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When droughts lower water levels enough to impair navigation, the U.S. Army Corps of Engineers releases water from the upstream dams, making less water available to South Dakota. [2] A South Dakota board is mulling increased water pumping rights on the James River, which since the late 1990s has seen close to a 300 percent higher annual flow.
Lake Poinsett is one of the largest lakes in the state of South Dakota. The lake is located northeast of the town of Arlington, South Dakota. It has the name of the U. S. Secretary of War, Joel Poinsett. [2] In 1838, the area was first visited by the expedition of Joseph Nicollet and John Fremont, who camped on the lake's north shore. Poinsett ...
U.S. Route 81 passes through the CDP along the western shore of the lake and leads north 24 miles (39 km) to Watertown and south 13 miles (21 km) to Arlington. According to the United States Census Bureau , the Lake Poinsett CDP has a total area of 17.8 square miles (46.0 km 2 ), of which 5.2 square miles (13.5 km 2 ) is land and 12.5 square ...
The contribution of these glaciers to global sea levels has already accelerated since the year 2000. The Thwaites Glacier now accounts for 4% of global sea level rise. [111] [113] [114] It could start to lose even more ice if the Thwaites Ice Shelf fails and would no longer stabilize it, which could potentially occur in mid-2020s. [115]
Global map of low and declining oxygen levels in the open ocean and coastal waters. The map indicates coastal sites where anthropogenic nutrients have resulted in oxygen declines to less than 2 mg L –1 (red dots), as well as ocean oxygen minimum zones at 300 metres (blue shaded regions). [55]
There is now ample evidence that greater hydrologic variability and climate change have had a profound impact on the water sector, and will continue to do so. This will show up in the hydrologic cycle, water availability, water demand, and water allocation at the global, regional, basin, and local levels. [54]
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As of 2021 tipping points are considered to have significant probability at today's warming level of just over 1 °C (1.8 °F), with high probability above 2 °C (3.6 °F) of global warming. [5] Some tipping points may be close to being crossed or have already been crossed, like those of the ice sheets in West Antarctic and Greenland, warm ...