/-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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103 Datapoints
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18 Observations
- Monitored since: 11 November 2023
- Last observation on: 17 February 2026
- Data collector: Julie Chadwick
Latest water quality data added
570,797 datapoints at 9,257 locations
+483 new locations added in the last 30 days
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View trends at this location
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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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101 Datapoints
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17 Observations
- Monitored since: 08 January 2024
- Last observation on: 17 February 2026
- Data collector: Anna Browne
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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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83 Datapoints
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11 Observations
- Monitored since: 15 November 2024
- Last observation on: 17 February 2026
- Data collector: Andrea Studzinski
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/-88.341601,41.933564,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationFerson Creek at Randall Road bike trail bridge
Ferson Creek, Saint Charles
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136 Datapoints
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18 Observations
- Monitored since: 15 December 2023
- Last observation on: 17 February 2026
- Data collector: Rod Allen
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/-88.352416,41.92857,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationCreek Bend Pond
Pond at Creek Bend Nature Center, Saint Charles
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119 Datapoints
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17 Observations
- Monitored since: 07 November 2023
- Last observation on: 17 February 2026
- Data collector: Lisa O'Brien
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/-87.933068,41.825396,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationfullersburg woods
Salt Creek, Oak Brook
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36 Datapoints
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13 Observations
- Monitored since: 11 November 2023
- Last observation on: 17 February 2026
- Data collector: Linda Cise
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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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95 Datapoints
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12 Observations
- Monitored since: 30 November 2024
- Last observation on: 17 February 2026
- Data collector: Darlene Garay
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/-88.255188,42.236498,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationLake Killarney outlet dam (Cary, IL, 60013)
Lake Killarney outlet dam (Cary, IL, 60013), Cary
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143 Datapoints
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12 Observations
- Monitored since: 20 November 2024
- Last observation on: 17 February 2026
- Data collector: Eberhard Veit
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/-88.250101,42.238197,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationLake Killarney to Silver Lake Creek (Cary, IL, 60013)
Lake Killarney to Silver Lake Creek (Cary, IL, 60013), Cary
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135 Datapoints
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12 Observations
- Monitored since: 20 November 2024
- Last observation on: 17 February 2026
- Data collector: Eberhard Veit
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/-88.129609,41.91014,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationThunderbird Trail Crossing of Kline Creek
Kline Creek, Carol Stream
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159 Datapoints
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18 Observations
- Monitored since: 30 November 2023
- Last observation on: 17 February 2026
- Data collector: David Bohnsack
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/-88.347631,42.174101,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationWoods Creek at Brookside Pedestrian Bridge
Woods Creek at Brookside Pedestrian Bridge, Algonquin
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91 Datapoints
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14 Observations
- Monitored since: 20 December 2024
- Last observation on: 17 February 2026
- Data collector: Brad Andresen
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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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128 Datapoints
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17 Observations
- Monitored since: 10 December 2023
- Last observation on: 17 February 2026
- Data collector: Jane Schulten
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/-88.99447,40.533747,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationBradford Lane Retention Basin #1
Retention basin connecting to Sugar Creek , Normal
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94 Datapoints
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12 Observations
- Monitored since: 14 July 2025
- Last observation on: 17 February 2026
- Data collector: Katie Vogler
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/-88.120962,41.931081,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationLies Road Crossing of Kline Creek
Kline Creek, Carol Stream
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157 Datapoints
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18 Observations
- Monitored since: 30 November 2023
- Last observation on: 17 February 2026
- Data collector: David Bohnsack
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/-88.308835,42.151799,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationDixie Creek at Gaslight Dr
Dixie Creek at Gaslight Dr, Algonquin
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92 Datapoints
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14 Observations
- Monitored since: 20 December 2024
- Last observation on: 17 February 2026
- Data collector: Brad Andresen
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/-88.316088,42.169037,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationRatt Creek at Hanson Rd
Ratt Creek at Hanson Rd, Algonquin
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95 Datapoints
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14 Observations
- Monitored since: 20 December 2024
- Last observation on: 17 February 2026
- Data collector: Brad Andresen
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/-88.078616,41.811882,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationArbor Lake at Morton Arb
Arbor Lake , Lisle
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114 Datapoints
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18 Observations
- Monitored since: 01 November 2023
- Last observation on: 17 February 2026
- Data collector: Lisa Warren
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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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40 Datapoints
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5 Observations
- Monitored since: 15 May 2025
- Last observation on: 17 February 2026
- Data collector: Linda Heuser
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/-87.968811,41.872187,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationVilla Ave Bridge at Sugar Creek
Sugar Creek, Villa Park
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190 Datapoints
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18 Observations
- Monitored since: 10 November 2023
- Last observation on: 17 February 2026
- Data collector: Joe Neilly
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/-81.469138,28.485893,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationKC's Dock
Lake Cane, Orlando
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1,797 Datapoints
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159 Observations
- Monitored since: 24 October 2021
- Last observation on: 16 February 2026
- Data collector: Shannon Monahan
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