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Water Quality Samples for Minnesota

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NOTE: During winter months, stage and discharge may be significantly affected by backwater from ice, resulting in incorrect discharge data. Consequently, discharge data may not be displayed during periods of ice effect. Click here for more information.



! Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting in February 2024
with a full decommission expected 6 months later. Learn more about the upcoming change and where to find the new samples data in our blog.
Some complex retrievals may take a few minutes.
Choose Site Selection Criteria
There are 7,163 sites with water-quality data. Choose at least one of the following criteria to constrain the number of sites selected.

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* Selection of more than one data attribute will include all samples that meet all conditions selected.