Fishing the Blue Wing Olive Hatches - East Branch of the Croton River

The Resident Heron

Last Saturday we fished under the bridge at the junction of Route 22 and East Main Street in Brewster.
There were a good number of Blue Wing Olive Mayfly Duns drifting in the pool under the bridge and many fishes were rising for them.
I caught two rainbows and one brown.

A Groundhog ??

My wife tried nymphing in the rapid water upstream of the bridge,
but she didn't even get one bite, unlike two weeks ago.
I guess every fish in the rapid went down to the pool to feed on  BWO Duns.  I wonder if such a thing can happen.

We fished in the Trestle Pool in the early evening.
We saw a lot of BWO Duns on the water and fishes were rising quietly on the other side of the stream under some hanging trees.
I continued using the hackle flies, but it didn't work well here.
So we changed to a CDC dun pattern.  It fooled more fishes.

So far we caught only browns in the Trestle pool.  Though they were not large, they were a joy to catch as they were healthy and energetic.

On our way to Brewster, we stopped by The Bedford Sportsman fly shop to buy a few things.
I asked about how were Trico hatches.
Many years ago I had such a great fun fishing in the Trestle Pool during the Trico spinner fall.
The store owner told me that Trico hatches were going on at this time but they had become less in volume in recent years than they used to be.  Let me find out.