Observations

Testers upload observations each time they test at a location. Each individual observation report shows you the measurements taken on a specific day at a specific location. What's this?

66,524 observations

+47 new observations added in the past 30 days

Black Oaks Heritage Park (Windsor) : Detroit River

Ontario, Canada

Observed by
Isabelle Kolodziej
Mon, 31 Mar 2025 12:58:00 -0400

Glen Crest Creek at Willowbrook Forest Preserve : Glen Crest Creek

Glen Ellyn, Illinois, United States

Observed by
Mark Thomas
Mon, 31 Mar 2025 11:40:00 -0500

Hoe Stream : Hoe Stream (White Rose Lane Nature Reserve)

Woking, Surrey, United Kingdom

Observed by
Paul S
Mon, 31 Mar 2025 17:31:00 +0100

River Canard (Lasalle) : Canard River

Ontario, Canada

Observed by
Isabelle Kolodziej
Mon, 31 Mar 2025 11:47:00 -0400

Ashen Copse : Cranleigh Waters

Cranleigh, Surrey, United Kingdom

Observed by
Trevor Dale
Mon, 31 Mar 2025 16:30:00 +0100

Tewkesbury Nature Reserve: Southern Foot Bridge : River Swilgate

Cheltenham, Gloucestershire, United Kingdom

Observed by
Giles Alder
Mon, 31 Mar 2025 15:59:00 +0100

Oxleas Meadow 2 : Oxleas Meadow Site 2

London, Greenwich, United Kingdom

Observed by
Emma Parkin
Mon, 31 Mar 2025 15:55:00 +0100

Port Colborne at the entrance from Lake Erie : Welland Canal

Port Colborne, Ontario, Canada

Observed by
Joshua Muscat
Mon, 31 Mar 2025 10:52:50 -0400

Winfield Creek at Emerson School : Winfield Creek

Wheaton, Illinois, United States

Observed by
Maureen Keil
Mon, 31 Mar 2025 09:25:00 -0500

DuPage River Park - Small Pond - Site 2 : Pond

Naperville, Illinois, United States

Observed by
Leah Gladkowski
Mon, 31 Mar 2025 09:19:00 -0500

Cabrera Riverside Walk : River Bourne

Virginia Water, Surrey, United Kingdom

Observed by
Rosie Deane
Mon, 31 Mar 2025 13:40:00 +0000

Upstream of Leyton Jubilee Park's double outfall (what3words: ///curving.cups.brings) : Dagenham Brook

London, Waltham Forest, United Kingdom

Observed by
Steve Williams
Mon, 31 Mar 2025 14:30:00 +0100

Downstream of Leyton Jubilee Park's double outfall (what3words: ///curving.cups.brings) : Dagenham Brook

London, Waltham Forest, United Kingdom

Observed by
Steve Williams
Mon, 31 Mar 2025 14:30:00 +0100

Landings Wood Stream : Landings Wood Stream

Farncombe, Surrey, United Kingdom

Observed by
David M Jones
Mon, 31 Mar 2025 14:00:00 +0100

Garden at 42 Sturt Road : River Wey

Haslemere, West Sussex, United Kingdom

Observed by
Alastair Bayliss
Mon, 31 Mar 2025 13:51:00 +0100

Dagenham Brook U/S : Dagenham Brook

London, Waltham Forest, United Kingdom

Observed by
Steve Williams
Mon, 31 Mar 2025 13:45:00 +0100

Dagenham Brook D/S : Dagenham Brook

London, Waltham Forest, United Kingdom

Observed by
Steve Williams
Mon, 31 Mar 2025 13:45:00 +0100

From Godalming Treatment Works : Unstead Inlet

Godalming, Surrey, United Kingdom

Observed by
Andrew Lockett
Mon, 31 Mar 2025 13:00:00 +0100

Hatch Roundabout - Downstream : The Ching

London, Waltham Forest, United Kingdom

Observed by
Derek Seume
Mon, 31 Mar 2025 12:43:00 +0100

Thornhurst Brook at Vachery : Thornhurst Brook

Cranleigh, Surrey, United Kingdom

Observed by
Brian and Claire clarke
Mon, 31 Mar 2025 11:15:00 +0000