Dataset

Winter Chloride Watch

Dataset by National Great Rivers

Dataset summary

Observations

  • 7 February 2026

    Main Street by JoAnn Schindler

    Ice at damn site so no water sample taken. Ice on edges of creek. Only one duck to be seen.

  • 7 February 2026

    Spring Creek at Anderson Gardens by Bob G.

    No recent salting events or significant melt-off

  • 6 February 2026

    Powers Creek by Luke Baldwin

    Because of low flow the sample had some sediment from the spring. Usually the water is flowing slightly and I can get a clear sample.

  • 6 February 2026

    Trout Pond Outlet by Luke Baldwin

    Water flow slower than usual.

  • 6 February 2026

    Prairie DuPont Creek @ Zingg Bridge by Greg Kimutis

    Deer tracks visible in snow on top of frozen creek.

  • 3 February 2026

    Spring Creek- RVC Amphitheater by SRES Student Environmental Organization

    Turbidity: 40 JTU Nitrite: 0 ppm

  • 3 February 2026

    Lisle Community Park Boat Launch near Short St on East Branch DuPage River by Christie McGuinn

  • 1 February 2026

    North Branch Chicago River at Edgebrook Woods by Alan Matson

    Still much snow but no new snow since last week. There was lots of salt on the streets which are now just wet so lots of runoff and drainage. River still frozen except for small ripple area at testing site.

  • 1 February 2026

    Saint Joseph Creek by Robert Swirsky

    Unable to sample, the water in the creek is frozen solid.

  • 1 February 2026

    Dry Run Creek in Lower Bradley Park by Robert Rowe

    Chloride was above the highest value on the conversion table. chloride tested 8.2 on the quantab strip, but conversion chart only went to 641.

  • 1 February 2026

    Molitor Bridge at Indian Creek by Sarah Ryerson

    Majority ice or no water, but under bridge some open water is present.

  • 1 February 2026

    East Branch DuPage River at Churchill Woods by Beth Peluse

  • 1 February 2026

    West College Drive (Rt 83) & S. 75 th Ave Palos Heights,Il 60463 by Kathy Janik

  • 1 February 2026

    Riverbank Neighbors - Berteau by Sean Carino

    Cold and overcast. Temperatures were in the mid-to-upper teens with northwest winds, creating a wind chill. No active precipitation was observed, and conditions felt like a typical, harsh mid-winter evening in Chicago. Water seems lower than usual