The departure of summer in the high country is a process that begins well before the Autumn Equinox. It may be something as small as adding an extra blanket on the bed in late August or a morning layer of thin ice on the dog’s water bowl at about the same time. At the fly shops, river guides may linger with clients for an extra hour while waiting for temperature that may not be sufficiently comfortable until well past eight a.m.
Early September brings a change for many residents of the Henry’s Fork community as shotguns and bows join fly rods as tools for a season that adds hunting to the list of opportunities for outdoor activity. With these changes comes an alteration in the rhythm of daily life as noticeably shorter days prompt a sense of urgency for mountain dwellers.
With signs of a colder season blending with the remnants of summer the pulse of all creatures seems elevated into heightened awareness that time is short before the arrival of winter. It is a rare September that does not feature a substantial snowstorm which, though always a temporary disruption, is a stark reminder that preparations must be made for the six months or so when that form of precipitation becomes standard.
As with all wildlife, trout are instinctively alert to a behavioral necessity that will determine the ability to survive during the lean months when food becomes scarce and existence is largely reliant upon fat stored prior to that precarious period.
In autumn, trout become opportunistic in a constant search for food and at times can appear almost indifferent to its identity or timing of availability. This is a time of plenty for a fly fisherman as virtually all local waters are at their best in terms of condition and productivity. Always severely tested in this regard, personal discipline for responsibility nearly evaporates during the thirty days that span my favorite month of the year.
With so much happening on the rivers and lakes of Yellowstone country, the biggest challenge in September is making a decision on where to fish on any given day. But is that such a bad problem to have?