Kick Testing a River - Checking Ecosystem Health
Channel: Pondguru
Date: 24/03/2016

A few days before the Trout season started I went down to my local river to check the health after the raging floods of winter.
The creatures (some in larval form) I was looking for were as follows - in order of river health:
Stoneflies:  https://en.wikipedia.org/wiki/Plecoptera
Mayflies: https://en.wikipedia.org/wiki/Mayfly
Caddisflies: https://en.wikipedia.org/wiki/Caddisfly
Freshwater shrimp: https://en.wikipedia.org/wiki/Gammarus
Water louse: https://en.wikipedia.org/wiki/Asellus_aquaticus
Sludgeworm: https://en.wikipedia.org/wiki/Tubifex_tubifex 
Rat-tailed maggot: https://en.wikipedia.org/wiki/Rat-tailed_maggot
Turns out that all the invertebrates associated with good water quality (toward top of list) were present in good numbers so things are looking good for the fishing season. Now we need some better weather to warm up the water and get the fish feeding.
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Pondguru