/-88.300376,41.969624,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
Jon Duerr Forest Preserve Fox River
Fox River, South Elgin
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99 Datapoints
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17 Observations
- Monitored since: 11 November 2023
- Last observation on: 15 January 2026
- Data collector: Julie Chadwick
Latest water quality data added
559,172 datapoints at 9,187 locations
+486 new locations added in the last 30 days
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View trends at this location
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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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17 Datapoints
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3 Observations
- Monitored since: 16 November 2025
- Last observation on: 15 January 2026
- Data collector: Patricia Weikersheimer
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/-87.7531,41.923,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationOswego
Fox River, Chicago
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23 Datapoints
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3 Observations
- Monitored since: 12 November 2025
- Last observation on: 15 January 2026
- Data collector: Lara Owczarski
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/-88.301711,41.885825,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationFox River
Fox River, Geneva
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91 Datapoints
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15 Observations
- Monitored since: 08 January 2024
- Last observation on: 15 January 2026
- Data collector: Anna Browne
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/-88.071096,41.639601,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationIsle la Cache Canoe Launch
Des Plaines River, Romeoville
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14 Datapoints
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3 Observations
- Monitored since: 10 November 2025
- Last observation on: 15 January 2026
- Data collector: Sharon Dyrkacz
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/-88.16305,41.869344,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationWest branch of DuPage river at Beecher Rd, Winfield
West branch of DuPage river, Winfield
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81 Datapoints
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17 Observations
- Monitored since: 15 November 2023
- Last observation on: 14 January 2026
- Data collector: Chris Thomson
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/-88.050718,41.890335,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationEast DuPage river at St. Charles
East branch DuPage River, Glen Ellyn
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81 Datapoints
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17 Observations
- Monitored since: 15 November 2023
- Last observation on: 14 January 2026
- Data collector: Chris Thomson
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/-88.028223,41.768362,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationPrentiss Creek at Prentiss Street
Prentiss Creek, Downers Grove
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19 Datapoints
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3 Observations
- Monitored since: 17 November 2025
- Last observation on: 14 January 2026
- Data collector: Jeanne Groat
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/-0.5741,51.211231,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationBroadford Road Bridge
River Wey, Guildford
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503 Datapoints
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25 Observations
- Monitored since: 07 July 2025
- Last observation on: 14 January 2026
- Data collector: Paul Holmes-Higgin
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/-91.612556,41.560417,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationBelgum Grove
Dirty Face Creek #2 (W), Iowa City
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65 Datapoints
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4 Observations
- Monitored since: 26 November 2025
- Last observation on: 14 January 2026
- Data collector: Olivia Gibbs
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/-91.6085,41.561056,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationBelgum Grove
Dirty Face Creek #1 (E), Iowa City
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51 Datapoints
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3 Observations
- Monitored since: 26 November 2025
- Last observation on: 14 January 2026
- Data collector: Olivia Gibbs
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/-0.305922,51.40784,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationSaipem S1 - Kingston Chamber of Commerce
Hogsmill, London
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118 Datapoints
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6 Observations
- Monitored since: 12 March 2025
- Last observation on: 14 January 2026
- Data collector: Georgina Fauconier
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/-0.182276,51.626908,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationWhetstone Stray
Dollis Brook , London
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250 Datapoints
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16 Observations
- Monitored since: 07 November 2024
- Last observation on: 14 January 2026
- Data collector: Judith Howlett
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/-0.18321,51.635848,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationBrook Farm Open Space
Dollis Brook , London
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215 Datapoints
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15 Observations
- Monitored since: 07 November 2024
- Last observation on: 14 January 2026
- Data collector: Judith Howlett
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/-89.124076,41.543885,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationApple Orchard Park - Mendota Creek
Little Vermillion River, Mendota
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112 Datapoints
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16 Observations
- Monitored since: 22 November 2022
- Last observation on: 13 January 2026
- Data collector: Amy Brewer
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/-89.087019,41.519445,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationSnyder's Grove
Little Vermillion River, Mendota
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102 Datapoints
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15 Observations
- Monitored since: 21 November 2022
- Last observation on: 13 January 2026
- Data collector: Amy Brewer
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/-88.123934,41.862033,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationWinfield Creek at Emerson School
Winfield Creek, Wheaton
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116 Datapoints
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17 Observations
- Monitored since: 06 December 2023
- Last observation on: 13 January 2026
- Data collector: Maureen Keil
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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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132 Datapoints
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17 Observations
- Monitored since: 18 November 2023
- Last observation on: 13 January 2026
- Data collector: Richard Whitney
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/-89.494913,40.676399,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationFarmdale Reservoir
Farm Creek, Peoria
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59 Datapoints
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4 Observations
- Monitored since: 06 October 2025
- Last observation on: 13 January 2026
- Data collector: Robert Rowe
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/-89.689465,40.828807,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationKickapoo Creek at Leslie Rutherford Park
Kickapoo Creek , Dunlap
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88 Datapoints
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10 Observations
- Monitored since: 04 December 2024
- Last observation on: 13 January 2026
- Data collector: Robert Rowe
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