McDowell Grove forest preserve

West branch DuPage river

Naperville, Illinois, United States

slow moving river

Location created by
Dean Malone
  • Group: Winter Chloride Watchers
  • Site ID: 41°47'44.9"N 88°11'03.1"W
  • Lat: 41.796698
  • Lng: -88.1816769
  • Waterbody Type: River
  • Timezone: America/Chicago

Latest photos

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Observation tests summary

Air temperature °C
3.3 Latest
4.3 Average
Chloride ppm
220.0 Latest
229.7 Average

Ice On

Ice Off

  • 2023-12-17