Crown Beach (Alameda Co) - Crown Crab Cove is a saltwater beach in Alameda County, California. Across 982 bacteria samples collected between 2022 and 2025 at nearby monitoring stations, it earns a Beach Safety Grade of C — Fair.
About 9% of samples at Crown Beach (Alameda Co) - Crown Crab Cove exceeded the EPA Beach Action Value of 104 CFU/100 mL for Enterococcus — the threshold at which water managers typically post a swimming advisory. In practice that means the safe-swimming limit was sometimes crossed here over the monitored period. Bacteria samples occasionally exceed the safe-swimming threshold — check the latest advisory before swimming.
Crown Beach (Alameda Co) - Crown Crab Cove was not under a swimming advisory in the most recent EPA snapshot. Conditions can change quickly after heavy rain or high runoff, so it's still worth checking the current advisory the day you go.