When to Visually Monitor

When resources are scarce or FHABs are widespread, visual monitoring can be a cost effective way of evaluating the extent of FHABs, informing the public, and expanding knowledge of the issue. It is also  a valuable screening tool for determining additional monitoring methodologies when a bloom is expanding or changing. Visual monitoring cannot measure the presence or amount of cyanotoxins, but visual confirmation of a FHAB triggers the recommendations to post caution level advisory. In addition,  visual indicators can be used to determine where to target sampling. 

Who can Visually Monitor?

Anyone with curiosity and the ability to safely access a site can participate. All it takes is familiarizing yourself with your local waterbodies and understanding some of the common signs of a FHAB. As a water manager, you can perform recurring visual inspections and document waterbody conditions with photos and/or a field datasheet. As a citizen scientist, visual monitoring can occur while recreating in or near your favorite waterbody.

Steps to Visual Monitoring

1. Learn to identify a FHAB using the link below.

2. Choose sites to monitor on regular basis.

3. If a potential FHAB is visually identified, report the information through the FHAB Report Form. Include photos when possible.

4. If you are unsure if you are seeing a FHAB include photos with your submission for Regional Waterboard Staff to help assess.