Alberta's nutrient-rich lakes and reservoirs often experience blooms of cyanobacteria (a.k.a. blue-green algae) during summer and early fall. Common species of cyanobacteria can produce potent liver and/or nerve toxins. Microcystins (MCYSTs) are thought to be the most common toxins produced by cyanobacteria and exert toxicity by severely damaging liver structure and function. Cyanotoxin monitoring was incorporated into Alberta's Integrated Lake and Reservoir Monitoring Program in 2005 with the goal of determining the prevalence of MCYST in Alberta. In addition, the occurrence of multiple MCYST analogues, a potent neurotoxin anatoxin-a (ATX-a), and a potentially toxic amino acid, beta-N-methylamino-L-alanine (BMAA), reported to be produced by cyanobacteria, is investigated. This report presents status and findings of the cyanotoxin monitoring program from 2005-2008.--Document.