Entomologists classify it differently depending on where they
are located. For the excessively curious, if you are in England
you are talking about the Rithrogena Germanica, if you are on
the Battenkill River in Vermont you are talking about the
Stenonema Vicarium and if you are on the Yakima River in
Washington you are talking about the Rhithrogena morrisoni.
Whatever the entomologists call it, fly fisherman call it the
March Brown. Hatching as early as February or as late as June,
depending on the location and the severity of the particular
winter, it is a big brown mayfly hatch that awakens the senses
of trout, and rekindles the trout fly fisher with their passion.
No other mayfly can be quite so anticipated as the March Brown.
The first major hatch of the spring season, it signals the end
of winter to a fly angler, as much as the coming of a local
Hickory Farms signals Christmas. The March Brown is one of the
oldest patterns out there, around since the beginning of fly
fishing. So it has been that generations of fly angler’s have
long awaited the dawning of spring, by designing the dry fly
pattern to fool the newly awakened trout.
Nymphs:
The March Brown Nymph belongs in the clinger family of mayfly
nymphs. They are found in faster riffles, and can make for great
sub-surface fishing in the early stages of the hatch. There is a
March Brown mayfly, that doubles as a great searching pattern as
well. Also popular for the March Brown hatch is the Gold Rib’s
Hare’s Ear, and Soft Hackle’s are effective as emerger’s in the
surface film. As mentioned above the March Brown is fairly good
sized, use 12-14 nymphs.
Adults:
March Brown’s tend to hatch early afternoon, which is nice,
since early spring weather can be the most brutal fishing
weather of the year. By afternoon the anxious fly fisherman
stands a better chance of not being froze off the water. Spinner
falls happen right at dusk, and usually occur over fast water. A
popular technique has the fly fisher looking downstream for a
back eddy or pool that will hold a congregation of March Brown
spinners. This often will result in the best March Brown fishing
of the season.
The Fishing:
Despite their winter hiatus from active feeding trout seem to
emerge in Spring a little hesitant. And often times they may be
uncharacteristically selective. Since March Brown’s are in
faster water, it might be difficult to get a read on what the
trout are actually doing, if anything. If unsure I usually begin
with a soft hackle Hare’s Ear, right below the surface and see
if fish are hitting the emerger. If no action there I will then
sink the fly or switch to a Beadhead Hare’s Ear. While always
looking for some surface action.
When it does start up, be prepared it can be short-lived but
well worth the effort. Especially early afternoon. And then for
the intrepid line up your pool or back eddy for the very late
spinner fall.
Ahh, at last Spring has arrived!
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