/-88.141622,41.712412,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
Knoch Knolls
West Branch of DuPage River, Naperville
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15 Datapoints
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2 Observations
- Monitored since: 05 November 2025
- Last observation on: 15 April 2026
- Data collector: LORRAINE Krzywosz
Latest water quality data added
595,099 datapoints at 9,438 locations
+608 new locations added in the last 30 days
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View trends at this location
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/-90.428467,42.407667,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationGAlena River
Galena River, Galena
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77 Datapoints
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13 Observations
- Monitored since: 18 December 2024
- Last observation on: 14 April 2026
- Data collector: Madelynn Wilharm
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/-88.054004,41.845109,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationGlen Crest Creek - Lincoln Hill
Glen Crest Creek, Glen Ellyn
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170 Datapoints
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20 Observations
- Monitored since: 18 November 2023
- Last observation on: 14 April 2026
- Data collector: Richard Whitney
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/-1.011325,54.051818,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationFoss Footbridge upstream of Walbutts
River Foss, York
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8 Datapoints
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1 Observations
- Monitored since: 14 April 2026
- Last observation on: 14 April 2026
- Data collector: Steph Bond
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/-74.46773,45.589083,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationOttawa River
Ottawa River, Chute à Blondeau
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662 Datapoints
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67 Observations
- Monitored since: 13 April 2019
- Last observation on: 14 April 2026
- Data collector: Inga Chisholm
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/0.500063,50.87807,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationCrowhurst
Powdermill Stream, Battle
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32 Datapoints
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3 Observations
- Monitored since: 03 February 2026
- Last observation on: 14 April 2026
- Data collector: Weldon Reece
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/0.00869,51.618456,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationHatch Roundabout - Downstream
The Ching, London
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461 Datapoints
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35 Observations
- Monitored since: 21 March 2025
- Last observation on: 14 April 2026
- Data collector: Harrison Tremain
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/0.008952,51.618979,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationHatch Roundabout - Upstream
The Ching, London
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475 Datapoints
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36 Observations
- Monitored since: 21 March 2025
- Last observation on: 14 April 2026
- Data collector: Harrison Tremain
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/-88.854,40.44601,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationKickapoo Creek at Bridge on N County Road 2150 E
Kickapoo Creek, Bloomington
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33 Datapoints
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2 Observations
- Monitored since: 25 March 2026
- Last observation on: 13 April 2026
- Data collector: Paul Garris
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/-88.930954,40.503133,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationSugar Creek at Tipton Trails Park
Sugar Creek, Bloomington
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33 Datapoints
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2 Observations
- Monitored since: 25 March 2026
- Last observation on: 13 April 2026
- Data collector: Paul Garris
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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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150 Datapoints
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20 Observations
- Monitored since: 08 November 2023
- Last observation on: 13 April 2026
- Data collector: Jim Baum
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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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161 Datapoints
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19 Observations
- Monitored since: 10 December 2023
- Last observation on: 13 April 2026
- Data collector: Jane Schulten
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/-88.220193,41.790977,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationBayou Path Dr Stream in Atwater Subdivision
Stream, Naperville
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199 Datapoints
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20 Observations
- Monitored since: 21 December 2023
- Last observation on: 13 April 2026
- Data collector: Lisa Hjorth
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/-87.955427,41.813507,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationLake Charles at Beach Inlet
Lake Charles at Beach Inlet, Westmont
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109 Datapoints
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14 Observations
- Monitored since: 30 November 2024
- Last observation on: 12 April 2026
- Data collector: Darlene Garay
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/-123.318189,48.432348,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationClose to 3.5
Creek , Victoria
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28 Datapoints
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2 Observations
- Monitored since: 26 September 2024
- Last observation on: 12 April 2026
- Data collector: val aloian
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/-123.308862,48.429861,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationBowker Creek: end of the riffle at Monteith
Bowker Creek, Victoria
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412 Datapoints
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35 Observations
- Monitored since: 15 October 2024
- Last observation on: 12 April 2026
- Data collector: Eldan Goldenberg
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/-123.316398,48.430964,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this location3.4 Wetlands (fka Duck Ponds)
Bowker Creek, Victoria
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895 Datapoints
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114 Observations
- Monitored since: 16 November 2021
- Last observation on: 12 April 2026
- Data collector: Eldan Goldenberg
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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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850 Datapoints
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66 Observations
- Monitored since: 05 November 2024
- Last observation on: 12 April 2026
- Data collector: Martha Jeffery
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/-77.155588,43.93774,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationCherry Valley Lions Memorial Park Boat Launch Dock
Tributary entering SE End of East Lake, Cherry Valley
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653 Datapoints
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59 Observations
- Monitored since: 28 April 2017
- Last observation on: 12 April 2026
- Data collector: Don Ross
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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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866 Datapoints
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81 Observations
- Monitored since: 08 December 2023
- Last observation on: 12 April 2026
- Data collector: Alistair Young
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