Saipem S4 - Berrylands playground : Hogsmill

London, Kingston upon Thames, United Kingdom

Observed by
Steve Gibbs
  • Observed on: Thu, 17 Jul 2025 12:40:00 +0100
  • Lat: 51.3986166
  • Lng: -0.2763533

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? 8.4
Ammonia ppm What's this? 0.26
Secchi depth m What's this? bottom visible
Chlorine ppm What's this? 0.0
Hardness mg/L What's this? 400.0
Nitrates ppm What's this? 2.0
Alkalinity mg/L What's this? 200.0
Water depth m What's this? 0.4
Conductivity μS/cm What's this? 736.0
Air temperature °C What's this? 24.0
Water temperature °C What's this? 19.3
Phosphates total ppm What's this? 1.47

Weather

Current weather What's this?
Cloudy with sunny intervals and a slight breeze
Weather in previous 24 hours What's this?
Dry but there was 1mm of rain upstream of the test location in the previous 48hours. However this was after 10 days of hot dry weather.

Latest photos

No photos uploaded.

Notes

River depth similar to June and May visits, however river flow rate was down to 2m/minute. Previously 3.4m/minute in June and 4m/minute in May.