Dataset

Winter Chloride Watch

Dataset by National Great Rivers

Dataset summary

Observations

  • 16 February 2026

    Terrace View Park by JOE LECROY

    Pond is near a school and residential. Ice still on most of the pond. Beautiful unseasonably warm day out - sunny about 59 degrees.

  • 16 February 2026

    Newman Creek @ N Queen Anne Rd by Cindy Skrukrud

    sampled at the downstream side.

  • 16 February 2026

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

    Low temperatures and snow event in early February which persisted until 2/10 when higher temperatures led to start of ice melt on larger Kickapoo Creek. Surface of Brainards Branch was still ice-covered on 2/14/26 under and near the overpass where samples were taken. Small areas (approx 15 cm diameter) of open water seen upstream and downstream. Area large enough to collect sample was present by 2/16.

  • 16 February 2026

    Lippold Park - West Entrance by Far Syed

    The weather was really nice, and glad the ice did not take over the part that I was sampling! Due to the rain and snow, the chloride seems to have increased, so let’s see what happens next month.

  • 16 February 2026

    Timber Trails Park pond by Michelle Besch

    Took two samples for quality control. Same reading. Ice on but melt in spots.

  • 16 February 2026

    Blackwell Forest Preserve Silver Lake by Ken List

    Unable to collect a water sample due to complete ice coverage.

  • 16 February 2026

    Herrick Lake by Ken List

    Unable to collect a water sample due to complete ice coverage.

  • 16 February 2026

    Nippersink Creek @ Rte 12 (west of State Park Rd intersection) by Cindy Skrukrud

    Frozen- not able to sample

  • 16 February 2026

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

    Ice on edge of river

  • 16 February 2026

    West Branch Dupage River by Gerry Gorman

    Nice day, ice on edges of river

  • 16 February 2026

    North Branch Nippersink Creek @ W Solon Rd by Cindy Skrukrud

    Site frozen- no sample taken

  • 16 February 2026

    Legion Park-NSCP by Meggan Kehrli

    Between this observation and the previous (January 2026) Chicago has had several snow events and a few days of icy sidewalk/road conditions. This past week has experienced a warm up, temps in the 40-50+F (4C-10C).