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Eyes on the Bay Data Information Harbor:

The information and tools on the following pages explain our data program, and should help you navigate to the data type best suited for your data needs:

Data Types Overview:

The table on our Data Types Overview page provides comparative information to help you determine what type of Eyes on the Bay data best suits your needs, what parameters are collected for each data type, and explains what data are available for download. Data Types table

Parameters Overview:

Our Monitoring Explained page provides information about the water quality parameters that we measure, and explanations of why monitoring each parameter is important to determining Chesapeake Bay health.

Main Station Map:

Main Station Map Our interactive Main Station Map displays all the stations where we collect water quality data, as well as partner stations.Use this map to explore the stations we are currently sampling, as well as to view stations from previous years. You can also toggle different data types on or off. Clicking on stations also shows snapshots of data, and links you to data downloads and charts.

Continuous Monitoring:

1. Continuous Monitoring Station Timeline:

This interactive timeline graphic shows years of data available for all Continuous Monitoring stations. This tool can help when choosing sites of interest, and for comparing years of sampling between or among stations. Site Timeline Chart

2. Continuous Monitoring Station Information Table:

You can view and download Continuous Monitoring Station Information in table form, including station coordinates and information on depth locations of water quality meter at each station. This table also includes direct links to data downloads of 'Calibration Data' from the Chesapeake Bay Program's DataHub. Station Information table

3. Continuous Monitoring Charts & Data Download:

Query for Continuous Monitoring 15-minute increment data, and choose to view your selection as a chart, download raw data, or view and download mean, minimum, and maximum values by year, month, or both. Copy the resulting URL to easily send collaborators your chart or data download.
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Want to compare conditions at two different stations? Use our Continuous Monitoring Station Comparison Chart and Data Download Tools instead.
Station Information table

Fixed Station Monthly Monitoring:

1. Fixed Station Monthly Monitoring Information Table:

You can view and download Long Term Monthly Monitoring Station Information in table form, including station coordinates and information on depth locations of water quality meter at each station. Station Information table

2. Fixed Station Monthly Monitoring Charts:

The Fixed Station charts plot current month water quality values with the historical range values and historical average (sites have been sampled at least monthly since 1985). Water quality profiles are taken, as well as nutrient, sediment and chlorophyll samples. Fixed Station charts

3. Fixed Station Monthly Monitoring Data Download:

The Fixed Station Monthly Monitoring data can be downloaded from the Chesapeake Bay Program's DataHub. These data are the backbone of the Chesapeake and Coastal Bays management and restoration efforts. They are instrumental in determining the long-term trends and current status of water quality in the region. Fixed Station charts

Data Status:

Data Status Table Our Data Status page shows an overview of the monthly status of Eyes on the Bay data submittals to the Environmental Protection Agency's Chesapeake Bay Program Data Hub for each data type. You can use this page to find out when data have been finalized and are available online.

Data Request Form:

The majority of our data is available for direct download on this site, or on the Chesapeake Bay Program Data Hub. However, if the data you need is not available at either location, then it is possible to Submit a Data Request using our online form. Please refer to the tools above to help determine what type of data, and what stations you are interested in, before requesting data. Data Request Form

Data Process:

Wondering what the steps are between when we gather the data and when it's available online? Check out this schematic of our entire Data Process, outlining the steps from sampling to data submission.

Data Processing Icon