MonitorTheBay is a web-based user interactive water quality monitoring system application for the Chesapeake Bay. With the ability to zoom in and out and virtually navigate the Bay by simply dragging, the monitoring system allows users to view the health status of the Bay. A click on the water will read out the turbidity level and chlorophyll concentration at that specific location. With its ease of use, this application suits a wide range of audiences and will be useful in educating the public. This app can be accessed at using Internet Explorer. ………………………………………………………………………………………………………………… The Chesapeake Bay is the largest estuary in North America. Its drainage basin of 64,200 square miles encompasses six states and the District of Colombia. The Bay is a complex ecosystem that serves as a habitat for a diverse group of plants and animals. Known especially for its blue crabs and Eastern oysters, the Bay, along with its rivers, wetlands, and forests, is a popular tourist attraction. In recent decades, however, the Bay has experienced deteriorating environmental conditions because of increased nutrient inflow and urban runoff. On May 12, 2009, President Obama signed the Chesapeake Bay Restoration and Protection Executive Order 13508. The Executive Order recognizes the Chesapeake Bay as a national treasure and calls on the federal government to lead a renewed effort to restore its health. The Executive Order defines several priorities, among which is to “strengthen scientific support for decision-making to restore the Chesapeake Bayand its watershed, including expanded environmental research and monitoring and observing systems” It was my vision to address this national concern. I developed statistically significant algorithms correlating in-situ water quality parameters data, obtained from the Chesapeake Bay Program which consists of the EPA and local states, and Landsat 5 Thematic Mapper radiation data, obtained from the USGS, through multivariate regression analysis. These algorithms were used to produce still image maps that provide continuous spatial coverage for the entire Chesapeake Bay region. Using PHP and JavaScript, these still images were transformed into a web-based, user-interactive, novel monitoring system application for the Chesapeake Bay’s water quality which can be found at This monitoring system has numerous features. It allows a user to virtually navigate the Bay by simply clicking and dragging, and it displays the scale and cursor position in both lat/lon and UTM coordinates. The monitoring system allows a user to zoom in to a location at a fine, 30 meter spatial resolution. On the top control bar, the user can change between dates, toggle between the two water quality parameters, hide or show nearby city names, and display the stations I used to create the algorithms. Every station is represented by a red dot and can be clicked on to view its information. There is also the option to view the historical data for a specific station, giving the user an idea of how the turbidity level or chlorophyll concentration has fluctuated at that specific location since 1984. Most importantly, every water pixel is clickable. A click on a water pixel will result in a chlorophyll concentration or turbidity level (depending on the set parameter) value reading for that specific location, displayed on the top control bar. Since it is not difficult to keep it updated and maintained, and with its ease of use, I believe the developed monitoring system application would be useful to water quality managers, policy makers, and concerned citizens. This app 

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