riverfly monitoring

Standon A120 Bridge Riverfly Monitoring – October 2022

Site: Standon A120 Bridge, River Rib
Recorders: Toby Spencer, Nic Bartrop
Survey date: 20th October 2022
Time: 1400hrs
Air temperature:
Water Temperature: 12ºC
Weather:
Flow: 3
Phosphate: 1.14
Nitrate: 5ppm
Nitrite: 0

Cased Caddisfly752
Caseless caddisfly41
Mayfly (Ephemeridae)61
BWO (Ephemerellidae)00
Olives (Baetidae)232
Stoneflies00
Shrimps (Gammarus)1453
Score9
sticklebacks 13, leeches 2, diving beetle larvae 2