Why Do Some Rivers Hold Big Trout?

I fished for two decades before I finally realized that not every river, not every creek or stream has big fish. For most of my early days of fishing, I thought there was a different class of fish in some of my favorite waters that I simply never encountered. And I liked to think that if I fished certain ways at certain times, I would finally catch those fish. But many years later, after more experience and after finally fishing all of the ways that are supposed to help you find the biggest ...