Quote Originally Posted by Uncle Jesse View Post
Because when it rains here in the summer it typically comes with lightning I leave, but I would think if there are trees along the banks a drowned ant pattern might become a better pattern, along with inch worms and bettles. A little wind might improve the effectiveness of grasshopper patterns. More than a foot under the water I doubt anyone much notices the rain other than a loss of light.
+1 with Jesse.

Beetle downstream from overhanging trees or a floating beetle with a sunken ant.

Also agree that a rain makes surface flies much easier to fish. I took a beginner to fish a difficult river. It was raining and the fish were push overs. They seemed oblivious to sloppy casting and drag. He didn't know how fortunate he was that it was raining.