Dataset

Winter Chloride Watch

Dataset by National Great Rivers

Dataset summary

Observations

  • 28 February 2026

    Salt Creek Greenway Trail (just south of North Avenue) by Robert Wagner

    Creek was relatively clear with a steady flow. Sample taken at shore. Depth of water (8").

  • 27 February 2026

    Forest Preserves of Cook County - Burnham, Illinois by David Schmid

  • 27 February 2026

    Sandy Creek in Elgin Township Wetland preserve by Holly Hudson

    Above average daytime temperatures over the past 3 weeks, below average precipitation (minimal precipitation) for February. Low flow today, a little ice on stream edges and within submerged overhanging branches.

  • 27 February 2026

    Forest Preserves of Cook County - Kickapoo Woods by David Schmid

  • 27 February 2026

    Frank Holten State Park by Jen Hemphill

    Windy day, but warm for February. Lots of birds around the lake. Slight chop on the water.

  • 27 February 2026

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

  • 27 February 2026

    Lily Cache Creek by John Griffis

    Lily Cache Creek at Van Horn Woods: downstream, upstream, 2 chloride tab readings from 2 separate samples at the same site, width. Depth mid-stream.

  • 27 February 2026

    West Branch Du Page River by Lawrence Hjorth

    1. A picture of the south view of the Ogden Bridge. 2. A picture from the top of the bridge where the sample was taken. 3. A picture of the bucket of water in which the sample is taken. 4. The results of the water sample.