Barnes Common Riverfly site : Beverley Brook

London, Richmond upon Thames, United Kingdom

Observed by
Rachel Walker

Observation report

See trends at this location

Water quality tests

Pending Quality Check from Water Rangers What's this?

pH (0-14) What's this? 7.8
Dissolved oxygen mg/L What's this? 8.8
Ammonia ppm What's this? 0.18
Chlorine ppm What's this? 0.0
Hardness mg/L What's this? 200.0
Nitrates ppm What's this? 2.0
Alkalinity mg/L What's this? 100.0
Water depth m What's this? 0.4
Conductivity μS/cm What's this? 1,441.0
Air temperature °C What's this? 13.0
Water temperature °C What's this? 9.6
Phosphates total ppm What's this? 1.25

Weather

Current weather What's this?
Weather in previous 24 hours What's this?

Latest photos

Notes

Section of Brook significantly reconfigured since previous survey.

Riverfly score - 6
Caddisflies: cased 23 (2 pebble cases, 21 stick cases) / caseless 0
Olives: 5
Gammarus: 270
Also: 17 damselfly larvae of varying sizes, 3 stickleback.

New species recorded: Theodoxus fluviatilis, River nerite.