Dataset

Winter Chloride Watch

Dataset by National Great Rivers

Dataset summary

Observations

  • 26 January 2026

    Long Run Creek - Homer Glen, IL by Greg Vejvoda

    The air temperature over the preceding week was consistently below freezing. 3.5" to 4" of snow fell over the local area over the 2 days prior to when the water sample was taken.

  • 25 January 2026

    East Branch DuPage River at East Branch Forest Preserve by Ralph Watkins

    Usual test site was completely frozen (was never frozen last winter), however, about 100 yards downstream was some patches of flowing water so I tested there.

  • 25 January 2026

    North Aurora Riverfront Park by Kathleen Klehr

    not able to access main river flow due to ice. water sample collected from nearby channel

  • 24 January 2026

    Herrick Lake by Ken List

    Unable to take a water sample in January 2026 due to solid ice coverage over the water.

  • 24 January 2026

    Blackwell Forest Preserve Silver Lake by Ken List

    Unable to take a water sample in January 2026 due to solid ice coverage over the water.

  • 22 January 2026

    Nippersink Creek at the Keystone Landing in McHenry County Conservation District's Glacial Park Conservation Area by Sue Rose

  • 22 January 2026

    Brainard's Branch, Grand Ave bridge between 19th and 20th Sts by Pamela Moriearty

    No significant snow events in Brainard's Branch drainage area in January, 2026 to date. Ice on at Brainard's Branch collection point with no accessible open water available. Snow event with 3-6 inch accumulation predicted for January 24-25, but predicted high temperatures average -20 deg C for the rest of the month. No sample taken in January.

  • 22 January 2026

    Kickapoo Creek Park, 2000 N. Jefferson St., Lincoln, IL pedestrian bridge on park road by Pamela Moriearty

    No significant snow events in Kickapoo Creek drainage area in January 2026 to date. Ice on at Kickapoo Creek Park collection point with no accessible open water available. Snow event with 3-6 inch accumulation predicted for January 24-25, but predicted high temperatures average -20 deg C for the rest of the month. No sample taken in January.

  • 21 January 2026

    West bridge, Winfield Creek, Northside Park by Kate Fleming

  • 21 January 2026

    DuPage River at Riverwalk South Covered Bridge by Shelley Birdsong