Click a Location on the Map to View Data!





  • Move the map in a desired direction by using the arrow keys in the upper left map corner, or by holding down the left mouse key and moving your mouse in a desired direction.


  • Zoom to a Volunteer Monitoring Site using the + - keys in the upper left map corner. Reset the map to its original zoom display by clicking the button, Reset Map Zoom.



  • Click on a red balloon icon within the map to view graphically displayed summary data for a particular Volunteer Monitoring Site. An information window appears which reflects the site label as well as the dates for the first and last recorded live oyster spat counts.


  • In the legend below the graph, check the desired fouling organisms or environmental variables (i.e. salinity) to display on the bar graph.







Water Temperature
Oyster Spat - Live
Oyster Spat - Scar
Barnacle - Live
Barnacle - Dead
Barnacle - Scar


Slipper Shell
Atlantic Oyster Drill



  • Each fouling organism and environmental variable has an associated color code displayed in the legend above the bar graph. The bar colors in the graph are a shade lighter than the original legend colors to better display the combination of organisms and environmental variables.


  • Zoom in on the bar graph by highlighting the desired date range. Reset the graph to its original zoom display by clicking the button, Reset Graph Zoom.


  • Data displayed for each fouling organism represents the average number of organisms counted on a single tile (combining smooth and rough surfaces) from all six tiles placed on a spat rack. One of two rack sets is counted after an approximate 42 day period in the field.

    The average counts of each organism are stacked and represented as a single bar. The height of the bar represents the average total number of organisms per tile for a rack deploy period.


  • Data displayed for each environmental variable represents the monthly minimum and maximum range from twice weekly measurements.


  • Move your mouse over the desired data display in the graph. An information window appears which reflects the average monthly number for each fouling organism and the monthly minimum and maximum number range for each environmental variable.

  • Click here for more information on sampling protocol.


Summary Data Last Updated through: 03/31/2013