Agriculture near Lake Nasser and the Toshka Lakes, Egypt
The Toshka Lakes (left) were created as a result of drainage from Lake Nasser (right). When the water level of the latter becomes too high, the excess is carried via canals to a depression in the Sahara Desert.
The easternmost lake was formed first, in 1998, followed by three additional lakes to the west, in 1999, and finally the westernmost lake in 2000-2001.
The levels of the lakes vary between 176 m for the one closest Lake Nasser to 144 m for the one furthest downstream.
As of as of 2006[update] the levels of the lakes were lower than in 2001, and areas of wetlands and sand dunes have formed between the former and present shorelines.
In this 2009 image, the water levels appear low, with only two large lakes visible. A minor lake downstream of the main lakes has completely dried out.
The easternmost lake has a green algal bloom, as well as some brown sediments off the southern shore. The waters of Lake Nasser also appear green with algae, particularly to the south.
An agricultural area with circular fields can be seen between Lake Nasser and the easternmost Toshka Lake.