I keep a fishing logbook. I include info on water levels, temp, date, fish I saw, ect. It helps me remember when the fish (usually steelies) were present in a certain stretch of river and when they weren't. This year, I'm going back to my 98-99 log to see what high water holes fished well. One of the most important and valuable things in my logs are the milage markers for different steelhead lies along river access roads. I can find lots of good spots before first light on rivers I haven't fished in years. My current logbook is a hardback with lined paper about 6" x 9" I found at Fred Meyer. It has a nice watercolor of three trout on the front.