Reports indicate that Lake Anza's status regarding swimming has changed, with some outlets stating it is open and others saying it is closed due to toxic algae. The presence of toxic algae and a squishy fern has been a recurring issue at the lake, as well as at other East Bay swim sites like Lake Temescal. The current status of Lake Anza and other affected lakes appears to be uncertain, with conflicting reports on whether they are open or closed to swimmers.