Dataset

Winter Chloride Watch

Dataset by National Great Rivers

Dataset summary

Observations

  • 28 November 2025

    DuPage River at Riverwalk South Covered Bridge by Shelley Birdsong

    Cool day. Winter storm coming in. Construction on Washington bridge, just north of collection site, now complete.

  • 28 November 2025

    DuPage River Park - Small Pond - Site 2 by Leah Gladkowski

    Water was very low, but clear. Could see what looked like minnows or tadpoles swimming around.

  • 28 November 2025

    Sangamon River Forest Preserve by Bruce M Colravy

    Area remains under severe drought.

  • 28 November 2025

    Sangamon River Forest Preserve site by Bruce M Colravy

    Area remains under extreme drought.

  • 28 November 2025

    Lake of the Woods Forest Preserve by Bruce M Colravy

    This location had a fish kill last week that was investigated by IDNR. Attached photos are from that event. Suspect low DO, but I can’t say for sure. Area remains under extreme drought.

  • 28 November 2025

    River Bend Forest Preserve site by Bruce M Colravy

    More tree fall at site than previously. Area remains in extreme drought.

  • 28 November 2025

    Blackberry Creek Forest Preserve by Ryan Kriz

    The first major snowfall in the area for the season began several hours after taking this water sample.

  • 28 November 2025

    Big Rock Forest Preserve by Ryan Kriz

    The first major snowfall in the area for the season began several hours after taking this water sample.

  • 27 November 2025

    Spring Brook Creek - N of Meacham Grove FP by Karen Snyder

    Both test strips tested the same at 164 ppm

  • 27 November 2025

    DuPage River Electric Park Launch by Lea Rodbarry

    5" snow expected in 2 days

  • 26 November 2025

    West branch of DuPage river at Beecher Rd, Winfield by Chris Thomson