Riverfly Monitoring




As part of the Riverfly Partnership, ARK are part of a national initiative regularly monitoring water quality. Trained ARK volunteers monitor 62 sites on the River Kennet and its tributaries to check the health of the river and pick up otherwise undetected pollution incidents. 

 

If you'd like to see the latest data please email anna@riverkennet.org

ARK and 
Citizen Science


Riverfly monitoring assesses the water quality of Britain's rivers by identifying and counting eight key indicator invertebrates which live in our rivers.  The data is shared with the Environment Agency, The Riverfly Partnership, The Wildlife Trusts and any other interested parties, as well as being analysed by ARK.  


  
Riverfly monitoring is a proven method of picking up pollution incidents that would otherwise go undetected.  In July 2013 a major chlorpyrifos pollution event was picked up by our monitors at Elcot Mill, Marlborough and subsequently led to the prevention of any further discharge of this insecticide into the watercourse. 


The Key Indicators: 

Caddisfly (Sedge) Larvae


Cased Caddis


Caseless Caddis

caseless caddis larvae

Upwing Fly Larvae


Mayfly (Ephemeridae)



Blue-winged olive (Emphemerelidae)

blue winged olive ephemerelidae

Olives (Baetidae)

olives baetidae

Flat-bodied Heptageniidae

flat-bodied heptagenidae


Stonefly Larvae 


Stoneflies - from the order Plecoptera

stonefly

Freshwater Shrimp


Gammarus pulex