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Summary
DescriptionLake Valencia, Venezuela.jpg
Lake Valencia (Lago de Valencia) is located in north-central Venezuela, and is the largest freshwater lake in the country.
The lake was formed approximately 2-3 million years ago due to faulting and subsequent damming of the Valencia River. The lake has been completely dry during several discrete periods of its geologic history. Since 1976 Lake Valencia water levels have risen due to diversion of water from neighboring watersheds—it currently acts as a reservoir for the surrounding urban centers (such as Maracay).
The vivid green algal blooms present in this image result from a continual influx of untreated wastewater from the surrounding urban, agricultural, and industrial land uses. This contributes to ongoing eutrophication, contamination, and salinization of the lake. Despite its picturesque location between the Cordillera de la Costa to the north and the Serrania del Interior to the south, Lake Valencia’s poor water quality limits opportunities for tourism and recreational activities.
Astronaut photograph ISS010-E-5194 was acquired October 27, 2004 with a Kodak K-760C digital camera with a 180 mm lens and is provided by the ISS Crew Earth Observations experiment and the Image Science & Analysis Group, Johnson Space Center. The International Space Station Program supports the laboratory to help astronauts take pictures of Earth that will be of the greatest value to scientists and the public, and to make those images freely available on the Internet. Additional images taken by astronauts and cosmonauts can be viewed at the NASA/JSC Gateway to Astronaut Photography of Earth.
This image or video was catalogued by one of the centers of the United States National Aeronautics and Space Administration (NASA) under Photo ID: ISS010-E-5194.
This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required.See Commons:Licensing.
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Licensing
Public domainPublic domainfalsefalse
This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
Warnings:
Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221.
The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain.
Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI.[1] See also {{PD-Hubble}} and {{Cc-Hubble}}.
The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2]
Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3]
The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."
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