The health of the Chesapeake Bay is getting a better grade in an annual environmental report card.
The University of Maryland Center for Environmental Science on Tuesday gave the health of the nation's largest estuary a C grade for 2020.
That's up from a C-minus in 2019. Individual indicators of bay health had mixed results in 2020, but the report says the overall bay-wide trend continues to improve.
The report says seven out of 15 regions showed significantly improving health trends.
Dissolved oxygen and total nitrogen scores improved, while chlorophyll a and total phosphorus scores declined.