riverfly monitoring

Buntingford Aspenden Road Bridge Riverfly Monitoring – December 2022

Site: Aspenden Road Bridge, Buntingford, River Rib
Recorders: David Edwards, John Hood
Survey date: 3rd December 2022
Time: 1500hrs
Air temperature:
Water Temperature: 4 deg
Weather:
Flow: 2
Phosphate: 2.50+
Nitrate: 50.0
Nitrite: 0.5

Cased Caddisfly51
Caseless caddisfly00
Mayfly (Ephemeridae)00
BWO (Ephemerellidae)00
Olives (Baetidae)00
Stoneflies00
Shrimps (Gammarus)00
Score1
Stickleback (1), Water hog louse (30), leeches (15), Crane fly larvae (1)