California’s record snowpack is melting into significant runoff this summer, filling the state’s lakes and ponds with cold, fresh water. These flows usually help prevent blue-green algae blooms, which form in waterways and are toxic to humans and can be deadly to pets. But since mid-spring, there’s been reports of the dangerous — and stinky — algae blooms across the state. “It’s interesting — and maybe a bit surprising — that we do see these blooms even after these big winters,” said Keith Bouma-Gregson, manager of the California Freshwater Harmful Algal Blooms Program.