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| The USGS monitored a broad suite of constituents at the New and Alamo
River outlets to the Salton Sea monthly for a period of 1 year in 1988-89.
Monitoring on the Alamo River at Drop 3, a few miles upstream from the rivers
outlet, since about 1970 shows that the 1988-89 period used in subsequent
calculations is representative of longer term concentrations for many constituents.
(Only data for nitrogen, which exhibits much greater variation than most
constituents, are illustrated herein.) Nitrogen delivered to the Salton Sea is mostly
in the form of nitrate, although virtually all of the nitrogen in the Salton
Sea itself consists of the reduced species, ammonia and organic nitrogen. |
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