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Long-Term Trends for Secchi Disc Depth in the Chesapeake Bay: 1999-2013

Long-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. Secchi Disk Depth observations (a measure of water clarity) are increasing/improving significantly at 2 stations, possibly increasing at 2 stations, decreasing/degrading significantly at 28 stations, and possibly decreasing at 14 stations.

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