Another troubling report. The photo was taken during a TU-led overflight with EcoFlight on September 29, 2023. The location is just upstream of Lower Granite Dam. Eric Crawford of TU is quoted in the article.
Large Snake River toxic algal bloom hasn’t happened before. NWNews (Courtney Flatt)
Algal Bloom above Lower Granite Dam (9/29/2023)
Algal Bloom above Lower Granite Dam (9/29/2023)