Five Ponds -- Stillwater area
I did a round trip traverse from Wanakena to Stillwater Reservoir May 3-5, Sunday through Tuesday.
On either the first or second day there were about 5-10 black flies total, all day. The other of those days there were none at all.
On the third day, suddenly they were bad. Not the worst, not terrible, but bad. It was ~8AM, when I'd made it up to the NW side of Summit Pond, that they first caught my attention. From then on they were bad. Even in fairly open woods I wasn't going fast enough to keep ahead of them. When I finally got to the Five Ponds trail, the extra bit of speed it allowed me was enough to stay clearly ahead of them. While on the trail, when I stopped to filter or rest, they were on me. This is pretty early in the spring for BF's in this area. But Spring came quite early and has held on.
In those three days I had one unconfirmed sighting of a mosquito-like insect. That's all!
I haven't even started my hiking log report for this trip. I may post that as a TR, but for now I just wanted to make a timely BF report.
[edit: The terrain where this black fly experience took place is at 1,800' - 2,000' elevation. ]