Dataset

Hogsmill Water Quality

Dataset summary

Observations

11 April 2026

Green Lanes A (downstream of old green lanes stream)

20 parameters tested

air temperature, algae, alkalinity, ammonia, chlorine, clarity, colour, conductivity, current weather, hardness, nitrate-nitrogen, odour, water surface, oxygen, ph, phosphate, water depth, water flow, water level, water temperature

10 April 2026

Ewell Storm Tank

15 parameters tested

air temperature, alkalinity, ammonia, chlorine, conductivity, current weather, hardness, nitrate-nitrogen, oxygen, ph, phosphate, water depth, water flow, water level, water temperature

10 April 2026

Bonesgate

16 parameters tested

air temperature, alkalinity, ammonia, chlorine, conductivity, current weather description, hardness, nitrate, oxygen, ph, phosphate-phosphorus, phosphate, pollution sources, weather in the past 24hrs, water level, water temperature

9 April 2026

Berrylands Bridge

26 parameters tested

air temperature, algae, alkalinity, ammonia, chloride, chlorine, clarity, colour, conductivity, current weather, current weather description, hardness, nitrate-nitrogen, odour, water surface, oxygen, ph, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, water depth, water flow, water level, water temperature, water use

31 March 2026

Middle Mill

16 parameters tested

air temperature, alkalinity, ammonia, chlorine, clarity, colour, conductivity, current weather, hardness, nitrate-nitrogen, odour, water surface, ph, phosphate, weather in the past 24hrs, water temperature

27 March 2026

Chamber Meads Outlet

15 parameters tested

air temperature, alkalinity, ammonia, chlorine, conductivity, current weather, hardness, nitrate-nitrogen, odour, oxygen, ph, phosphate, water depth, water flow, water temperature

27 March 2026

Chamber Meads Inlet

15 parameters tested

air temperature, alkalinity, ammonia, chlorine, conductivity, current weather, hardness, nitrate-nitrogen, odour, oxygen, ph, phosphate, water depth, water flow, water temperature

18 March 2026

Saipem S1 - Kingston Chamber of Commerce

23 parameters tested

air temperature, algae, alkalinity, ammonia, chlorine, clarity, colour, conductivity, current weather, current weather description, hardness, nitrites, odour, water surface, ph, phosphate, weather in the past 24hrs, weather in the past 24hrs description, secchi depth (clarity), water depth, water flow, water level, water temperature

18 March 2026

Downstream Stepping Stones

20 parameters tested

air temperature, algae, alkalinity, ammonia, chlorine, clarity, colour, conductivity, current weather, hardness, nitrate-nitrogen, odour, water surface, oxygen, ph, phosphate, water depth, water flow, water level, water temperature

18 March 2026

Green Lanes A (downstream of old green lanes stream)

20 parameters tested

air temperature, algae, alkalinity, ammonia, chlorine, clarity, colour, conductivity, current weather, hardness, nitrate-nitrogen, odour, water surface, oxygen, ph, phosphate, water depth, water flow, water level, water temperature

17 March 2026

Bonegate Stream

23 parameters tested

air temperature, algae, alkalinity, ammonia, chlorine, clarity, colour, conductivity, current weather, hardness, nitrate, odour, water surface, oxygen, ph, phosphate, pollution sources, weather in the past 24hrs, water depth, water flow, water level, water temperature, water use

17 March 2026

Ewell Storm Tank

12 parameters tested

air temperature, alkalinity, ammonia, chlorine, conductivity, current weather, hardness, nitrate-nitrogen, oxygen, ph, phosphate, water temperature

6 March 2026

Bonesgate

15 parameters tested

air temperature, alkalinity, ammonia, chlorine, clarity, conductivity, current weather, hardness, nitrate, oxygen, ph, phosphate, pollution sources, weather in the past 24hrs, water temperature

5 March 2026

Berrylands Bridge

25 parameters tested

air temperature, algae, alkalinity, ammonia, chloride, chlorine, clarity, colour, conductivity, current weather, current weather description, hardness, nitrate-nitrogen, nitrites, odour, water surface, oxygen, ph, phosphate, weather in the past 24hrs, weather in the past 24hrs description, water depth, water flow, water level, water temperature

24 February 2026

Middle Mill

18 parameters tested

air temperature, algae, alkalinity, ammonia, chlorine, clarity, colour, conductivity, current weather, hardness, nitrate-nitrogen, odour, ph, phosphate, weather in the past 24hrs, water flow, water level, water temperature

16 February 2026

Bonesgate

20 parameters tested

algae, alkalinity, ammonia, chlorine, clarity, colour, conductivity, current weather, hardness, nitrate-nitrogen, odour, water surface, oxygen, ph, phosphate, pollution sources, weather in the past 24hrs, water flow, water level, water temperature

9 February 2026

Berrylands Bridge

24 parameters tested

air temperature, algae, alkalinity, ammonia, clarity, colour, conductivity, current weather, hardness, nitrate-nitrogen, odour, water surface, oxygen, ph, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, secchi depth (clarity), water depth, water flow, water level, water temperature, water use

9 February 2026

Saipem S2- Middle Mill

11 parameters tested

air temperature, alkalinity, ammonia, conductivity, current weather, hardness, nitrate, ph, phosphate, weather in the past 24hrs, water temperature

8 February 2026

Bonegate Stream

25 parameters tested

air temperature, algae, alkalinity, ammonia, chlorine, clarity, colour, conductivity, current weather, current weather description, hardness, nitrate-nitrogen, odour, water surface, oxygen, ph, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, water depth, water flow, water level, water temperature, water use

7 February 2026

Downstream Stepping Stones

20 parameters tested

air temperature, algae, alkalinity, ammonia, chlorine, clarity, colour, conductivity, current weather, hardness, nitrate-nitrogen, odour, water surface, oxygen, ph, phosphate, weather in the past 24hrs, water depth, water flow, water temperature