Brackish water is an aqueous solution characterized by intermediate salinity between freshwater and seawater, typically ranging from about 0.5 to 30 practical salinity units (PSU), corresponding roughly to 0.5–30 g of dissolved salts per liter. Its ionic composition is usually dominated by sodium, chloride, magnesium, sulfate, and calcium ions, though proportions can deviate from standard seawater due to fluvial inputs, groundwater discharge, or anthropogenic contamination. Brackish water commonly occurs in estuaries, coastal aquifers, and mixing zones, and its physicochemical properties, including density, osmotic pressure, and electrical conductivity, strongly influence geochemical reactions, corrosion behavior, membrane separation performance, and biological tolerance limits in environmental and engineering contexts.
An international team featuring faculty at Binghamton University, State University of New York has drilled the longest ever sediment core from under an ice sheet, providing a record stretching back millions of years that ...
Earth Sciences
Feb 17, 2026
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In the summer of 2022, toxins produced by the brackish-water algae Prymnesium parvum killed about 1,000 metric tons of fish, snails, and mussels in the River Oder. In a study published in the journal Ecotoxicology and Environmental ...
Plants & Animals
Oct 2, 2025
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Many people view European cisco roe as a delicacy. A new study has shown that there are different types of European cisco in Swedish waters that are each genetically adapted to fresh, saline or brackish water. Genetics also ...
Plants & Animals
Sep 22, 2025
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How did freshened water end up beneath the New England Shelf miles offshore, how long has it been there, and how much of it exists?
Earth Sciences
Aug 25, 2025
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