Maps
Browse through maps depicting Bay health and restoration, including pollution trends, public access sites and more.
Long-Term Trends for Surface Total Phosphorus in the Chesapeake Bay: 1999-2013
Date created: April 28, 2015Long-term trends were computed by state partners using the Seasonal Kendall non-parametric technique for annual data collected from 1999-2013. Highly significant trends are indicated with triangles and possible trends are show with colored circles. Surface total phosphorus concentrations are decreasing/improving significantly at 36 stations, possibly decreasing at 23 stations, increasing/degrading significantly at 2 stations, and possibly increasing at 6 stations.
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Long-Term Trends for Surface Orthophosphate in the Chesapeake Bay: 1999-2013
Date created: April 28, 2015Long-term trends were computed by state partners using the Seasonal Kendall non-parametric technique for annual data collected from 1999-2013. Highly significant trends are indicated with triangles and possible trends are show with colored circles. Surface Orthophosphate concentrations are decreasing/improving significantly at 29 stations, possibly decreasing at 7 stations, increasing/degrading significantly at 5 stations, and possibly increasing at 2 stations.
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Long-Term Trends for Surface Total Nitrogen in the Chesapeake Bay: 1999-2013
Date created: April 28, 2015Long-term trends were computed by state partners using the Seasonal Kendall non-parametric technique for annual data collected from 1999-2013. Highly significant trends are indicated with triangles and possible trends are show with colored circles. Surface total nitrogen concentrations are decreasing/improving significantly at 41 stations, possibly decreasing at 16 stations, increasing/degrading significantly at 1 station, and possibly increasing at 1 station.
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Long-Term Trends for Surface Chlorophyll-a in the Chesapeake Bay: 1999-2013
Date created: April 28, 2015Long-term trends were computed by state partners using the Seasonal Kendall non-parametric technique for annual data collected from 1999-2013. Highly significant trends are indicated with triangles and possible trends are show with colored circles. Surface chlorophyll-a concentrations are decreasing/improving significantly at 2 stations, possibly decreasing at 7 stations, increasing/degrading significantly at 25 stations, and possibly increasing at 16 stations.
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