About this organization
Thames21's water monitoring programme relies on citizen scientists to collect crucial data on river health, focusing on water quality
Read moreRecent locations
View all ›16 parameters tested ▾
algae, ammonia, clarity, colour, current weather, current weather description, odour, water surface, oxygen, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, turbidity, water level, water use
View form & equipment24 parameters tested ▾
ice on, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, outfall aesthetics, outfall flow, phosphate, pollution signs, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, secchi depth (clarity), turbidity, water depth, water flow, water level, water temperature, water use
View form & equipment23 parameters tested ▾
ice on, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, outfall aesthetics, outfall flow, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, secchi depth (clarity), turbidity, water depth, water flow, water level, water temperature, water use
View form & equipment25 parameters tested ▾
ice on, air temperature, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, outfall aesthetics, outfall flow, phosphate, pollution signs, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, secchi depth (clarity), turbidity, water depth, water flow, water level, water temperature, water use
View form & equipment22 parameters tested ▾
air temperature, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, nitrites, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, total dissolved solids (tds), turbidity, water depth, water flow, water level, water temperature, water use
View form & equipment24 parameters tested ▾
ice on, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, outfall aesthetics, outfall flow, phosphate, pollution signs, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, secchi depth (clarity), turbidity, water depth, water flow, water level, water temperature, water use
View form & equipmentRecent photos
View more photos ›-
Clitterhouse Downstream, 19 May 2026
Dataset: Brent Catchment Water Quality Working Group -
Clitterhouse Downstream, 19 May 2026
Dataset: Brent Catchment Water Quality Working Group -
Clitterhouse Mid-Stream , 19 May 2026
Dataset: Brent Catchment Water Quality Working Group -
Clitterhouse Mid-Stream , 19 May 2026
Dataset: Brent Catchment Water Quality Working Group