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?

62,701 observations

+694 new observations added in the past 30 days

Apple Orchard Park - Mendota Creek : Little Vermillion River

Mendota, Illinois, United States

Observed by
Amy Brewer
Tue, 25 Feb 2025 12:30:00 -0600

Arrowhead Park : Unnamed Creek

Naperville, Illinois, United States

Observed by
Shari Buma
Tue, 25 Feb 2025 18:20:00 +0000

Root River off Hwy 17 N (near Teen Challenge) : Root River

Ontario, Canada

Observed by
Community Volunteers
Tue, 25 Feb 2025 13:10:00 -0500

Cress Creek : Cress Creek

Naperville, Illinois, United States

Observed by
Shari Buma
Tue, 25 Feb 2025 12:01:00 -0600

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

Milford, Ontario, Canada

Observed by
Don Ross
Tue, 25 Feb 2025 12:54:00 -0500

West Branch DuPage River at Hillside : West Branch DuPage River

Naperville, Illinois, United States

Observed by
Shari Buma
Tue, 25 Feb 2025 11:41:00 -0600

West Branch Du Page River : West Branch Du Page River

Naperville, Illinois, United States

Observed by
Lawrence Hjorth
Tue, 25 Feb 2025 11:35:00 -0600

Longmarsh Lane : Longmarsh Lane

London, Greenwich, United Kingdom

Observed by
Cristian Popescu
Tue, 25 Feb 2025 17:17:00 +0000

Dufferin Islands Nature Area : Niagara River

Ontario, Canada

Observed by
Hasmita Patel
Tue, 25 Feb 2025 12:04:00 -0500

Ferson Creek at Randall Road bike trail bridge : Ferson Creek

Saint Charles, Illinois, United States

Observed by
Rod Allen
Tue, 25 Feb 2025 10:52:00 -0600

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

Ontario, Canada

Observed by
Bhavika Vaghjiani
Tue, 25 Feb 2025 11:28:00 -0500

Oak Hill Park 2 (Downstream) : Pymmes Brook

London, Barnet, United Kingdom

Observed by
Eamonn Cannon
Tue, 25 Feb 2025 11:00:00 +0000

Bill's Bridge : Beverley Brook

London, Wandsworth, United Kingdom

Observed by
Shomari Rosalska
Tue, 25 Feb 2025 10:40:00 +0000

Rocks Lane Highways Bridge : Beverley Brook

London, Richmond upon Thames, United Kingdom

Observed by
Shomari Rosalska
Tue, 25 Feb 2025 10:15:00 +0000

St Joseph Creek Downers Grove : St Joseph Creek

Downers Grove, Illinois, United States

Observed by
Kathy Olson
Mon, 24 Feb 2025 17:56:00 -0600

Pioneer Tower Bridge : Grand River

Kitchener, Ontario, Canada

Observed by
Sabrina Jivani
Mon, 24 Feb 2025 17:40:00 -0500

South Branch of Kishwaukee River at N. 1st Street : South Branch of Kishwaukee River

Dekalb, Illinois, United States

Observed by
Patty Ruback
Mon, 24 Feb 2025 15:00:00 -0600

Big Rock Creek at Emmons Woods : Big Rock Creek

Plano, Illinois, United States

Observed by
Nancy Cinatl
Mon, 24 Feb 2025 14:55:00 -0600