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?

66,342 observations

+459 new observations added in the past 30 days

Entrance near road run-off : Lac McGlashan

Val Des Monts, Quebec, Canada

Observed by
Kat Kavanagh
Fri, 04 Jul 2025 17:24:00 -0400

Bellevue Park Topsail Island : St. Marys River

Ontario, Canada

Observed by
Community Volunteers
Fri, 04 Jul 2025 17:24:00 -0400

Lost Lake : Big Rideau Lake

Portland, Ontario, Canada

Observed by
Diana Carr
Fri, 04 Jul 2025 21:15:00 +0000

End of Briton Bay : Big Rideau Lake

Portland, Ontario, Canada

Observed by
Diana Carr
Fri, 04 Jul 2025 20:55:00 +0000

NW of Tar Island : Big Rideau Lake

Portland, Ontario, Canada

Observed by
Diana Carr
Fri, 04 Jul 2025 20:25:00 +0000

Rouge River : Rouge River

Quebec, Canada

Observed by
de Haan Family
Fri, 04 Jul 2025 16:05:40 -0400

Bellevue Marina : St Marys River

Sault Ste. Marie, Ontario, Canada

Observed by
Community Volunteers
Fri, 04 Jul 2025 15:32:00 -0400

Peace Park Beach : Lake Huron

Thessalon, Ontario, Canada

Observed by
Huron North Community Volunteers
Fri, 04 Jul 2025 13:50:00 -0400

Black River outflow to Lake Ontario : Black River

Milford, Ontario, Canada

Observed by
Don Ross
Fri, 04 Jul 2025 13:50:00 -0400

Lakeside Park Beach - North Shore : Lake Huron

Thessalon, Ontario, Canada

Observed by
Huron North Community Volunteers
Fri, 04 Jul 2025 13:30:00 -0400

Lombardy : Big Rideau Lake

Ontario, Canada

Observed by
Doris Albert
Fri, 04 Jul 2025 13:26:07 -0400

Lagoon output off Peachy Street : Lagoon

Ontario, Canada

Observed by
Community Volunteers
Fri, 04 Jul 2025 13:04:00 -0400

South Bay Cres Public Boat Launch : Creek leading to South Bay on Lake Ontario

Milford, Ontario, Canada

Observed by
Don Ross
Fri, 04 Jul 2025 13:00:00 -0400

My home : Mississippi lake

Carleton Place, Ontario, Canada

Observed by
Lise Boulay
Fri, 04 Jul 2025 17:00:00 +0000

Highway 35 Bridge : Pearl River

Carthage, Mississippi, United States

Observed by
Foch Dickens
Fri, 04 Jul 2025 11:40:48 -0500

Old Highway 13 Bridge : Pearl River

Lena, Mississippi, United States

Observed by
Foch Dickens
Fri, 04 Jul 2025 11:11:09 -0500

End of B Line - Shoal Island : Lake Huron - Shoal Island

Ontario, Canada

Observed by
Janice Fairfax
Fri, 04 Jul 2025 10:10:00 -0400

Jamie Bay sampling : Big Basswood Lake

Ontario, Canada

Observed by
Paul and Tania Hazlett
Fri, 04 Jul 2025 08:30:00 -0400

Gatineau River - rue Jacques Cartier / rue Blais : Gatineau River

Gatineau, Quebec, Canada

Observed by
Susan Clements
Fri, 04 Jul 2025 06:42:00 -0400

Kyd Brook S.W.O upstream : Kyd Brook

London, Bromley, United Kingdom

Observed by
Kirsty Blackman
Fri, 04 Jul 2025 11:10:00 +0100