/-1.48103,53.812916,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
Arthur's Rein South Parkway
Wyke Beck, Leeds
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122 Datapoints
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10 Observations
- Monitored since: 28 May 2025
- Last observation on: 01 March 2026
- Data collector: Paul Doney
Latest water quality data added
578,274 datapoints at 9,350 locations
+543 new locations added in the last 30 days
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View trends at this location
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/-1.480858,53.815615,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationArthur's Rein Fearnville Playing Fields
Wyke Beck, Leeds
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126 Datapoints
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10 Observations
- Monitored since: 28 May 2025
- Last observation on: 01 March 2026
- Data collector: Paul Doney
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/0.019638,51.626279,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationWhitehall Outfall 5b
River Ching, Buckhurst Hill
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538 Datapoints
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45 Observations
- Monitored since: 14 March 2025
- Last observation on: 01 March 2026
- Data collector: Harrison Tremain
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View trends at this location
Whitehall Outfall 5a
River Ching, Buckhurst Hill
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560 Datapoints
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45 Observations
- Monitored since: 14 March 2025
- Last observation on: 01 March 2026
- Data collector: Harrison Tremain
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/-87.846235,41.928919,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationRiver Grove at Grand Ave
Des Plaines River, River Grove
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57 Datapoints
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9 Observations
- Monitored since: 17 February 2022
- Last observation on: 01 March 2026
- Data collector: Candice N. Garcia
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/-87.801506,41.954058,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationWesternmost bridge in Dunning Read Natural Area Park
Creek running through the Dunning Read Natural Area, Chicago
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27 Datapoints
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4 Observations
- Monitored since: 30 November 2025
- Last observation on: 01 March 2026
- Data collector: Erika Street Hopman
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/-88.116062,41.714489,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationDuPage River Park - Small Pond - Site 2
Pond, Naperville
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112 Datapoints
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10 Observations
- Monitored since: 30 November 2024
- Last observation on: 28 February 2026
- Data collector: Leah Gladkowski
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/-88.271778,41.751205,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationOakhurst Forest Preserve South Shore Dock
Lake Patterson, Aurora
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82 Datapoints
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17 Observations
- Monitored since: 25 November 2023
- Last observation on: 28 February 2026
- Data collector: DL Dosado
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/-87.695049,41.953546,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationCalifornia Park
Chicago River - North Branch, Chicago
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51 Datapoints
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4 Observations
- Monitored since: 22 November 2025
- Last observation on: 28 February 2026
- Data collector: Virginia Keith
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/-88.141622,41.712412,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationKnoch Knolls
Dupage River, Naperville
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113 Datapoints
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17 Observations
- Monitored since: 20 December 2023
- Last observation on: 28 February 2026
- Data collector: Mackenzie Kaehler
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/-90.669388,40.451007,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationMarvis Park
Killjordan creek, Macomb
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20 Datapoints
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2 Observations
- Monitored since: 08 February 2026
- Last observation on: 28 February 2026
- Data collector: Jumoke Ogunremi
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/-88.448932,41.789089,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationBlackberry Creek Hannaford Woods FP
Blackberry Creek at Hannaford Woods FP, Sugar Grove
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47 Datapoints
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9 Observations
- Monitored since: 22 December 2024
- Last observation on: 28 February 2026
- Data collector: Jenna Heller
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/-74.133088,45.405504,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationRuisseau Place du Parc Saint-Lazare
Décharge Saint-Lazare, Saint Lazare
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106 Datapoints
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8 Observations
- Monitored since: 30 June 2025
- Last observation on: 28 February 2026
- Data collector: Chantal Sauvé
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/-87.694112,41.957612,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationRiverbank Neighbors - Berteau
Chicago River, Chicago
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74 Datapoints
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10 Observations
- Monitored since: 18 November 2024
- Last observation on: 28 February 2026
- Data collector: Sean Carino
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/-88.184402,41.676823,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationWest Branch DuPage River
DuPage River, Naperville
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125 Datapoints
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17 Observations
- Monitored since: 03 December 2023
- Last observation on: 28 February 2026
- Data collector: Janet Knight
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/-87.968055,41.90504,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationSalt Creek Greenway Trail (just south of North Avenue)
Salt Creek, Villa Park
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37 Datapoints
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2 Observations
- Monitored since: 31 January 2026
- Last observation on: 28 February 2026
- Data collector: Robert Wagner
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/-88.028953,41.76865,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationDowners Grove
Prentiss Creek , Downers Grove
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57 Datapoints
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4 Observations
- Monitored since: 19 November 2025
- Last observation on: 28 February 2026
- Data collector: Chuck Montgomery
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/-88.135098,41.754418,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationPioneer Park Canoe launch
West DuPage River, Naperville
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47 Datapoints
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12 Observations
- Monitored since: 29 November 2024
- Last observation on: 28 February 2026
- Data collector: Mike Watson
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/-88.12681,41.740342,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationWest Branch Dupage River
WBDR, Naperville
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66 Datapoints
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10 Observations
- Monitored since: 07 December 2023
- Last observation on: 28 February 2026
- Data collector: Fred Girard
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/-89.968457,32.389602,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationPelahatchie Creek
Pelahatchie Bay, Brandon
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1,905 Datapoints
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130 Observations
- Monitored since: 27 April 2018
- Last observation on: 28 February 2026
- Data collector: Abby Braman
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