/-76.1859,44.721,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Big Rideau Lake: Klautz Pt
Portland, Ontario, Canada
Waterbody Type:Lake
Last observed: July 2, 2025 Monitored since: June 17, 2018
Locations
Locations are places where people have tested before. Click on any location report to view water health trends at that spot over time. What's this?
8,226 locations
+33 new sample locations added in the past 30 days
Lake
Last observed: July 2, 2025 Monitored since: June 17, 2018
/-76.1772674,44.7195563,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Big Rideau Lake: Little Lake - 2
Portland, Ontario, Canada
Waterbody Type:Lake
Last observed: July 2, 2025 Monitored since: July 8, 2019
/-74.7772158,45.0085305,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
St. Lawrence River: OPG Bay
Cornwall, Ontario, Canada
Waterbody Type:Bay
Last observed: July 1, 2025 Monitored since: July 1, 2025
/-79.4744561,43.8471078,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Pond: Carville Mill Park
Vaughan, Ontario, Canada
Waterbody Type:Pond
Last observed: July 1, 2025 Monitored since: October 27, 2024
/-79.4520005,43.8760202,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
/-79.3997866,43.8720821,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Creek: Beaver Creek
Richmond Hill, Ontario, Canada
Waterbody Type:Creek
Last observed: July 1, 2025 Monitored since: October 27, 2024
/-76.2038294,44.773214,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Big Rideau: Granary Cottage
Portland, Ontario, Canada
Waterbody Type:Lake
Last observed: July 1, 2025 Monitored since: May 24, 2025
/-90.1384019,32.3815199,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
White Oak Creek: White Oak Creek
Jackson, Mississippi, United States
Waterbody Type:Creek
Last observed: July 1, 2025 Monitored since: May 23, 2024
/-0.8044671,51.1639443,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
River Wey: Downstream of Frensham Mill
Frensham, Surrey, United Kingdom
Waterbody Type:River
Last observed: July 1, 2025 Monitored since: July 11, 2022
/-0.8318064,51.1402198,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
River Wey: Smithy Lane
Dockenfield, Hampshire, United Kingdom
Waterbody Type:River
Last observed: July 1, 2025 Monitored since: March 9, 2022
/-79.0686679,43.2577839,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Niagara River: Queen's Royal Park Beach
Ontario, Canada
Waterbody Type:River
Last observed: July 1, 2025 Monitored since: July 1, 2025
/-80.0658917,43.0929417,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Grand River: Private dock near Tuscarora Road and 6th Line
Ohsweken, Ontario, Canada
Waterbody Type:River
Last observed: June 30, 2025 Monitored since: June 30, 2025
/-81.274024,44.618711,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Lac Huron: Sauble Beach
Sauble Beach, Ontario, Canada
Waterbody Type:Lake
Last observed: June 30, 2025 Monitored since: June 30, 2025
/-79.0714359,43.0667872,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Niagara River: Dufferin Islands Nature Area
Ontario, Canada
Waterbody Type:River
Last observed: June 30, 2025 Monitored since: December 30, 2024
/-103.6367614,50.6734001,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Katepwa Lake Saskatchewan: Katepwa Lake Saskatchewan
Saskatchewan, Canada
Waterbody Type:Lake
Last observed: June 30, 2025 Monitored since: June 30, 2025
/-79.4992,43.6580001,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Humber River: Humber River at Magwood Sanctuary
Etobicoke, Ontario, Canada
Waterbody Type:River
Last observed: June 30, 2025 Monitored since: April 25, 2021
/-79.0942597,43.2606813,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Lake Ontario: Ryerson Park
Niagara On The Lake, Ontario, Canada
Waterbody Type:Lake
Last observed: June 30, 2025 Monitored since: May 27, 2025
/-79.1610389,43.150627,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Restored Wastewater Treatment: Niagara College Wetland
Niagara On The Lake, Ontario, Canada
Waterbody Type:Wetland
Last observed: June 30, 2025 Monitored since: May 27, 2025
/-1.7294474,52.6922783,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Tame: Elford Walled Garden
Lichfield District, Staffordshire, United Kingdom
Waterbody Type:River
Last observed: June 30, 2025 Monitored since: December 29, 2024
/-79.203186,42.8712779,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)
Lake Erie: Lorraine Bay East
Ontario, Canada
Waterbody Type:Lake
Last observed: June 30, 2025 Monitored since: September 1, 2020
/-1.4805579,53.7757259,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImY4Mzc4MTZkZDZkN2Y4YzFhMjA2MzQ3NDAyZjM0MjI1In0.jA6aLxZWzUm8bSBbumka4Q)