[PGR88]

One early theory that has not been ruled out is whether high levels of toxic algae detected in the Merced River played a role.

This really falls in to "Act of God" territory.

[ProtectOurFreedom]

We’ve had quite a few toxic algae blooms here in North Idaho this summer. There were warnings for three lakes just about ten days ago, too. Low water levels, high air temperature, and high water temperature were big factors.