The warning says this: "Upstream of the Agassiz Bridge this problem was not observed." The poster says that Wards and Leveritt pond are included. I couldn't post a comment, but someone didn't get it right.

anon-thanks for pointing this out. the person who sent me the original email specifically said that it affected wards pond, etc. I did not know where the Agassiz bridge was located until now. Glad to hear it is not a problem in J.P. I will correct it in my blog.

It's "those algae," not "that algae."