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

East Holland River at Aurora Community Arboretum (AFLC) : Lake Simcoe

Aurora, Ontario, Canada

Observed by
Ian Xiong
Sat, 19 Apr 2025 14:49:00 -0400

St. Andrews on the Hill (SAC) : Tannery Creek

Aurora, Ontario, Canada

Observed by
Ian Xiong
Sat, 19 Apr 2025 14:06:00 -0400

Hickory Creek River at Highland Park Drive : Hickey Creek River

Joliet, Illinois, United States

Observed by
Kathy Janik
Sat, 19 Apr 2025 12:30:00 -0500

Upper Carp River at Creek Rd/Third Line W : Upper Carp River

Ontario, Canada

Observed by
Community Volunteers
Sat, 19 Apr 2025 12:25:00 -0400

Rouge River : River

Markham, Ontario, Canada

Observed by
Joyce Gan
Sat, 19 Apr 2025 15:10:00 +0000

MA102 : Stream

Markham, Ontario, Canada

Observed by
Joyce Gan
Sat, 19 Apr 2025 14:50:00 +0000

Waubonsie Creek : Waubonsie Creek

Aurora, Illinois, United States

Observed by
Briana Moore
Sat, 19 Apr 2025 09:37:00 -0500

MA101 : creek

Markham, Ontario, Canada

Observed by
Joyce Gan
Sat, 19 Apr 2025 14:32:00 +0000

Cannington Community Centre Park : Beaver River

Brock, Ontario, Canada

Observed by
Don Ross
Sat, 19 Apr 2025 10:30:00 -0400

Beech Hall : The Ching

London, Waltham Forest, United Kingdom

Observed by
Martha Jeffery
Sat, 19 Apr 2025 11:30:00 +0100

Beech Hall Crescent CSO : River Ching

London, Waltham Forest, United Kingdom

Observed by
Martha Jeffery
Sat, 19 Apr 2025 11:30:00 +0100

Folly Lane EA monitoring point : The Ching

London, Waltham Forest, United Kingdom

Observed by
Lis Loebner
Sat, 19 Apr 2025 09:30:00 +0100

Evans Field - Des Plaines River -Trail Marker 215 : Des Plaines River

River Grove, Illinois, United States

Observed by
Serena Pesch
Fri, 18 Apr 2025 20:12:00 -0500

West Branch of the DuPage River : DuPage River (west branch)

Naperville, Illinois, United States

Observed by
Shoshana Frank
Fri, 18 Apr 2025 13:34:00 -0500

Root River Wishart Park : Root River

Ontario, Canada

Observed by
Community Volunteers
Fri, 18 Apr 2025 14:11:00 -0400

North side Bemis road : Glencrest creek

Glen Ellyn, Illinois, United States

Observed by
Lance Lambert
Fri, 18 Apr 2025 12:00:00 -0500

Glencrest creek south of Bemis Road : Glencrest Creek

Glen Ellyn, Illinois, United States

Observed by
Lance Lambert
Fri, 18 Apr 2025 11:46:00 -0500

Newgate Street : The Ching

Buckhurst Hill, Waltham Forest, United Kingdom

Observed by
Martin Curry
Fri, 18 Apr 2025 15:30:00 +0000

D/S Whitehall Rd : The Ching

Buckhurst Hill, Redbridge, United Kingdom

Observed by
Martin Curry
Fri, 18 Apr 2025 15:20:00 +0000

Whitehall Outfalls : The Ching

Buckhurst Hill, Redbridge, United Kingdom

Observed by
Martin Curry
Fri, 18 Apr 2025 15:15:00 +0000