Dataset

Winter Chloride Watch

Dataset by National Great Rivers

Dataset summary

Observations

  • 9 December 2025

    Mitchell Lake by Jill Mattox

    The sample was an 8 quantum tab. The chart only goes to 7.6.

  • 9 December 2025

    Timber Ridge Forest Preserve by Andy Culbertson

    The trail took some effort to walk with the accumulation of a few inches of snow over the preceding weeks. Photos: (1) The snow-covered trail and bridge. (2) Wide-angle view of the creek facing north from the bridge. (3) Top-down view from the north side of the bridge: the creek with my sample bucket just above it. (4) Test strip reading.

  • 9 December 2025

    Springbrook Water Reclamation Center Upstream by Amy Wrigley

  • 9 December 2025

    Ferson Creek at Randall Road bike trail bridge by Lisa O'Brien

    Several snow events in last month, have had over 15 inches of snow and bitter cold weather. Early based on recent winters.

  • 9 December 2025

    Creek Bend Pond by Lisa O'Brien

    Snow and freezing temps arrived early this year. Already have about 15 inches of snow. Probably about 5 snow events with salt/shoveling.

  • 9 December 2025

    Boneyard Creek just south of the corner of Springfield Ave and Second St by Wendy Harris

    Large snow event Nov 29 with cold temps and no major melt events since.

  • 9 December 2025

    Lisle Community Park Boat Launch near Short St on East Branch DuPage River by Christie McGuinn

  • 8 December 2025

    Turnmill Pond - Smythe Settlement by Steve Slivka

    Snow accumulation of 4 inches during the previous 36-48 hours.

  • 8 December 2025

    Ewing Park II Sugar Creek Monitoring Site by Katie Vogler

    tested on concrete test showed 8.4 which is above measurable amount concentration much higher than 641

  • 8 December 2025

    Army Trail West Pond - Smythe Settlement by Steve Slivka

    Snow accumulation of 4 inches during the previous 36-48 hours.

  • 8 December 2025

    Bloomington Normal Water Reclamation District (BNWRD) Sugar Creek Monitoring Site by Katie Vogler

    Ice-on, ppm is above 641 since chloride strip tested for 8.1

  • 8 December 2025

    Fairview Park Sugar Creek Stewards Monitoring Site by Katie Vogler

    chloride testing was above 641 since strip showed 8.1

  • 8 December 2025

    Trinity South Pond - Smythe Settlement by Steve Slivka

    Snow accumulation of 4 inches during the previous 36-48 hours.

  • 8 December 2025

    Bradford Lane Retention Basin #1 by Katie Vogler

    tested retention pond, not discharge

  • 8 December 2025

    Bradford Lane Retention Basin #2 by Katie Vogler

    Tested for 9.6 so ppm is above 641 Tested flow (discharge)

  • 8 December 2025

    Herrick Lake by Ken List

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