Toxic algae appears to be surging again in Utah Lake, prompting the Utah County Health Department to issue health advisories for specific portions of the lake. Warning signs have been posted at both Sandy Beach and the Saratoga Springs Marina. Lincoln Beach â which never really opened after Julyâs massive algal bloom, according to health department spokeswoman Aislynn Tolman-Hill â remains closed. Box Lake also acquired warning signs this afternoon due to increasingly high levels of toxic algae ...