Ammonia ppm
What's this?
0.05
Riverside Park (Upstream) : Dollis Brook
London, Barnet, United Kingdom

Observed by
Judith Howlett
- Observed on: Tue, 15 Jul 2025 10:00:00 +0100
- Testers Jude and Nicky
-
Associated with:
Thames21 : Brent Catchment Water Quality Working Group - Lat: 51.616455
- Lng: -0.1888475
Observation report
See trends at this locationWater quality tests
Pending Quality Check from Water Rangers What's this?
Conductivity μS/cm
What's this?
908.0
Turbidity NTU
What's this?
12.0
Air temperature °C
What's this?
21.0
Water temperature °C
What's this?
18.5
Phosphates total ppm
What's this?
2.5
Qualitative
Algae
What's this?
No
Odour
What's this?
None
Clarity
What's this?
Clear
Pollution
What's this?
Residential discharge, Urban/road discharge
Water Flow
What's this?
Slow
Water Level
What's this?
Low
Water Colour
What's this?
Clear
On the water surface
What's this?
None
Weather
Current weather What's this?
Weather in previous 24 hours What's this?
Latest photos
Notes
Long period low rainfall.
Riverfly Monitoring site ARMI Score today 8
A lot of gammerus, small fish also observed.
Outfall here has been reported to Thames Water and EA. Currently a boom in place. Thames Water today working on Holden Road (uphill from this location). Working on improvements