Dataset

Winter Chloride Watch

Dataset by National Great Rivers

Dataset summary

Observations

  • 7 November 2025

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

    Light rain during the past 12 hours but river has been low. 1st observation of the season.

  • 7 November 2025

    Fox River by Nick Longo

    Water is very stagnate at this location.

  • 7 November 2025

    West Branch Dupage River by Gerry Gorman

    1st observation of season. River is low although we had rain earlier this morning.

  • 6 November 2025

    Nippersink Creek at the Keystone Landing in McHenry County Conservation District's Glacial Park Conservation Area by Sue Rose

    Prescribed burn in the area causing smokey conditions.

  • 6 November 2025

    South Branch Kishwaukee River at College Ave. by WILLIAM MARTIN

    Time on post-it is off by 1 hour. Samples taken locally at 1:30pm Central. Water level in S. Branch of Kishwaukee River as measured at College Avenue Bridge is very low.

  • 6 November 2025

    Watson Creek - Inflow to East Lagoon at Montgomery to Faraday pedestrian bridge by WILLIAM MARTIN

    Time recorded on post-it is off by 1 hour. Samples taken at 1:30pm Central.

  • 6 November 2025

    Hickory Creek River at Highland Park Drive by Kathy Janik

  • 6 November 2025

    Salt Creek S Elmhurst canoe launch by Andrea Studzinski

    First test of the year - before any snow and salt on the roads. This was my duplicate test result - got the same result for both tests.

  • 6 November 2025

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

    Had to change access locations - current location was too inaccessible, especially in winter. New site is just upstream at this location (41.9316410, -88.3443448). Creek will still be tested down stream of other site, yet up stream of Randall Rd bridge. We may experience less contamination, but safer access point.

  • 5 November 2025

    Bradford Lane Retention Basin #1 by Katie Vogler

    Outlet dry, no water flow. Had to test water directly from basin.

  • 5 November 2025

    Ewing Park II Sugar Creek Monitoring Site by Katie Vogler

  • 5 November 2025

    Fairview Park Sugar Creek Stewards Monitoring Site by Katie Vogler

  • 5 November 2025

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

    Stagnant water, not flowing downstream. Leaves scattered throughout the drain, possibly contributing to high chloride amount (9.2 on Quantab, higher than 619)

  • 5 November 2025

    Bradford Lane Retention Basin #2 by Katie Vogler

    Leaves in the outlet, possibly contributing to high chloride count. (8.0 on Quantab)

  • 4 November 2025

    Springbrook Water Reclamation Center Upstream by Amy Wrigley

    Includes duplicate- same result as first test- 150 ppm

  • 4 November 2025

    Glencrest creek south of Bemis Road by Lance Lambert

    Duplicate test was 73ppm