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Water Quality Annual Data Request-2023

Request for data


The Water Quality Control Division issued a data call for water quality data and information collected within the from January 1, 2018 to December 31, 2022. The data received can be accessed via the link below. This data call concluded on September 1, 2023.

The data received can be accessed via the link below. This data is in a preliminary, unassessed format. This data is made available to provide stakeholders access to the data submitted to the division. A master site list file that includes a list of monitoring locations, their estimated assessment unit IDs, and the type of data collected is available. Each sampling location in the Master Site List references a Waterbody ID and the file name, which contains the water quality data collected at that site.


If you have questions regarding the data, please contact:  cdphe_wqcd_surfacewaterdata@state.co.us


Preliminary results from 2023 data request