Big Hole Salmonfly Hatch Update

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Welll, the talk over the phone and in the shop these days consist of when are the Salmonflies going to hatch on the Big Hole.  Historically we see the Big  Hole River Salmonfly hatch start around June 10th – 15th.  I think because of a below average runoff we are having the big bugs should pop a little early this year.  Water temperatures are already climbing into the 50’s.  We just need some hot days to get the salmonflies to hatch during the night.  The key element for the bugs to start hatching is nighttime temperatures staying above 50 degrees for several nights in a row.

The Salmonfly hatch starts around Glen and works it’s way up river as the water warms.  We have had good stonefly nymph fishing from Melrose to Glen, which is a good indicator that the Salmonfly nymphs are moving closer to the banks getting ready to hatch.  We have very good clarity in the river right now and I don’t see any major bump in flows since we have already had peak runoff, unless we get big rain storms.  The Big Hole Salmonfly hatch should be a great one this year!


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