Technique · Every session, before you rig up.
Reading water
Finding the 20 per cent of the river that holds 80 per cent of the fish, before you make a cast.
What a fish is actually buying
A trout holding in a current is buying three things at once: food delivered at a rate worth the energy, oxygen, and cover from above. The best lies in any river satisfy all three within a square metre — that is why they are usually at the lip of a pool, behind a midstream boulder, or along a bank undercut by the current. Water that looks 'fishy' because it is deep and calm often fails the food test; water that looks fast and shallow often fails the cover test.
The seam is the thing
Where fast water meets slow water there is a seam: a line of slack, a conveyor of food with no cost to hold position. Learn to see seams as clearly as you see rocks and your catch rate roughly doubles. On a large river, binoculars used from a high bank will show you the seams you cannot see from the water's edge.
Walk it at low water
The single highest-value hour you can spend on a new river is walking its bank in low, clear conditions and photographing the bottom structure. A river you have seen empty is a river you can fish with confidence at normal height, because you know where the rocks, shelves and holes are even when the water hides them.
Rivers in the ledger where this applies
White River, Arkansas
Ozark foothills below Bull Shoals Dam, Arkansas, United StatesA tailwater you fish from a boat, where the generation schedule is the tide table.
brown · rainbow · cutthroat
Apr · May · Jun · Sep · Oct · NovDavidson River
Pisgah National Forest, North Carolina, United StatesThe most accessible trout water in the southern Appalachians, and surprisingly technical.
brown · rainbow
Apr · May · Sep · OctPenns Creek
Centre and Snyder Counties, Pennsylvania, United StatesWhere the Green Drake hatch is a public event and the whole valley closes for a week.
brown · brook · rainbow
Apr · May · Jun · OctLetort Spring Run
Cumberland County, Pennsylvania, United StatesThe hardest small stream in America, and the one that invented the terrestrial fly.
brown
Apr · May · Jun · OctFarmington River
Litchfield County, Connecticut, United StatesNew England's most reliable tailwater, with a catch-and-release TMA that fishes in January.
brown · brook · rainbow
May · Jun · Jul · Sep · OctPere Marquette River
West-central Michigan, United StatesA national-forest river where fall steelhead run on autumn rain, not on a dam schedule.
brown · steelhead · rainbow
Apr · May · Sep · Oct · Nov