Site: Standon A120 Bridge, River Rib
Recorders: Toby Spencer, Andy Ayres
Survey date: 13th April 2023
Time: 1000hrs
Air temperature:
Water Temperature: 8ºC
Weather:
Flow: 4
Phosphate: 0.44
Nitrate:
Nitrite:
| Cased Caddisfly | 120 | 3 |
| Caseless caddisfly | 9 | 1 |
| Mayfly (Ephemeridae) | 11 | 2 |
| BWO (Ephemerellidae) | 60 | 2 |
| Olives (Baetidae) | 80 | 2 |
| Stoneflies | 0 | 0 |
| Shrimps (Gammarus) | 153 | 3 |
| Score | 13 | |
| bullheads 3, water hog louse 6, leeches 10 |
Friends of the Rib and Quin 