/-0.499305,51.307136,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
Newark Lock downstream
River Wey, Ripley
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864 Datapoints
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41 Observations
- Monitored since: 25 September 2022
- Last observation on: 23 January 2026
- Data collector: Heather Dougherty
Latest water quality data added
561,228 datapoints at 9,365 locations
+441 new locations added in the last 30 days
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View trends at this location
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/-0.511466,51.305788,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationNewark Lock upstream
River Wey, Send
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879 Datapoints
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42 Observations
- Monitored since: 25 September 2022
- Last observation on: 23 January 2026
- Data collector: Heather Dougherty
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/-0.463752,51.337363,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationByfleet beach
River Wey, West Byfleet
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80 Datapoints
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5 Observations
- Monitored since: 24 October 2025
- Last observation on: 23 January 2026
- Data collector: Alistair Young
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/-88.428108,41.957764,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationWoodland Rd. Creek
Woodland Rd. Creek, Saint Charles
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84 Datapoints
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13 Observations
- Monitored since: 24 November 2023
- Last observation on: 22 January 2026
- Data collector: LESLIE MARTIN
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/-88.342833,42.414728,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationNippersink Creek at the Keystone Landing in McHenry County Conservation District's Glacial Park Conservation Area
Nippersink Creek, Ringwood
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119 Datapoints
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14 Observations
- Monitored since: 30 November 2024
- Last observation on: 22 January 2026
- Data collector: Sue Rose
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/-87.951629,41.865136,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationSalt Creek S Elmhurst canoe launch
Salt Creek, Elmhurst
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73 Datapoints
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10 Observations
- Monitored since: 15 November 2024
- Last observation on: 22 January 2026
- Data collector: Andrea Studzinski
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/0.185419,51.568335,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationFrazer Close
River Rom, Romford
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35 Datapoints
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5 Observations
- Monitored since: 12 September 2025
- Last observation on: 22 January 2026
- Data collector: Harrison Tremain
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/0.232809,51.550871,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationHacton Lane Road Bridge
River Ingrebourne, Upminster
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35 Datapoints
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5 Observations
- Monitored since: 12 September 2025
- Last observation on: 22 January 2026
- Data collector: Harrison Tremain
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/0.21178,51.56467,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationGrey Towers Allotment
River Ravensbourne, Hornchurch
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35 Datapoints
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5 Observations
- Monitored since: 12 September 2025
- Last observation on: 22 January 2026
- Data collector: Harrison Tremain
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/0.187391,51.589546,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationRaphael Park
Black’s Brook, Romford
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35 Datapoints
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5 Observations
- Monitored since: 12 September 2025
- Last observation on: 22 January 2026
- Data collector: Harrison Tremain
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/0.173916,51.011389,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationHadlow Down
Upper River Uck, Uckfield
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20 Datapoints
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1 Observations
- Monitored since: 22 January 2026
- Last observation on: 22 January 2026
- Data collector: Jo Owens
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/-88.147262,41.769768,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationDuPage River at Riverwalk South Covered Bridge
DuPage River , Naperville
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183 Datapoints
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18 Observations
- Monitored since: 14 December 2023
- Last observation on: 21 January 2026
- Data collector: Shelley Birdsong
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/-88.351107,41.930044,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationFerson Creek at LeRoy Oakes FP Bridge
Ferson Creek, Saint Charles
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121 Datapoints
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17 Observations
- Monitored since: 08 November 2023
- Last observation on: 21 January 2026
- Data collector: Jim Baum
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/-88.001456,41.784994,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationCreek under Fairmount Ave, east side of bridge
Creek under Fairmount Ave, Downers Grove
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79 Datapoints
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12 Observations
- Monitored since: 19 November 2024
- Last observation on: 21 January 2026
- Data collector: Tom Prince
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/-88.308348,41.870064,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationFabyan Forest Preserve
Fox River, Geneva
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213 Datapoints
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38 Observations
- Monitored since: 13 January 2022
- Last observation on: 21 January 2026
- Data collector: Maureen Huey
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/-88.167772,41.53955,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationRock Run Preserve
Greenway Pond, Joliet
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14 Datapoints
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1 Observations
- Monitored since: 21 January 2026
- Last observation on: 21 January 2026
- Data collector: Catherine Offerman
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/-90.232365,38.960143,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationCreek at Merry Meadows
Rocky Fork Tributary, Godfrey
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104 Datapoints
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17 Observations
- Monitored since: 31 December 2023
- Last observation on: 21 January 2026
- Data collector: James Weiss
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/-88.161635,41.840783,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationSpring Brook in St. James Farm Forest Preserve
Spring Brook, Wheaton
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76 Datapoints
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14 Observations
- Monitored since: 11 December 2023
- Last observation on: 21 January 2026
- Data collector: Jay Gilbert
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/-88.187211,41.568517,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationLily Cache Creek
Lily Cache Creek, Plainfield
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306 Datapoints
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30 Observations
- Monitored since: 04 November 2021
- Last observation on: 21 January 2026
- Data collector: John Griffis
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/-87.5455,41.432656,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationPlum Creek at Klemme
Plum Creek at Klemme Rd, Crete
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117 Datapoints
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16 Observations
- Monitored since: 10 December 2023
- Last observation on: 21 January 2026
- Data collector: Jane Schulten
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