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Satellite imagery over Iran from 1984 to 2014 revealing Lake Urmia's diminishing surface area. A number of natural lakes throughout the world are drying or completely dry owing to irrigation or urban use diverting inflow. [1] [2]
Many dry lakes contain shallow water during the rainy season, especially during wet years. If the layer of water is thin and is moved around the dry lake bed by wind, an exceedingly hard and smooth surface may develop. Thicker layers of water may result in a "cracked-mud" surface and teepee structure desiccation features.
Currently at an overflow level and therefore draining into the sea via the Lukuga River, but the lake level has been lower in the past, possibly as recently as 1800. Tularosa Basin and Lake Cabeza de Vaca in North America. Basin formerly much larger than at present, including the ancestral Rio Grande north of Texas, feeding a large lake area.
Falling water levels in lakes and rivers across the globe have caused great concern among climate experts, and they have also led people to stumble upon a range of newly uncovered relics, from ...
Lakes, as with other bodies of water, are part of the water cycle, the processes by which water moves around the Earth. Most lakes are freshwater and account for almost all the world's surface freshwater, but some are salt lakes with salinities even higher than that of seawater. Lakes vary significantly in surface area and volume of water.
The oceans drain approximately 83% of the land in the world. The other 17% – an area larger than the basin of the Arctic Ocean – drains to internal endorheic basins. There are also substantial areas of the world that do not "drain" in the commonly understood sense.
The lake lies at an elevation of 155 m (509 ft) below sea level, making it the lowest point of Africa. [1] The lake is characterized by two parts. The dry part of the lake, resulting from evaporation of the lake waters, is a white plain dry lake bed on the west/northwest side, which is a large expanse of salt.
In 2002, the lake was designated as a site for conservation under the Ramsar Convention. [6] [7] [8] By December 2015, the lake had completely dried up, leaving only a few marshy areas. [9] [4] [3] Despite the lake rebounding from two previous recorded drying instances, as of 2016, the lake's recovery is considered unlikely. [10]