to the problem of river pollution that we need to address not just for Olympic athletes, but for everyday people,” said Karen Levy, a professor at the University of Washington’s School of Environmental and Occupational Health.
NBC News is a unit of NBCUniversal, which owns U.S. media rights to the Olympics through 2032, including the 2024 Paris Games, which begin July 26.
Pebanista Yacluna About 16 million years ago, it lived in the Miocene Amazon of Peru.
The ancient dolphin was estimated to be 2.8–3.5 m (9.2–11.5 ft) long, making it the largest freshwater dolphin species. dentate (Dolphins, porpoises, and all other toothed whales) are known.
Such large sizes have also been recorded in other proto-Amazonian inhabitants (i.e. fish and crocodiles) and may be due to the greater availability of resources in the proto-Amazonian ecosystem.
“16 million years ago, the Peruvian Amazon looked very different from what it looks like today,” said Dr. Aldo Benitez Palomino, a paleontologist at the University of Zurich.
“Most of the Amazon plain was covered by large lake and swamp systems called pebas.”
“This landscape included aquatic, semi-aquatic, and terrestrial ecosystems (swamps, floodplains, etc.) and spanned what is now Colombia, Ecuador, Bolivia, Peru, and Brazil.”
“When the Pebas system began to give way to what is now the Amazon about 10 million years ago, the new habitat caused Pebanista Yaclunaprey disappears, and the giant dolphin is driven to extinction. ”
“This opened up an ecological niche that is used by relatives of today's Amazon river dolphins (genus Delphinus). inia), and with the rise of new cetaceans such as modern dolphins, they were on the brink of extinction in the oceans. ”
Pebanista Yacluna was a member of platanist ideasa group of dolphins that were common in oceans around the world from 24 million to 16 million years ago.
“We discovered that size is not the only thing to note,” said Dr. Aldo Benitez Palomino, a paleontologist at the University of Zurich and the Natural History Museum of the National University of San Marcos. Told.
“With this fossil record excavated in the Amazon, we expected to find a living relative of the Amazon river dolphin, but instead we found the Amazon river dolphin's closest relative. Pebanista Yacluna It is a river dolphin from South Asia. ”
“Pebanista Yacluna and Platanista Both share a highly developed facial crown, a specialized bone structure associated with echolocation, the ability to emit high-frequency sounds and “see” by listening to their echoes, which is useful for hunting. relies heavily on this. ”
“Echolocation and biosonar are even more important for river dolphins because the waters they live in are very murky, which impedes their vision,” said Dr. Gabriel Aguirre Fernandez, a paleontologist at the University of Zurich.
“The elongated snout with many teeth suggests that: Pebanista Yacluna Like other species of river dolphins today, they eat fish. ”
large adult skull Pebanista Yacluna It was discovered in 2018 at an exposed stratigraphic level along the Rio Napo in Loreto, Peru.
“After 20 years of research in South America, we have discovered several giant dolphins in this region, but this is the first of its kind,” said Dr. Marcelo Sánchez Vilagra, a paleontologist at the University of Zurich. .
“We were particularly intrigued by its unique and deep biogeographical history.”
team's paper Published in the Journal on March 20, 2024 scientific progress.
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Aldo Benitez Palomino other. 2024. The largest freshwater toothed whale: A relative of the South Asian river dolphin that lives in the primitive Amazon. scientific progress 10(12); doi: 10.1126/sciadv.adk6320
As California prepares for another strong atmospheric river storm on Sunday, Lake Tulare serves as a reminder of the impactful effects these extreme storms can have.
The lake’s floodwaters, which were formed after approximately 12 atmospheric river storms hit California in 2023, are still present 9 months after the resurgence of the “ghost lake.” More than a month later, they still cover thousands of acres of prime farmland.
The continuing presence of the lake in this part of the Central Valley emphasizes how the environmental impacts of last year’s extreme rainfall are still affecting California. While this weekend’s storms could bring heavy precipitation to other parts of the state, most flooding effects are not expected to last long.
Currently, Lake Tulare is rapidly shrinking despite recent rainfall. As of Thursday, about 4,532 acres of farmland were still underwater, but the floodwaters have subsided, according to Kings County spokesman Justin Caporusso. This means the lake is now less than 20 times smaller than last year’s peak, and life is returning to normal for nearby residents.
Sgt. Nate Ferrier of the Kings County Sheriff’s Office, who visited the lake in late January, noted that much of the lake has been cleaned up.
“The farming community was already revitalized,” he said. “There were tractors everywhere.”
The lake was a natural feature of the southern San Joaquin Valley until settlers dug irrigation canals to reroute water and drain agricultural land more than a century ago. Last year, the Tulare Basin flooded after a series of storms because reservoirs could not handle heavy snowmelt runoff from the Sierra Nevada mountains.
Caporusso stated that this week’s atmospheric river storms, expected to be accompanied by a significant storm on Sunday, are unlikely to have a significant impact on Tulare Lake. The reservoir upstream of the lake has the capacity to handle the precipitation, and the California Department of Water Resources found that about 45% of normal snow falls in the southern Sierra Nevada during this period.
Pigs are charismatic and intelligent animals, but this piglet prefers ginger biscuits. The red river hog, also known as the “dwarf pig”, is a wild swine native to western and central Africa.
Featuring a striking red coat, they are the most colorful of the pigs. Its bright fur is covered by a thin white mane that runs the length of its back, on stubby black legs and sturdy treadles.
Its face is part ALF (an alien life form from the 80's American sitcom) and part Dobby the house elf (from the movie). Harry potter story).
Whiskers protrude from the base of its long black nose, and its jet-black eyes are framed by bold white markings. Contrasting markings are a form of camouflage called disruptive coloration, which breaks up the animal's outline so that it blends into the background.
But those ears are the main event. The tapered triangle gives way to spectacular long tufts of hair that frame the face and add a touch of wizardly chic to this animal's unconventional beauty.
Red River Hog lives small group Approximately 4 to 20 animals called sounders. It is found in rainforests and adjacent savannahs, often near rivers and swamps. Each sounder is led by a boar and oversees a harem of females and their young.
Weighing between 50 and 100 kg (110 and 220 lb), they may be among the smaller pigs, but they are energetic. Males fend off rivals by head-butting, snouting, and whipping each other with their tails, and easily protect their families from leopards, spotted hyenas, and pythons.
Within groups, individuals communicate with an inventive repertoire of moans and shrieks. They take a nap and forage for food at night. Like all pigs, red river hogs are omnivorous and will eat anything they can find. Fruits, seeds, nuts, eggs, snails, carrion, and lizards are all prey, as are livestock and crops such as goats and cassava.
They use their teeth to dig for roots, bulbs, and insects, and swim to forage for aquatic plants. They also have a fondness for Boko tree seeds (Balanite Wilsoana), they find undigested material in elephant feces or by following chimpanzees in the hopes of finding fallen fruit.
Females give birth to up to six piglets between February at the end of the dry season and July in the middle of the rainy season. Mothers build temporary nests out of dead leaves and grass and take care of their children while being protected by wild boars.
Piglets initially develop dark brown fur with yellow stripes and spots, are weaned at four months of age, and grow ginger-like fur after two months. The black spots on the face fully mature after about two years.
Although the species is not currently endangered, there are concerns that local populations could decline as pigs continue to encroach on farmland and the bushmeat trade intensifies. It's time for people to come together and save this piggy bacon before things get worse.
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