June 10, 2015
Mayflies have now been hatching for over a week on the rivers dominated by Hendrickson and Red Quill hatches. They have just about run their course though. Afternoon hatches are producing fewer bugs with less prolific lighter color mayflies now showing. There will still be some Light Cahill and March Browns around but that game will soon end.
At the end of the mayfly hatches when there are few bugs on the water and very fish showing it’s time to switch from the adult dry to a parachute style fly. Fish are less likely to go for a fly floating high and dry when there aren’t many naturals around. A parachute style fly lays flat on the surface with a better profile making it an easy tidbit that fish can easily sip. It makes a big difference in the number of fish you’ll bring to your fly.
Now everyone is patiently waiting for caddis to kick in.
They have probably already started in the smaller rivers but the big river haven’t seen any just yet. The first will be bright green bodied elk wing caddis. The term for a major mayfly hatch is “Blanket Hatch” where mayflies cover the water. Caddis hatches are referred to as a “Blizzard”. Caddis become adults subsurface and are in full flight as soon as they break the surface. When a big hatch happens the air is thick with adults. It is truly a sight to witness. Once caddis begin in earnest hatches will continue well into the summer.
As a result of rainy weather the Moose and East Outlet are currently running high. But the Roach, West Outlet and the West Branch are perfect. The run-off down the Moose River is slowing and the flow from at Brassua has been cut in half so things are looking up for the weekend.
Word has it the small trout ponds are “Boiling with trout”. That says it all. Mayflies are still hatching and trout aren’t ready to stop eating them just yet.
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