Protecting and Preserving Black Lake and the Surrounding Watershed

USGS Report on HABs Samplings

August 13, 2020

Ian Collecting Lake Water Samples

This is the latest report from the USGS on HABs sampling’s.

Ian will be out again this week sampling, so if you see him, please say HI! So far the samples we’ve collected at Black Lake have shown no detectable toxins, so that is great news. I’ve looked at a few of the samples under the microscope, and for the most part they have been filamentous green algae. The good news is that green algae do not produce toxins. They are, unfortunately still unsightly and can cause a pungent order when decomposing. Hopefully the slightly cooler temps will keep any additional blooms at bay this year, but please let us know if you see the tell-tale signs such as the teal “paint spill” or what looks like little green hairs in the water. I’ve attached a few photos to give you an idea of some of the blooms that are very dangerous and to let us know if you see them.