/0.019638,51.626279,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
Whitehall Outfall 5b
River Ching, Buckhurst Hill
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508 Datapoints
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43 Observations
- Monitored since: 14 March 2025
- Last observation on: 16 February 2026
- Data collector: Harrison Tremain
Latest water quality data added
570,579 datapoints at 9,258 locations
+472 new locations added in the last 30 days
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View trends at this location
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View trends at this location
Whitehall Outfall 5a
River Ching, Buckhurst Hill
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530 Datapoints
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43 Observations
- Monitored since: 14 March 2025
- Last observation on: 16 February 2026
- Data collector: Harrison Tremain
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/-88.358725,42.203535,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationWoodscreek Park: 3 Pipe Inlet, Ackman Rd and Golf Course Rd, Crystal Lake, Il
Woodscreek , Crystal Lake
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106 Datapoints
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9 Observations
- Monitored since: 27 November 2024
- Last observation on: 15 February 2026
- Data collector: Songjie Su
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/-88.184681,41.676754,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationRiverview Farmstead Preserve Naperville IL South of 111th St & Book Rd
West Branch Dupage River, Naperville
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37 Datapoints
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4 Observations
- Monitored since: 24 November 2025
- Last observation on: 15 February 2026
- Data collector: Thomas Cowan
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/-87.6383,41.9032,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationKane County Forest Preserve near Barnes Rd
Blackberry Creek, Chicago
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34 Datapoints
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2 Observations
- Monitored since: 27 December 2025
- Last observation on: 15 February 2026
- Data collector: Jane Davis
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/-87.64309,41.629013,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationForest Preserves of Cook County - Kickapoo Woods
Little Calumet River, Harvey
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81 Datapoints
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12 Observations
- Monitored since: 26 November 2024
- Last observation on: 15 February 2026
- Data collector: David Schmid
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/-88.181745,41.796592,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationMc Dowell Forest Preserve
the DuPage River, West Branch, Naperville
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28 Datapoints
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4 Observations
- Monitored since: 17 November 2025
- Last observation on: 15 February 2026
- Data collector: shirley watters
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/-88.0239,41.768231,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationPrentiss Creek in Downers Grove (1911 Prentiss St.)
Prentiss Creek, Downers Grove
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22 Datapoints
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4 Observations
- Monitored since: 16 November 2025
- Last observation on: 15 February 2026
- Data collector: Patricia Weikersheimer
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/-87.533433,41.640838,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationForest Preserves of Cook County - Burnham, Illinois
Powderhorn Lake, Burnham
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29 Datapoints
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5 Observations
- Monitored since: 15 November 2025
- Last observation on: 15 February 2026
- Data collector: David Schmid
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/-79.472449,42.999197,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationWellandport Community Park Boat Launch
Welland River, Wellandport
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95 Datapoints
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4 Observations
- Monitored since: 15 November 2025
- Last observation on: 15 February 2026
- Data collector: Kiersten Garside
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/-79.377819,42.978146,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationBecketts Bridge
Welland River, Fenwick
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98 Datapoints
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4 Observations
- Monitored since: 16 November 2025
- Last observation on: 15 February 2026
- Data collector: Kiersten Garside
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/0.016257,51.621835,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationNewgate Street
The Ching, Buckhurst Hill
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663 Datapoints
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73 Observations
- Monitored since: 19 July 2024
- Last observation on: 15 February 2026
- Data collector: Kat Kavanagh
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/0.019402,51.625457,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationD/S Whitehall Rd
The Ching, Buckhurst Hill
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691 Datapoints
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75 Observations
- Monitored since: 19 July 2024
- Last observation on: 15 February 2026
- Data collector: Kat Kavanagh
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/0.019922,51.626392,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationWhitehall Outfalls
The Ching, Buckhurst Hill
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695 Datapoints
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74 Observations
- Monitored since: 19 July 2024
- Last observation on: 15 February 2026
- Data collector: Kat Kavanagh
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/0.000755,51.604636,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationBeech Hall
The Ching, London
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785 Datapoints
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74 Observations
- Monitored since: 08 December 2023
- Last observation on: 15 February 2026
- Data collector: Alistair Young
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/0.000129,51.604332,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationBeech Hall Crescent CSO
River Ching, London
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764 Datapoints
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59 Observations
- Monitored since: 05 November 2024
- Last observation on: 15 February 2026
- Data collector: Martha Jeffery
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/-0.202271,51.624755,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationDarlands Lake (Downstream)
Folly Brook/Dollis Brook, London
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307 Datapoints
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36 Observations
- Monitored since: 21 May 2023
- Last observation on: 15 February 2026
- Data collector: Alistair Young
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/-0.207867,51.625002,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationDarlands Lake (Upstream)
Folly Brook/Dollis Brook, London
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305 Datapoints
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36 Observations
- Monitored since: 21 May 2023
- Last observation on: 15 February 2026
- Data collector: Alistair Young
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/-88.387628,41.831276,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationLake Run at Nelson Lake in Dick Young Forest Preserve
Lake Run, Batavia
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90 Datapoints
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17 Observations
- Monitored since: 28 November 2023
- Last observation on: 14 February 2026
- Data collector: Maureen Mrenna
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/0.025654,51.63776,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationDownstream of Connaught Water
The Ching, Buckhurst Hill
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775 Datapoints
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62 Observations
- Monitored since: 23 November 2023
- Last observation on: 14 February 2026
- Data collector: Alistair Young
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