Waterloo Lake : Landing stage by cafe : Roundhay Park :Waterloo Lake

Leeds, Leeds, United Kingdom

Observed by
Mary Clayton

Observed on: Mon, 28 Jul 2025 09:40:00 +0100
Associated with:
Roundhay Environmental Action Project and Friends of Roundhay Park : Roundhay Freshwater Watch
Lat: 53.8344402
Lng: -1.4964753

Observation report

Pending Quality Check from Water Rangers What's this?

pH (0-14) 8.0

Dissolved oxygen mg/L 7.0

Chlorine ppm 0.25

Hardness mg/L 200.0

Nitrates ppm 0.35

Alkalinity mg/L 120.0

Conductivity μS/cm 423.0

Air temperature °C 23.0

Water temperature °C 21.4

Phosphates total ppm 0.05

Algae No

Odour None

Clarity Clear

Water Flow Still

Water Uses Other

Water Level Average

Water Colour Brown

On the water surface Natural debris

Insect

Bird

Current weather

Weather in previous 24 hours

Observation was made the day after the Ironman Leeds international race which involved approx 2500 swimmers in the lake.