Algal blooms, typically consisting of cyanobacteria which can produce harmful toxins, are a recurring problem on lakes around the world.  Although Alberta has long-term sampling programs on selected lakes, monitoring is limited in time and space. Satellite remote sensing offers a way to monitor cyanobacteria blooms across the entire ice-free season and track spatial patterns of bloom development, dynamics, and spread across lakes. The Alberta Biodiversity Monitoring Institute (ABMI), Alberta Lake Management Society (ALMS), and Dr. Rolf Vinebrooke (University of Alberta), assisted by many partners including lake community associations, Alberta government agencies, and Environment and Climate Change Canada (ECCC), are developing an operational system to monitor Alberta lakes in near-real time with Sentinel-2 imagery. The project is also conducting an analysis of historic trends using longer-running Landsat satellite systems.  Water samples are being collected on six Alberta lakes - Pigeon, Sylvan, Wabamun, Nakamun, Lac La Biche, and Ethel -  at times concurrent with satellite overpass, then processed for chlorophyll-a concentrations to provide training and validation data for a satellite-based spectral model of this bloom indicator. We are using Google Earth Engine to collect and process the imagery, and to visualize the results for the public and stakeholders in a free, online app.