Richard Tate

As winter advances, fly-fishermen become increasingly restless.
Most have tied enough flies for the upcoming season, and they are looking to get out on the water. Although some of them have been astream frequently, as the weather begins to moderate during February, more get the bug to hit the stream.

Autumn can provide some of the most exciting fly-fishing of the year, although very low water conditions resulting from a growing statewide drought in Pennsylvania promises to make the fishing more challenging this fall.
The cooling temperatures of streams allow trout that may have spent the summer in spring holes or upstream areas to ease back to areas they frequented earlier in the year. But as I write this, it is going to require some significant rains to raise the levels of many streams so that the trout can move around.

Fly-fishermen know that their summer outings are often limited to certain streams and stream sections that remain cold enough to host trout throughout even the hottest of weather. 
Some of these are the well-known limestone spring creeks of southern Pennsylvania, such as the renowned LeTort Spring Run and Falling Spring Branch. Tactics on these waters include nymph fishing for trout, dry-fly fishing with terrestrial insect imitations, and fishing to hatches of tricorythodes mayflies where they can still be found.