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NOS National Status and Trends (NST)
browse graphic The Center for Coastal Monitoring and Assessment (CCMA) has maintained NOAA's National Status and Trends (NST) effort since 1984. NST is comprised of two nationwide programs, Mussel Watch and Bioeffects, that are designed to describe the current status of, and detect changes in, the environmental quality of our Nation's estuarine and coastal waters through environmental monitoring, assessment and related research.