What you're hearing might be related to something in store for the end of September. For the purpose of scientific studies, Idaho Power is reducing the outflow from Hells Canyon Dam to 5,000 cfs Sept. 27-30. That will leave between 9,000-10,000 in lower Snake above Lewiston. Considering the Snake at Heller Bar (mouth of Grand Ronde) usually runs around 20,000 this time of year, it's going to be reeeaaallly low.