Recent observations
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Dataset: Winter Chloride Watch
Springbrook Water Reclamation Center Upstream - DuPage River
111 datapoints on 18 dates (November 15 2023 → February 13 2026)
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Dataset: Winter Chloride Watch
Fabyan Forest Preserve - Fox River
220 datapoints on 39 dates (January 13 2022 → February 13 2026)
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Dataset: Winter Chloride Watch
River Park Boathouse - Chicago River
305 datapoints on 44 dates (January 02 2023 → February 13 2026)
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Dataset: Winter Chloride Watch
Sangamon River Forest Preserve - Wildcat Slough
274 datapoints on 31 dates (November 06 2022 → February 13 2026)
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Dataset: Winter Chloride Watch
Sangamon River Forest Preserve site - Sangamon River
460 datapoints on 47 dates (November 07 2021 → February 13 2026)
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Dataset: Winter Chloride Watch
Fox River - Fox River
96 datapoints on 16 dates (January 08 2024 → February 13 2026)