The Lewis River Merwin Dam: harvest, habitat, hatcheries and hydro

On Tuesday, July 23, about 30 HydroVision attendees had to privilege of touring the 136-MW Lewis River hydropower plant located at the Merwin Dam in Ariel, Washington. The dam was constructed in 1931 and has four penstocks, which today feed three turbines. The turbines were installed in 1931, 1949 and 1958, respectively. The fourth penstock, which was the focus of much of the tour, is for fish passage.

source https://www.renewableenergyworld.com/articles/2019/07/the-lewis-river-merwin-dam-harvest-habitat-hatcheries-and-hydro.html