Dataset

Winter Chloride Watch

Dataset by National Great Rivers

Dataset summary

Observations

  • 3 January 2026

    Evans Field - Des Plaines River -Trail Marker 215 by Serena Pesch

  • 3 January 2026

    Canoe Launch by LORRAINE Krzywosz

    The pen was not cooperating on the note card. Quantab 5.6; Chloride 293

  • 2 January 2026

    Lake of the Woods Forest Preserve by Bruce M Colravy

    The area remains in severe drought.

  • 2 January 2026

    Thunderbird Trail Crossing of Klein Creek by David Bohnsack

  • 1 January 2026

    Sangamon River Forest Preserve by Bruce M Colravy

    Stream location currently in severe drought area.

  • 1 January 2026

    Sangamon River Forest Preserve site by Bruce M Colravy

    Stream located in severe drought area.

  • 1 January 2026

    River Bend Forest Preserve site by Bruce M Colravy

    The area continues to be impacted by severe drought. This could possibly be contributing to higher than usual chloride values.

  • 31 December 2025

    Westernmost bridge in Dunning Read Natural Area Park by Erika Street Hopman

    Quantab lot A5177A 9.4 Quantab units, off conversion chart so greater than 622ppm Duplicate test strip for QC: 9.6 quantab, but slightly odd shape of results (see picture) Observed 3 plows across the street from the eastern end of the park loaded with salt and ready to go. In addition to the 2 salt storage facilities near the park, the park advisory council recently found an old pile of salt within the park (at 41°57'16.1"N 87°48'08.3"W), about 40 feet from the stream. I've uploaded 3 pictures of the pile: one recent, one Cook county satellite image we pulled from 2022 showing it covered with a tarp, and another one from 2021 with an uncovered pile.

  • 31 December 2025

    River Grove at Grand Ave by Erika Street Hopman

    Quantab lot A5177A 6.0 quantab units, 336 ppm

  • 31 December 2025

    North Branch Nippersink Creek @ W Solon Rd by Cindy Skrukrud

    sediment in water