Earlier in May, NASA published images of Clearlake from space, showing algae blooms covering a good portion of the lake. Clearlake is naturally rich with algae and other plant life, including blue-green algae which can be dangerous to humans and pets. The county has engaged a company to help clear some of the vegetation, at a close of just over $262,000. The county also samples water monthly to check for blue-green algae and other plants.