Contour mapping is one of the best ways to visualize spatial differences in bay water quality. These maps are generated by the Environmental Protection Commission of Hillsborough County (EPC) using a spatial analysis technique in a Geographic Information Systems software package. The water quality sampling locations and data used to generate these maps includes only those collected by EPC. For more information about EPC and their program area, visit their website at http://www.epchc.org/.
Change in Water Quality over Time
The slideshow below shows Chlorophyll a
data starting with the most recent month of data and cycling through to the oldest contour map generated.
Contour maps are generated routinely for the list of parameters shown below. Select from the list below
to see the change over time.
Monthly Generated Water Quality Contour Maps
Each month new contour maps are automatically generated for the parameters listed below. You can also select a prior year to access archived maps.
The PDF documents below contain maps showing both the parameter distribution within the bays for the selected month, as well as the average monthly distribution for that parameter over the previous ten years (if available).
Filter By Year:
Contour Maps for All Available Parameters