Long-Term Trend in Flow-Adjusted Total Nitrogen Concentration, 1985-2012
- Author:
- USGS
- Date Created:
- January 2, 2014
Long Term Trend: Seventy percent of long-term stream monitoring sites in the Chesapeake Bay Watershed have improving flow-adjusted concentrations of nitrogen. Between 1985 and 2012: - 21 out of 30 sites show improving flow-adjusted trends for nitrogen concentrations, - 3 sites show degrading trends, and - 6 sites show small changes that are not statistically significant.