Often mayflies can be found on houses near the river.  This one molted from a dun into a spinner on the outside of our kitchen window.

Any lit dwelling near the river can attract a lot of mayflies at night.  A good way to determine what's hatching is to visit a gas station (or anything else with bright lights) close to the river early in the morning. From the West Fork of the Chippewa River in Wisconsin.
See many more fly fishing, trout stream, and stream insect pictures on the Troutnut.com homepage and discussion forum.

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Often mayflies can be found on houses near the river. This one molted from a dun into a spinner on the outside of our kitchen window.

Any lit dwelling near the river can attract a lot of mayflies at night. A good way to determine what's hatching is to visit a gas station (or anything else with bright lights) close to the river early in the morning.

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