Dataset

Winter Chloride Watch

Dataset by National Great Rivers

Dataset summary

Observations

  • 12 November 2025

    Morgan Creek at Morgan Creek Park by Alyssa Theodor

    Brush has been cleared on the north side of the creek this fall and was cleared on the south side this past spring

  • 12 November 2025

    Big Hollow Creek in Iris Park by Robert Rowe

    tested for phosphorus: results 0

  • 11 November 2025

    Rock Run Creek by Andy Neill

    The landscape photos are taken from a similar location looking south and north of sample site located under the footbridge.

  • 10 November 2025

    Oakhurst Forest Preserve South Shore Dock by DL Dosado

    Second QC Test Strip Included: Identical Results

  • 10 November 2025

    North Branch Chicago River at Edgebrook Woods by Alan Matson

    First snow of the season this morning. 5 inches. Sample should be before too much road salt got in the river but higher than I expected.

  • 9 November 2025

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

  • 8 November 2025

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

    Conducted two tests using the same sample (see pictures above). Test 2 was conducted 4 minutes after the initial and resulted in the same PPM = 164.

  • 8 November 2025

    Winfield Creek at Emerson School by Maureen Keil

    This first test of the season we were asked to test twice to make sure that the quantabs were standardized. I had two different results for Chloride (137 ppm and 150 ppm). I asked our coordinator if I needed to get new test tabs and she said to just report both of them, and continue to use the test strips I'd been given.

  • 8 November 2025

    Lippold Park - West Entrance by Far Syed

    It was raining, while I was sampling, and it seems like the chloride levels were higher, compared to the other site I went to. It was getting chilly, rainy, and cold, so not sure how often the site was checked, to ensure the chloride levels were reduced!

  • 8 November 2025

    Creek under Fairmount Ave, east side of bridge by Tom Prince