Request for data
The Water Quality Control Division issued a data call for water quality data and
information collected within the Upper and Lower Colorado River basins (Regulations
#33 and #37) from January 1, 2017, to December 31, 2021. This data call concluded
on September 1, 2021.
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 references 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