#still-water

#still-water

If the lake level drops below 3,490 feet - termed the minimum power pool - the turbines that generate electricity have to be shut down. When the water level reaches critically low thresholds, air is sucked down like a whirlpool into the penstocks, forming explosive bubbles which can cause massive failure inside the dam.

"If you would ask a regular person, do you think fish can climb falls, most of them will tell you: you are crazy. Well, it exists, it is out there."

During major floods, thousands of tiny fish convene at Luvilombo Falls in the upper Congo River Basin to undertake a peculiar vertical migration, described for the first time today in Scientific Reports.

Peat bogs provide huge value to humans and the environment. When healthy, they store twice as much carbon as all the world's forests, reducing global emissions.

The Colorado River is an interconnected system, sustained by Rocky Mountain snowpack, rainfall and groundwater. It is fragile, and under increasing stress. Two and a half decades into this century, the river that built the modern West has 20% less water flowing through it than it did on average in the last century. As heat and drought intensify, so do the stakes: Failure to recognize the severity of changing conditions, managing the river in parts without considering needs of the whole and inadequate planning for long-term shortages put the future of all the basin at risk.

Along coastlines, where tides are typically magnified, they profoundly affect navigation, commerce, coastal flooding, water properties and sediment transport. Tides impact the flooding of rivers and, thus, influence the extent of their floodplain, which has cascading effects on biogeochemical and ecological processes.

The government said the plans would increase the number of England's official bathing sites to 464. An official bathing spot on the Thames in London would mark a "vast transformation" in water quality in the river which was declared biologically dead in the 1950s due to pollution, officials said. Water minister Emma Hardy said rivers and beaches were "at the heart of so many communities, where people come together, families make memories and swimmers of all ages feel the benefits of being outdoors safely".

Whenever I'm asked about my recent trip to Alaska-a journey to visit Katmai National Park & Preserve and Kenai Fjords National Park-I nearly always mention the scale. The scale of the glaciers, the mountains, the sunsets, and the utter wilderness; every aspect of the landscape was just so much larger and more grand than anything I'd ever experienced. Magnitude is a continuous theme all across Alaska.

Studio Millspace Text description provided by the architects. Throughout eight months of design and on-site work, we realized that what truly matters is not the completeness of drawings, but the intuition shaped by being present. Around 70% of the layout was defined early on, while the remaining 30% was deliberately left without a set functionallowing light, behaviors, and moods to participate in forming the space.

Every time a boat passes through a canal lock, thousands of litres of water are released and must be replaced, usually from other sources. To reduce water loss, engineers sometimes build side ponds next to canals with several locks in succession. These side ponds allowed water to be "put aside" rather than lost. When a lock chamber was emptied to lower a boat to the next level, paddles were opened to divert the water into an adjacent side pond.

Over time, the water evaporated to form the smaller, brinier Owens Lake. Indigenous Paiute people call the Owens Valley Payahuunadü, 'the land of the flowing water'. Today, Owens Lake is a 'Dusty Vestige of the Old West', as NASA described a photograph of the lake taken from space.

They're special on a world stage, 85% of chalk streams are in England. They're wonderful habitats, they're great for people as well, people really enjoy them, whether it's areas like this where you can find kingfishers and grey wagtails and it's just a unique resource that we really should steward properly.

Lake Superior was named the cleanest in the country thanks to its oxygen rich, clear water and low mineral content, according to a study by Fishbox, a fishing forecast platform. Lake Superior, which flows into Michigan, Minnesota, and Wisconsin, is also renowned for its fishing: ice fishing in the winter and summer catches that include bass, salmon, trout, and walleye.

The Okefenokee Swamp is not only one of America's most important ecosystems, but also the largest blackwater swamp in North America. Its vast stretches are home to several endangered species, like the indigo snake and the wood stork.

The three-part docudrama Dirty Business, which started on Channel 4 on Monday and concluded midweek, has made the notion of going into the sea in the UK terrifying and unlike Jaws, this story is real. It is an example of what good drama can do that even the best reporting can't quite achieve.

Wildlife populations are in decline. Recreation sites are crowded and often underfunded. Wildfires are larger, more destructive and harder to control. Climate change is reshaping natural systems, from ocean fisheries to mountain snowpacks, faster than institutions can respond. At the same time, communities are being asked to host new energy projects, transmission lines and mineral development - often without clear processes, adequate resources or trust that decisions are being made in the public interest.

Western water law is based on the prior appropriation doctrine, which gives the first entity to make "beneficial use" of water the right to keep on using that amount, even if that means that upstream "junior" users' spigots will get shut off. By the early 1900s, a rapidly growing California was enthusiastically diverting the Colorado River, with huge irrigation districts gobbling up the senior water rights.

The question of how to protect fish and the ecological health of rivers that feed California's largest estuary is generating heated debate in a series of hearings in Sacramento, as state officials try to gain support for a plan that has been years in the making. "I am passionate that this is the pathway to recover fish," said state Natural Resources Secretary Wade Crowfoot. "This is the paradigm we need: collaborative, adaptive management versus conflict and litigation."

Biodiversity loss is continuing at an unprecedented rate, with species becoming extinct at between 100 and 1,000 times the average pre-human, or 'background', rate. Human activities are the main cause. Although there are hundreds of local, regional and international initiatives to conserve and sustainably use species and ecosystems, many conservation scientists worry that measures such as interventions to conserve individual species or incentives to create protected areas are not supported by strong evidence from research.