Harmful algal bloom warnings issued for portions of Utah Lake Utah Department Of Environmental Quality. File Photo: An algal bloom at Utah Lake and last updated 2021-07-12 18:12:06-04 UTAH LAKE â The Utah County Health Department has issued a harmful algal bloom (HAB) warning for a few areas of Utah Lake. The department announced Monday afternoon that American Fork Marina, Lindon Marina, and Lincoln Beach had reached "warning" levels of algal blooms. The marinas are still open for personal watercraft access, but the health department warns that water recreation in the Lincoln Beach area should be avoided. Algae occurs naturally in bodies of water, but large amonts of cyanobacteria can create HABs -- especially in the summer.