There is a Harmful Algal Bloom danger advisory at Contra Loma Reservoir at Regional Park. The advice: Stay out of the water. Keep pets out of the water, and do not let them eat scum from the shore. Do not eat shellfish from the reservoir.
There are three cautions – same advice applies – in Discovery Bay: on Monterey Court, at Clipper Drive and Reef Court, and in Seal Bay on Discovery Bay Boulevard.
This information may change after the release of this notice. Check for updated information at the HAB Reports Map.