Dataset

Winter Chloride Watch

Dataset by National Great Rivers

Dataset summary

Observations

  • 21 January 2026

    Creek under Fairmount Ave, east side of bridge by Francis Fraundorf

  • 21 January 2026

    Creek at Merry Meadows by James Weiss

    Value of cl below 29 ppm

  • 21 January 2026

    DuPage River at Riverwalk South Covered Bridge by Shelley Birdsong

    Been some snow in last week or two.

  • 21 January 2026

    DuPage River at South Hammel Woods Kayak Launch by Miranda Gollwitzer

    First picture is of the site and the sample was collected from the rock ledge where the ice has broken. Second picture shows the results of the first test. Second test was performed and the chloride result was 114 ppm as shown in the last picture.

  • 21 January 2026

    Spring Brook in St. James Farm Forest Preserve by Jay Gilbert

  • 21 January 2026

    Lily Cache Creek by John Griffis

    Lily Cache Creek at Van Horn Woods width, downstream, chloride tab, upstream. Frozen solid but was able to break ice at snags. No depth was possible.

  • 21 January 2026

    Plum Creek at Klemme by Jane Schulten

    Mostly ice covered, but was able to sample open flowing water.

  • 21 January 2026

    Boneyard Creek just south of the corner of Springfield Ave and Second St by Wendy Harris

    Water clear with some trash and natural litter. Large litter from last visit still here. Birds in tree were only wildlife seen.

  • 21 January 2026

    Lily Cache Creek by John Griffis

    Lily Cache Creek at 4 Seasons baseball fields west upstream, width, downstream, chloride tab. Frozen solid; difficult to get sample; broke ice along edge and got a little muddy water. No depth measure was possible.

  • 21 January 2026

    Brookbank Rd bridge over St. Joseph creek in Downers Grove. by Steve Ruffolo

  • 20 January 2026

    Villa Ave Bridge at Sugar Creek by Joe Neilly

    Creek was complletely frozen except under bridge. Bridge deck was covered with dried road salt.

  • 20 January 2026

    SCGW bridge on Salt Creek by Joe Neilly

    Ice on one side of creek. Have not seen this in the two years of collecting for Water Rangers

  • 20 January 2026

    Spring Creek- RVC Amphitheater by SRES Student Environmental Organization

  • 20 January 2026

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

  • 19 January 2026

    Copper Slough at Porter Park by Lainey Howard

    Not able to collect sample because of frozen water