Has the water in Denver’s Sloan’s Lake killed fish?

Sloan’s Lake in Denver has experienced toxic blue-green algae blooms that killed thousands of fish, including a 2024 die-off of at least 2,000 fish. The lake’s shallow depth and rising temperatures due to climate change contribute to algae overgrowth, which harms fish by depleting oxygen or releasing toxins. Colorado Parks and Wildlife restocked the lake with 9,500 rainbow trout after the 2024 incident.