by Stephanie Smith
May 04, 2016
Improvements in water clarity helped waterways on the Chesapeake Bay’s Eastern Shore score higher grades on Midshore Riverkeeper Conservancy’s sixth annual report card.
Of the sixteen rivers and streams tracked by the Midshore Riverkeeper Conservancy, fifteen of the waterways either improved or maintained the same grade from the previous year. Increased water clarity—in part caused by decreased precipitation—helped the Choptank maintain its “B-” grade from 2014. Eastern Bay and the surrounding creeks showed some of the best water quality recorded, all scoring “B” grades or higher.
According to the report, continued stormwater and agricultural runoff are slowing the recovery of water quality in the area. The Wye River continues to struggle—earning a “C” grade overall—with phosphorus pollution in the “D” to “D-” range.
Grades are based on data from more than 100 sampling sites, where volunteers test for water clarity, dissolved oxygen, nutrients and chloropyll a. The Midshore Riverkeeper Conservancy also tracks water temperature, pH, salinity and bacteria levels.