Eyes on the Bay - Status and Trends
Status and Trends information is calculated from data collected as part of our Chesapeake Bay Water and Habitat Quality Monitoring Program. A detailed description of our water quality status and trends methods and parameters can be found on our Status and Trends Methods page.
- Status: measure of current condition (2020-2024) at a station based on scientifically-established threshold values determined for tidal water quality based on the salinity zone; non-tidal water quality is not assessed for current condition. Based on this comparison, the station is given a ranking of "good," "fair," or "poor."
- Trend: measure of how the system has been changing over time, either improving or degrading. Trends are flow-adjusted, and represent data from 1999 to 2024.
Results for Maryland's non-tidal station trend analysis can be viewed in our MD DNR Core/Trend Results Through 2024 (opens in a new tab). Earlier reports are in our publications database (opens in a new tab), and can be found using the search terms of 'report' and 'non-tidal'. Additionally, archived reports on the health of Chesapeake Bay tributaries can be found on our Tributary Water Quality and Habitat Assessments page.
