The U.S. Army Corps of Engineers is keeping water levels lower in Lake Okeechobee in Florida in hopes of not having to release water during the rainy season. (National Centers for Coastal Ocean Science) At a Glance Satellite imagery shows that blue-green algae is increasing across Florida's largest lake. Blue-green algae blooms tend to happen in warm weather when heavy rains wash nutrients into the lake. Blue-green algae is consistently appearing on Florida's Lake Okeechobee, and the chance of harmful...