Dataset

Lea Guardians

Dataset by Thames21

Dataset summary

Observations

26 February 2026

River Lea Flood Relief Channel

15 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, turbidity, water flow, water level, water temperature

26 February 2026

Bridge by Springfield Marina

15 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, turbidity, water flow, water level, water temperature

25 February 2026

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

25 February 2026

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

24 February 2026

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

24 February 2026

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

24 February 2026

Rectory Farm

13 parameters tested

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

24 February 2026

Eversley Crescent Outfall (Downstream)

5 parameters tested

ammonia, current weather, current weather description, odour, phosphate

23 February 2026

Arnos Park Growing Space (downstream)

5 parameters tested

ammonia, conductivity, phosphate, turbidity, water temperature

23 February 2026

Arnos Park Growing Space (upstream)

5 parameters tested

ammonia, conductivity, phosphate, turbidity, water temperature

23 February 2026

Waterfall Walk 2 (Downstream)

5 parameters tested

ammonia, conductivity, phosphate, turbidity, water temperature

23 February 2026

Waterfall Walk 1 (Upstream)

5 parameters tested

ammonia, conductivity, phosphate, turbidity, water temperature

22 February 2026

Whitehall Outfall 5b

15 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, water temperature

22 February 2026

Whitehall Outfall 5a

15 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, water temperature

22 February 2026

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

22 February 2026

D/S Whitehall Rd

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

22 February 2026

Whitehall Outfalls

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

21 February 2026

Lordship Recreation Ground (Downstream)

19 parameters tested

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, secchi depth (clarity), turbidity, water depth, water flow, water level, water temperature

21 February 2026

Grovelands Park Lake Outfall by cafe and dam

7 parameters tested

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

21 February 2026

Grovelands Park Lake Downstream of reedbeds

7 parameters tested

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