/0.042315,51.486184,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
Maryon Wilson Park
Stream in Maryon Wilson Park, London
-
257 Datapoints
-
21 Observations
- Monitored since: 25 April 2024
- Last observation on: 11 October 2026
- Data collector: Zara Visanji
Latest water quality data added
716,296 datapoints at 9,534 locations
+694 new locations added in the last 30 days
-
View trends at this location
-
/0.019638,51.626279,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationWhitehall Outfall 5b
River Ching, Buckhurst Hill
-
915 Datapoints
-
72 Observations
- Monitored since: 14 March 2025
- Last observation on: 11 October 2026
- Data collector: Harrison Tremain
-
-
View trends at this location
Whitehall Outfall 5a
River Ching, Buckhurst Hill
-
934 Datapoints
-
71 Observations
- Monitored since: 14 March 2025
- Last observation on: 11 October 2026
- Data collector: Harrison Tremain
-
-
/0.203395,52.058463,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationBetween the Chesterfords
River Cam, Saffron Walden
-
49 Datapoints
-
3 Observations
- Monitored since: 23 August 2026
- Last observation on: 11 October 2026
- Data collector: Lucy Bullen-Smith
-
-
/-75.684261,44.586496,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationHardy Park Boat Launch
St Lawrence River, Brockville
-
390 Datapoints
-
18 Observations
- Monitored since: 12 June 2026
- Last observation on: 11 October 2026
- Data collector: Emily Harwood
-
-
/0.006706,51.607557,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationBrookfield Meadow
River Ching, London
-
105 Datapoints
-
16 Observations
- Monitored since: 31 May 2026
- Last observation on: 11 October 2026
- Data collector: Martin Collett
-
-
/-0.188778,51.616235,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationOutfall Doll0038 at RMI Site
Dollis Brook , London
-
390 Datapoints
-
21 Observations
- Monitored since: 15 June 2025
- Last observation on: 11 October 2026
- Data collector: Judith Howlett
-
-
/-0.188847,51.616455,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationRiverside Park (Upstream)
Dollis Brook, London
-
603 Datapoints
-
44 Observations
- Monitored since: 20 May 2023
- Last observation on: 11 October 2026
- Data collector: Alistair Young
-
-
/-0.189024,51.616017,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationRiverside Park (Downstream)
Dollis Brook, London
-
519 Datapoints
-
40 Observations
- Monitored since: 20 May 2023
- Last observation on: 11 October 2026
- Data collector: Alistair Young
-
-
/-0.190632,51.617927,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationOutfall Foly0003
Folly Brook , London
-
94 Datapoints
-
6 Observations
- Monitored since: 13 July 2026
- Last observation on: 11 October 2026
- Data collector: Judith Howlett
-
-
/-0.189478,51.617261,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationFolly pre confluence
Folly Brook, London
-
429 Datapoints
-
24 Observations
- Monitored since: 05 February 2025
- Last observation on: 11 October 2026
- Data collector: Dianne Murphy
-
-
/0.016257,51.621835,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationNewgate Street
The Ching, Buckhurst Hill
-
1,028 Datapoints
-
102 Observations
- Monitored since: 19 July 2024
- Last observation on: 11 October 2026
- Data collector: Martin Curry
-
-
/0.019402,51.625457,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationD/S Whitehall Rd
The Ching, Buckhurst Hill
-
1,056 Datapoints
-
104 Observations
- Monitored since: 19 July 2024
- Last observation on: 11 October 2026
- Data collector: Martin Curry
-
-
/0.019922,51.626392,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationWhitehall Outfalls
The Ching, Buckhurst Hill
-
1,063 Datapoints
-
103 Observations
- Monitored since: 19 July 2024
- Last observation on: 11 October 2026
- Data collector: Martin Curry
-
-
/0.088255,51.480692,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationSlade Pond Outfall
Slade Pond, London
-
316 Datapoints
-
19 Observations
- Monitored since: 25 April 2024
- Last observation on: 11 October 2026
- Data collector: Zara Visanji
-
-
/0.089049,51.481147,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationSlade Pond Inlet
Slade Pond, London
-
293 Datapoints
-
18 Observations
- Monitored since: 25 April 2024
- Last observation on: 11 October 2026
- Data collector: Zara Visanji
-
-
/-123.410381,48.634912,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationSite 1 Culvert
Reay Creek, North Saanich
-
413 Datapoints
-
41 Observations
- Monitored since: 25 July 2025
- Last observation on: 10 October 2026
- Data collector: Allison Weber
-
-
/-123.411054,48.635359,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationSite 2 Metal Bridge
Reay Creek, North Saanich
-
387 Datapoints
-
38 Observations
- Monitored since: 22 August 2025
- Last observation on: 10 October 2026
- Data collector: Allison Weber
-
-
/-123.41436,48.637935,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationFrost Avenue
Reay Creek, Sidney
-
391 Datapoints
-
40 Observations
- Monitored since: 22 August 2025
- Last observation on: 10 October 2026
- Data collector: Allison Weber
-
-
/-1.957985,53.862096,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationJonny Beck: Lund Lane/Game Scar Lane Junction
Jonny Beck, Keighley
-
63 Datapoints
-
3 Observations
- Monitored since: 22 August 2026
- Last observation on: 10 October 2026
- Data collector: Sam Riley-Gunn
-