Click on the markers over the map for complete water quality information at the selected site. After clicking a marker, you can return the map to its default view by clicking on “Reset View” on the top left.
Types of water quality information available:
SAMPLES
Results of the latest sample collected by CARICOOS and/or partners. Values show the Most Probable Number (MPN) of Colony-Forming Units (CFU) of Enterococcus in 100 ml of seawater.
NOWCAST
Our best estimate of real-time beach water quality conditions. Data is presented as a percent chance of Enterococcus concentrations below the EPA-approved level, better known as the Beach Action Value (BAV, 70 MPN CFU/100 ml).
RATINGS
Our beach rating is based on the previous three months of test results at each site. Data is presented as a percentage of samples that were below the BAV during the three-month period.
HISTORIC DATA GRAPH
An interactive graph showing the the entire history of water quality results at each site.
Surfrider Historic Table
INSTRUCTIONS
Point to any bar on the Graph to view details for each Measurement.
Green bars represent Measurements under the BAV while yellow bars represent Measurements above the BAV.
BAV or Beach Action Value is defined as 70 MPN CFU/100 ml and is represented by the red dashed line.
Use the Graph Menu to view in Full Screen Mode, print the Graph or download an image of the Graph.
DATE RANGE
The Date Range is defined by the Start Date and the End Date of the data show on the graph.
By default, The Date Range is set to View All, which means that the Start Date is the earliest measurement and the End Date is the most recent measurement for the selected location.
The Date Range can be modified to show only the time period that is of interest.
Methods to select the date range:
1. Zoom
Use the Zoom values to change the date range to 1, 3, 6 or 12 months before the currently selected End Date.
2. Calendars
You can use the Calendars to specify the Start and the End Dates for the Date Range.
3. Resizing Handles in the scrollbar
Move the left Handle to change the Start Date or move the right Handle to change the End Date.
4. Horizontal Scrollbar
Drag the scrollbar left or right to change the Start and End Dates simultaneously while keeping the Date Range the same.
Please use discretion when interpreting beach water quality data, as some of it may be up to two weeks old.
Enterococci levels in seawater depend on several factors, and may change in a matter of hours to days. This tool shall not be used as a warning system.
