Dataset

Winter Chloride Watch

Dataset by National Great Rivers

Dataset summary

Observations

  • 17 November 2025

    Prentiss Creek at Prentiss Street by Gloria Walsh-Rock

    First time - I hope everything looks correct.

  • 16 November 2025

    Prentiss Creek in Downers Grove (1911 Prentiss St.) by Patricia Weikersheimer

  • 16 November 2025

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

  • 15 November 2025

    Lake Katherine Nature Center & Botanic Garden by Michael Bielski

  • 15 November 2025

    Woodscreek Park: 3 Pipe Inlet, Ackman Rd and Golf Course Rd, Crystal Lake, Il by Songjie Su

    Warm last 2 days, 1 week after this season’s first snow with some accumulation.

  • 15 November 2025

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

    water clear but brown, with floating leaves and debris; little flow

  • 15 November 2025

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

    1.water low, with floating debris, leaves, slow flow 2. chloride strips with duplicate of Brainard Branch strip.

  • 15 November 2025

    Salt Creek (26th Street Woods) by Robert Wagner

    Water was clear and flowing at a steady, moderate pace.

  • 15 November 2025

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

    Freezing temperatures last Sunday and Monday. Lake (Michigan) effect snow in the area. Trucks were on the main roads spreading salt.

  • 15 November 2025

    Forest Preserves of Cook County - Kickapoo Woods by David Schmid

    Freezing temperatures on Sunday and Monday of this week. This area was affected by lake (Michigan) effect snow. Trucks spread salt on major roads.

  • 14 November 2025

    Brookbank Rd bridge over St. Joseph creek in Downers Grove. by Steve Ruffolo