Dataset

Lea Guardians

Dataset by Thames21

Dataset summary

Observations

21 November 2025

Wadham Ave

8 parameters tested

algae, ammonia, clarity, colour, current weather, odour, water surface, phosphate

21 November 2025

Sainsbury's

10 parameters tested

algae, ammonia, clarity, colour, current weather, odour, water surface, phosphate, water flow, water level

20 November 2025

Hatch Roundabout - Downstream

14 parameters tested

algae, ammonia, clarity, colour, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, water flow, water level

20 November 2025

Hatch Roundabout - Upstream

14 parameters tested

algae, ammonia, clarity, colour, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, water flow, water level

16 November 2025

Broomfield Wetland SE Outlet

19 parameters tested

air temperature, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, total dissolved solids (tds), turbidity, water flow, water level, water temperature

16 November 2025

Broomfield Wetland NE Inlet

20 parameters tested

air temperature, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, total dissolved solids (tds), turbidity, water flow, water level, water temperature, water use

16 November 2025

Broomfield Upper Lake NW Inlet

20 parameters tested

air temperature, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, total dissolved solids (tds), turbidity, water flow, water level, water temperature, water use

16 November 2025

Beech Hall Crescent CSO

14 parameters tested

algae, ammonia, clarity, colour, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, water flow, water level

16 November 2025

Beech Hall

13 parameters tested

algae, ammonia, clarity, colour, current weather, current weather description, odour, water surface, phosphate, weather in the past 24hrs, weather in the past 24hrs description, water flow, water level

16 November 2025

Whitehall Outfall 5b

14 parameters tested

algae, ammonia, clarity, colour, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, water flow, water temperature

16 November 2025

Whitehall Outfall 5a

14 parameters tested

algae, ammonia, clarity, colour, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, water level, water temperature

16 November 2025

Grovelands Park Lake Entry

7 parameters tested

ammonia, conductivity, current weather, phosphate, weather in the past 24hrs, turbidity, water temperature

16 November 2025

Grovelands Park Stream below dam

7 parameters tested

ammonia, conductivity, current weather, phosphate, weather in the past 24hrs, turbidity, water temperature

16 November 2025

Grovelands Park Lake Downstream of reedbeds

7 parameters tested

ammonia, conductivity, current weather, phosphate, weather in the past 24hrs, turbidity, water temperature

16 November 2025

Grovelands Park Lake Outfall by cafe and dam

7 parameters tested

ammonia, conductivity, current weather, phosphate, weather in the past 24hrs, turbidity, water temperature

16 November 2025

Whitehall Plain

13 parameters tested

algae, ammonia, clarity, colour, current weather, current weather description, odour, water surface, phosphate, weather in the past 24hrs, weather in the past 24hrs description, water flow, water level

16 November 2025

Footbridge near Rangers Road

13 parameters tested

algae, ammonia, clarity, colour, current weather, current weather description, odour, water surface, phosphate, weather in the past 24hrs, weather in the past 24hrs description, water flow, water level

16 November 2025

Downstream of Connaught Water

14 parameters tested

algae, ammonia, clarity, colour, current weather, current weather description, flow, odour, water surface, phosphate, weather in the past 24hrs, weather in the past 24hrs description, water flow, water level

15 November 2025

Newgate Street

13 parameters tested

algae, ammonia, clarity, colour, conductivity, current weather, odour, water surface, phosphate, weather in the past 24hrs, water flow, water level, water temperature

15 November 2025

D/S Whitehall Rd

11 parameters tested

algae, ammonia, clarity, colour, current weather, odour, water surface, phosphate, weather in the past 24hrs, water flow, water level