SMALL TRIANGLES

Trout & Salmon (UK) - - READING RIVERS -

There are smaller triangles within the big­ger triangles. These pock­ets, as an­glers call them, are caused by seen or un­seen ob­struc­tions and riverbed fea­tures. A fast-wa­ter pocket, viewed from the sur­face, can seem a tor­ren­tial, hos­tile en­vi­ron­ment, but all are fish­hold­ing ar­eas. Fish view their mul­ti­paced en­vi­ron­ment dif­fer­ently to us. They know all about fea­ture, struc­ture and flow; a tri­an­gle to a fish is prime ter­ri­tory and even in the fastest flow a small boul­der can give them shel­ter un­der a bro­ken tur­bu­lent sur­face. A key difference be­tween the main­flow tri­an­gle and the pocket tri­an­gle is the re­ver­sal of fast- and slow-flow­ing wa­ter. In the main flow of a pool, fast wa­ter is cen­tral with slow wa­ter on the edges. But in a pocket tri­an­gle, slow wa­ter is com­pletely sur­rounded by fast wa­ter and tur­bu­lence. How­ever, both triangles have the same fish-hold­ing fea­ture: the crease. In a small pocket, fish will tend to be in ones or twos, sit­ting cen­trally and mov­ing off sta­tion to take food. In large pock­ets, be­hind big­ger ob­struc­tions, or mul­ti­ple breaks in flow, you will find more fish, due to less com­pe­ti­tion for food over a larger area. Bro­ken wa­ter like this can hold large num­bers of fish and to fish ef­fec­tively you need to cover nu­mer­ous ar­eas with your flies.

Pock­ets with slow cen­tres

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