When visiting the Columbia River Gorge photographing the waterfalls and other beautiful scenes from the the area are a must. Since hiking is the main transportation mode to reach these photogenic areas, weight and bulk was a concern. I want to share with you what I used and didn't use. Save yourself a lot of trouble and keep reading.
I took a Sony a7Rii with the Batis 18mm and the Sony a7 with Batis 85mm. Extremes. The 18mm was perfect for all but a few waterfalls. The 85mm was awesome for the few waterfalls the 18mm didn't cover and I used the 85mm for the Gorge shots in Oneota Falls and looking down the actual Columbia River Gorge. I also used the 85mm for family candid shots.
I took a 25mm lens and wish I had left it behind. The main draw from the Sony bodies were picture quality and light weight. The reason for the Batis lenses were photo quality and light weight. The downside to the Batis lenses are on the large size physically. In the end, weight won out and I was pleased with my decision to take them.
You do not want to be uncoupling lenses from camera bodies once you enter the gorge. With all the fog, spray, etc., you don't want to take a chance getting your sensor dirty. This is why I carried two cameras. Plus, I didn't want to travel across the country and have a camera fail during a hike and ruin my hard work for the day. You are close to Portland but they don't deliver to the trail while you are standing in snow melt water getting that memory.