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Map: Chesapeake Bay watershed nitrogen long-term flow-adjusted concentration trends 1985 - 2011

Changes in nitrogen concentrations have been determined for the period 1985-2011 at 31 stream sites in the Chesapeake Bay watershed. Of these, the majority of the flow-adjusted trends were improving, with 21 sites having improving trends, 3 sites had degrading trends, and 7 sites the trends were not statistically significant.

Author: USGS

Date created: Jan 02 2013 / Download ( 961.9 KB )

Chesapeake Bay watershed nitrogen long-term flow-adjusted concentration trends 1985 - 2011
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