/-88.123934,41.862033,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
Winfield Creek at Emerson School
Winfield Creek, Wheaton
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167 Datapoints
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21 Observations
- Monitored since: 06 December 2023
- Last observation on: 18 May 2026
- Data collector: Maureen Keil
Latest water quality data added
612,162 datapoints at 9,522 locations
+689 new locations added in the last 30 days
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View trends at this location
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/-106.6811,52.1189,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationSpace on H
South Sask, River, Saskatoon
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252 Datapoints
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12 Observations
- Monitored since: 29 December 2025
- Last observation on: 18 May 2026
- Data collector: Krista Caspick
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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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928 Datapoints
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86 Observations
- Monitored since: 08 December 2023
- Last observation on: 18 May 2026
- Data collector: Alistair Young
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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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157 Datapoints
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19 Observations
- Monitored since: 19 November 2024
- Last observation on: 18 May 2026
- Data collector: Tom Prince
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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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910 Datapoints
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71 Observations
- Monitored since: 05 November 2024
- Last observation on: 18 May 2026
- Data collector: Martha Jeffery
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/-87.950642,41.637172,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationLong Run Creek - Homer Glen, IL
Long Run Creek, Homer Glen
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216 Datapoints
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21 Observations
- Monitored since: 24 November 2023
- Last observation on: 18 May 2026
- Data collector: Greg Vejvoda
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/-87.985357,41.654682,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationSchulenberg Prairie-Willoway Brook
Willoway Brook, Lemont
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61 Datapoints
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8 Observations
- Monitored since: 15 May 2025
- Last observation on: 18 May 2026
- Data collector: Linda Heuser
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/-2.96729,50.81031,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationChurn Bridge
Kit Brook, Axminster
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118 Datapoints
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4 Observations
- Monitored since: 11 February 2026
- Last observation on: 18 May 2026
- Data collector: Simon Browning
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/-1.053336,51.271694,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationBartons Mill
River Loddon, Basingstoke
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152 Datapoints
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12 Observations
- Monitored since: 15 January 2025
- Last observation on: 18 May 2026
- Data collector: Josh Bowes
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/-76.08356,44.531605,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationLeft side Lost Point
Red Horse Lake, Lyndhurst
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72 Datapoints
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6 Observations
- Monitored since: 20 May 2024
- Last observation on: 18 May 2026
- Data collector: Michael Seto
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/-88.172562,41.821449,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationWest Branch DuPage River
DuPage River, Warrenville
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120 Datapoints
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22 Observations
- Monitored since: 08 November 2023
- Last observation on: 17 May 2026
- Data collector: Ken List
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/-88.146152,41.827813,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationHerrick Lake
Herrick Lake, Naperville
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101 Datapoints
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22 Observations
- Monitored since: 08 November 2023
- Last observation on: 17 May 2026
- Data collector: Ken List
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/-113.480345,54.336474,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationTawatinaw Valley Retreat dock
Tawatinaw Lake,
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159 Datapoints
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13 Observations
- Monitored since: 03 August 2023
- Last observation on: 17 May 2026
- Data collector: Shawna Vollema
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/-88.174836,41.833729,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationBlackwell Forest Preserve Silver Lake
Silver Lake, Warrenville
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108 Datapoints
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22 Observations
- Monitored since: 08 November 2023
- Last observation on: 17 May 2026
- Data collector: Ken List
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/-84.392966,46.71839,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationGoulais Mission Cemetery
Goulais River, Goulais River
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35 Datapoints
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1 Observations
- Monitored since: 17 May 2026
- Last observation on: 17 May 2026
- Data collector: Jenn C
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/-84.348898,46.730616,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationBridge on Highway 17
Goulais River, Goulais River
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38 Datapoints
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1 Observations
- Monitored since: 17 May 2026
- Last observation on: 17 May 2026
- Data collector: Jenn C
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/-84.285064,46.717384,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationTurmaine Road
Goulais River, Goulais River
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32 Datapoints
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1 Observations
- Monitored since: 17 May 2026
- Last observation on: 17 May 2026
- Data collector: Jenn C
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/-84.089248,46.746845,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationBridge on Highway 556
Goulais River, Searchmont
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40 Datapoints
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1 Observations
- Monitored since: 17 May 2026
- Last observation on: 17 May 2026
- Data collector: Jenn C
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/-84.050372,46.775824,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationBridge on Highway 532
Goulais River , Searchmont
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41 Datapoints
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1 Observations
- Monitored since: 17 May 2026
- Last observation on: 17 May 2026
- Data collector: Jenn C
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/-83.971686,46.855401,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationGoulais Chutes
Goulais River
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38 Datapoints
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1 Observations
- Monitored since: 17 May 2026
- Last observation on: 17 May 2026
- Data collector: Jenn C
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