/-88.164597,41.543694,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
Rock Run Creek
Rock Run Creek, Joliet
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133 Datapoints
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19 Observations
- Monitored since: 12 November 2023
- Last observation on: 10 February 2026
- Data collector: Andy Neill
Latest water quality data added
569,037 datapoints at 9,388 locations
+470 new locations added in the last 30 days
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View trends at this location
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/-87.771857,41.990103,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationNorth Branch Chicago River at Edgebrook Woods
North Branch Chicago River, Chicago
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172 Datapoints
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27 Observations
- Monitored since: 17 December 2022
- Last observation on: 10 February 2026
- Data collector: Alan Matson
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/-1.556001,53.804558,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationGarstang
Field Store, Leeds
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6 Datapoints
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1 Observations
- Monitored since: 10 February 2026
- Last observation on: 10 February 2026
- Data collector: Keeley McCabe
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/-0.002149,51.51821,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationTidal River Lea
River Lea, London
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9 Datapoints
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1 Observations
- Monitored since: 10 February 2026
- Last observation on: 10 February 2026
- Data collector: Cody Dock
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/-0.002618,51.518497,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationBund
River Lea, London
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8 Datapoints
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1 Observations
- Monitored since: 10 February 2026
- Last observation on: 10 February 2026
- Data collector: Cody Dock
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/-0.003728,51.519238,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationDock
River Lea, London
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9 Datapoints
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1 Observations
- Monitored since: 10 February 2026
- Last observation on: 10 February 2026
- Data collector: Cody Dock
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/-123.410381,48.634912,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationSite 1 Culvert
Reay Creek, North Saanich
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188 Datapoints
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22 Observations
- Monitored since: 25 July 2025
- Last observation on: 09 February 2026
- Data collector: Allison Weber
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/-123.411054,48.635359,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationSite 2 Metal Bridge
Reay Creek, North Saanich
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184 Datapoints
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21 Observations
- Monitored since: 22 August 2025
- Last observation on: 09 February 2026
- Data collector: Allison Weber
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/-123.41436,48.637935,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationFrost Avenue
Reay Creek, Sidney
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184 Datapoints
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22 Observations
- Monitored since: 22 August 2025
- Last observation on: 09 February 2026
- Data collector: Allison Weber
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/-88.183973,41.829393,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationHarry J. Wolf
Spring Brook Creek, Warrenville
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116 Datapoints
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12 Observations
- Monitored since: 12 November 2024
- Last observation on: 09 February 2026
- Data collector: Harry Wolf
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/-88.201933,41.938488,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationTurnmill Pond - Smythe Settlement
Turnmill Pond, West Chicago
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136 Datapoints
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17 Observations
- Monitored since: 29 November 2023
- Last observation on: 09 February 2026
- Data collector: Steve Slivka
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/-88.199165,41.94358,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationArmy Trail West Pond - Smythe Settlement
Army Trail West Pond, West Chicago
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138 Datapoints
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17 Observations
- Monitored since: 29 November 2023
- Last observation on: 09 February 2026
- Data collector: Steve Slivka
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/-88.197062,41.938536,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationTrinity South Pond - Smythe Settlement
Trinity South Pond, West Chicago
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143 Datapoints
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17 Observations
- Monitored since: 29 November 2023
- Last observation on: 09 February 2026
- Data collector: Steve Slivka
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/-0.275946,51.397262,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationBerrylands Bridge
Hogsmill, London
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286 Datapoints
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17 Observations
- Monitored since: 20 June 2024
- Last observation on: 09 February 2026
- Data collector: Georgina Fauconier
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/-1.496249,53.840278,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationUpper Lake East
Roundhay Park : Upper Lake, Leeds
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296 Datapoints
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15 Observations
- Monitored since: 26 January 2025
- Last observation on: 09 February 2026
- Data collector: Susan Tuffin
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/-0.29816,51.405203,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationS2
Hogsmill, London
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63 Datapoints
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4 Observations
- Monitored since: 01 April 2025
- Last observation on: 09 February 2026
- Data collector: Adham Ghali
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/-0.189478,51.617261,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationFolly pre confluence
Folly Brook, London
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256 Datapoints
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16 Observations
- Monitored since: 05 February 2025
- Last observation on: 09 February 2026
- Data collector: Dianne Murphy
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/-0.188778,51.616235,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationOutfall at RMI Site
Dollis Brook , London
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191 Datapoints
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11 Observations
- Monitored since: 15 June 2025
- Last observation on: 09 February 2026
- Data collector: Judith Howlett
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/-0.188847,51.616455,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationRiverside Park (Upstream)
Dollis Brook, London
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362 Datapoints
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32 Observations
- Monitored since: 20 May 2023
- Last observation on: 09 February 2026
- Data collector: Alistair Young
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/-0.189024,51.616017,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationRiverside Park (Downstream)
Dollis Brook, London
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337 Datapoints
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31 Observations
- Monitored since: 20 May 2023
- Last observation on: 09 February 2026
- Data collector: Alistair Young
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