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?

66,523 observations

+46 new observations added in the past 30 days

Kishwaukee River South Branch at Russell Woods : Kishwaukee River South Branch

Genoa, Illinois, United States

Observed by
Rachel Ford
Sun, 27 Apr 2025 16:20:00 -0500

Kickapoo Creek at Leslie Rutherford Park : Kickapoo Creek

Dunlap, Illinois, United States

Observed by
Robert Rowe
Sun, 27 Apr 2025 16:00:00 -0500

Beaver Creek : Creek

Richmond Hill, Ontario, Canada

Observed by
Edwin Yu
Sun, 27 Apr 2025 20:37:37 +0000

Tyler Creek Forest Preserve : Tyler Creek

Elgin, Illinois, United States

Observed by
Suzi Myers
Sun, 27 Apr 2025 20:36:03 +0000

Near Port Dover Marina : Lake Erie

Port Dover, Ontario, Canada

Observed by
Chris Keast
Sun, 27 Apr 2025 16:21:00 -0400

Carville Mill Park : Pond

Vaughan, Ontario, Canada

Observed by
Edwin Yu
Sun, 27 Apr 2025 19:59:13 +0000

Pioneer Park : West Branch DuPage River

Naperville, Illinois, United States

Observed by
Kyla Muhammad
Sun, 27 Apr 2025 14:45:00 -0500

South Branch Kish : Kishwaukee River

Union, Illinois, United States

Observed by
Laurie Cisneros
Sun, 27 Apr 2025 14:35:00 -0500

Welland International Flatwater Centre : Welland Canal

Welland, Ontario, Canada

Observed by
Michelle West
Sun, 27 Apr 2025 15:34:00 -0400

Saint Joseph Creek : Saint Joseph Creek

Lisle, Illinois, United States

Observed by
Robert Swirsky
Sun, 27 Apr 2025 14:21:00 -0500

Willow Creek : Willow creek drain s into Rondeau Bay Shrewsbury Ont Can

Chatham Kent, Ontario, Canada

Observed by
Rick Sowinski Maggie Jones
Sun, 27 Apr 2025 15:15:00 -0400

Big Rock Creek at Emmons Woods : Big Rock Creek

Plano, Illinois, United States

Observed by
Nancy Cinatl
Sun, 27 Apr 2025 14:13:00 -0500

3703 Happy Valley : Bilston Creek

British Columbia, Canada

Observed by
Rhiannon Pretty
Sun, 27 Apr 2025 19:07:13 +0000

Cold Water Creek at Old Garden River Road : Cold Water Creek

Rankin Location Indian Reserve 15d, Ontario, Canada

Observed by
Community Volunteers
Sun, 27 Apr 2025 15:01:00 -0400

Dufferin Islands Nature Area : Niagara River

Ontario, Canada

Observed by
Hasmita Patel
Sun, 27 Apr 2025 15:00:00 -0400

Crystal Creek Case Rd : Crystal Creek

Rankin Location Indian Reserve 15d, Ontario, Canada

Observed by
Community Volunteers
Sun, 27 Apr 2025 14:47:00 -0400

A28-6 : Rang 16 sud : Five Fingers

New Brunswick, Canada

Observed by
Francis Lamarche
Sun, 27 Apr 2025 15:45:00 -0300

Chippawa-Front Street Public Dock & McKenzie Landing : Welland River

Ontario, Canada

Observed by
Bhavika Vaghjiani
Sun, 27 Apr 2025 14:32:00 -0400

Dacey Rd at St. Marys River : Storm Water

Ontario, Canada

Observed by
Community Volunteers
Sun, 27 Apr 2025 14:23:00 -0400