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Map: Long-Term Trend in Flow-Adjusted Total Phosphorus Concentration, 1985-2012

Long Term Trend: Seventy-three percent of long-term stream monitoring sites in the Chesapeake Bay Watershed show improving flow-adjusted concentrations of phosphorus. Between 1985 and 2012: - 22 out of 30 sites show improving flow-adjusted trends for phosphorus concentrations, - 4 sites show degrading trends, and - 4 sites show small changes that are not statistically significant.

Author: USGS

Date created: Jan 02 2014 / Download ( 399.05 KB )

Long-Term Trend in Flow-Adjusted Total Phosphorus Concentration, 1985-2012
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