/-88.160541,41.697109,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
Springbrook Water Reclamation Center Upstream
DuPage River, Bolingbrook
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111 Datapoints
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18 Observations
- Monitored since: 15 November 2023
- Last observation on: 13 February 2026
- Data collector: Amy Wrigley
Latest water quality data added
569,901 datapoints at 9,258 locations
+457 new locations added in the last 30 days
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View trends at this location
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/-64.376368,45.94853,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationJoe Brook
Joe Brook, Sackville
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46 Datapoints
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4 Observations
- Monitored since: 15 January 2026
- Last observation on: 13 February 2026
- Data collector: Miranda Corkum
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/-64.3558,45.9272,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationSilver Lake
Silver Lake, Sackville
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53 Datapoints
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4 Observations
- Monitored since: 15 January 2026
- Last observation on: 13 February 2026
- Data collector: Miranda Corkum
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/-88.308348,41.870064,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationFabyan Forest Preserve
Fox River, Geneva
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220 Datapoints
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39 Observations
- Monitored since: 13 January 2022
- Last observation on: 13 February 2026
- Data collector: Maureen Huey
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/-87.701724,41.973181,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationRiver Park Boathouse
Chicago River, Chicago
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305 Datapoints
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44 Observations
- Monitored since: 02 January 2023
- Last observation on: 13 February 2026
- Data collector: Susanna Lang
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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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201 Datapoints
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23 Observations
- Monitored since: 25 July 2025
- Last observation on: 13 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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197 Datapoints
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22 Observations
- Monitored since: 22 August 2025
- Last observation on: 13 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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195 Datapoints
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23 Observations
- Monitored since: 22 August 2025
- Last observation on: 13 February 2026
- Data collector: Allison Weber
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/-88.348618,40.279619,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationSangamon River Forest Preserve
Wildcat Slough, Mahomet
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274 Datapoints
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31 Observations
- Monitored since: 06 November 2022
- Last observation on: 13 February 2026
- Data collector: Bruce M Colravy
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/-88.351042,40.279051,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationSangamon River Forest Preserve site
Sangamon River, Fisher
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460 Datapoints
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47 Observations
- Monitored since: 07 November 2021
- Last observation on: 13 February 2026
- Data collector: Bruce M Colravy
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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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96 Datapoints
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16 Observations
- Monitored since: 08 January 2024
- Last observation on: 13 February 2026
- Data collector: Anna Browne
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/-88.387113,40.204014,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationLake of the Woods Forest Preserve
Sangamon River, Mahomet
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416 Datapoints
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46 Observations
- Monitored since: 07 November 2021
- Last observation on: 13 February 2026
- Data collector: Bruce M Colravy
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/-88.420136,40.186875,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationRiver Bend Forest Preserve site
Sangamon River, Mahomet
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421 Datapoints
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46 Observations
- Monitored since: 07 November 2021
- Last observation on: 13 February 2026
- Data collector: Bruce M Colravy
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/-0.791714,51.080065,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationRadford Park - East Bridge
River Wey, Liphook
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50 Datapoints
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5 Observations
- Monitored since: 21 September 2025
- Last observation on: 13 February 2026
- Data collector: Kat Kavanagh
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/0.008566,51.608522,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this location9 Gordon Ave E4
The Ching, London
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1,282 Datapoints
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86 Observations
- Monitored since: 16 November 2023
- Last observation on: 13 February 2026
- Data collector: Alistair Young
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/0.009555,51.613892,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationHighams Park Lake
The Ching, London
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1,244 Datapoints
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87 Observations
- Monitored since: 17 January 2024
- Last observation on: 13 February 2026
- Data collector: Alistair Young
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/-90.695502,40.473087,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationWigwam Hollow Creek, beside Indian Trail St, Macomb.
Wigwam Hollow Creek, Macomb
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16 Datapoints
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2 Observations
- Monitored since: 30 January 2026
- Last observation on: 12 February 2026
- Data collector: Jumoke Ogunremi
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/-90.678549,40.447836,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationKilljordan creek
Stream, Macomb
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11 Datapoints
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2 Observations
- Monitored since: 31 January 2026
- Last observation on: 12 February 2026
- Data collector: Jumoke Ogunremi
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/-75.705296,44.625068,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationMacJohnson Wildlife Area
Buells Creek Reservoir, Brockville
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84 Datapoints
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7 Observations
- Monitored since: 08 November 2025
- Last observation on: 12 February 2026
- Data collector: Nathan Belisle
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/-90.145741,32.32482,16,0,0/380x220@2x?access_token=pk.eyJ1Ijoid2F0ZXJyYW5nZXJzIiwiYSI6ImNtMG5zdzhhMjAxMnkya3IzZHVybzlxMDEifQ.3GdXd13tReOaKwengLTZTg)
View trends at this locationLeFleurs Bluff State Park
Pearl River, Jackson
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966 Datapoints
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62 Observations
- Monitored since: 12 June 2020
- Last observation on: 12 February 2026
- Data collector: Abby Braman
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