Dataset

Winter Chloride Watch

Dataset by National Great Rivers

Dataset summary

Observations

  • 21 December 2025

    Island Park by Melissa Ruebenson

    Nice day for collection, the river seemed about average level and calm waters. I conducted two tests on the sample this month, both test results were 5 ppm. Picture of both test strips attached.

  • 21 December 2025

    Timber Trails Park pond by Michelle Besch

    Frozen solid. Unable to get a sample.

  • 21 December 2025

    Harms Woods/Glenview Woods by Mac Austin

    Snow almost all melted. A week or so ago (12/15/25) there was about a foot of snow on the ground after two major storms came through.

  • 20 December 2025

    Lake Katherine Nature Center & Botanic Garden by Michael Bielski

  • 20 December 2025

    Snyder's Grove by Amy Brewer

    December had 18 inches of snow, lots of ice and a rainy day recently. It is hard to see the reading on the strip because the number 4 blocks the white part. I looked on the back though, and could see it was past the darker line indicated 4. photo above

  • 20 December 2025

    Lake Kakusha by Amy Brewer

    December had 18 inches of snow, lots of ice and a day of rain. Lots of salt was used on the roads this month.

  • 20 December 2025

    Apple Orchard Park - Mendota Creek by Amy Brewer

    December had 18 inches of snow, lots of ice and a recent day of rain. Lots of salt was used on roads this month.

  • 20 December 2025

    Dayton Bluffs forest preserve by Edward Pfaff

    collected sample in open water with a throw cup.

  • 20 December 2025

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

    currently warming temperatures (> 0 deg C) after weeklong cold period (< -12 deg C, with snow accumulation 6-8 in). no surface ice

  • 20 December 2025

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

    currently warming temperatures (> 0 deg C) after weeklong cold period (< -12 deg C, with snow accumulation 6-8 in). Small open areas in ice cover

  • 20 December 2025

    Bridge over river on Gartner Road near Edgewater Drive by Gerry Gorman

    Snow melting and lots of salt on roads

  • 20 December 2025

    Main Street by JoAnn Schindler

    There is ice on the river and ice at the edges of Crystal Creek, but the water is running free at the dam and under our bridge for sampling crystal Creek