riverfly monitoring

Buntingford Aspenden Road Bridge Riverfly Monitoring – October 2022

Site: Aspenden Road Bridge, Buntingford, River Rib
Recorders: David Edwards, John Hood
Survey date: 27th October 2022
Time: 1100hrs
Air temperature:
Water Temperature:
Weather:
Flow: 3
Phosphate: 2.50+
Nitrate: 50.0
Nitrite: 0.3

Cased Caddisfly41
Caseless caddisfly11
Mayfly (Ephemeridae)00
BWO (Ephemerellidae)00
Olives (Baetidae)11
Stoneflies00
Shrimps (Gammarus)00
Score3
Water hog louse (10), beetle larvae (5), Crane fly larvae (3)