Eyes on the Bay Home

Thank you for visiting Eyes on the Bay, your home for Maryland tidal water quality data and information. We hope that our data search and download pages will be useful tools. The map below displays all the stations where we collect water quality data, as well as partner stations.

Notice: An accessible data table is available for the information displayed on this map.


       Eyes on the Bay Water Quality Data:

Installation of a continuous monitoring sonde at National Aquarium in Baltimore

Continuous Monitoring

Water quality data measured every 15 minutes at sites around Maryland since 2001.
Spatial Water Quality Data Map

Surface Mapping

High frequency spatial data collected monthly in Maryland bays and rivers.
Research vessel R/V Kerhin

Long-term Monitoring

Tidal and non-tidal data collected monthly since 1985 throughout Maryland.
R/V Kerhin leaving Solomons


       Eyes on the Bay 'Data Bytes':

January 21, 2026


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July 27, 2023

Status and Trends Data and Maps Updated Through 2022 

https://eyesonthebay.dnr.maryland.gov/eyesonthebay/statustrends.cfm




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March 28, 2023

 Follow the Maryland Water Monitoring Council's Facebook page for information on their annual conference, job opportunities and more.

https://www.facebook.com/MDWaterMonitoring




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   View Data Bytes Archive >>