Take the place where I fished this morning, for example.
It’s in a valley and very close to the spring from which it rises.
Shallow, narrow and clear at the best of times, it reduces to hardly a trickle when the rain isn’t forthcoming.
The fish also switch off as well.
However, I’ve been wanting to go back, and with some overnight rain I thought that’s enough to freshen things up and bring the fish on the feed.