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Parameter Code Definition

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Questions or concerns about USGS data and data products in Wyoming and Montana can be directed to the Wyoming-Montana Water Science Center Data Management Section.

UPDATED October 1, 2020: USGS current stream monitoring information will continue at the following sites with funding from partner agencies and USGS Cooperative Matching Funds: USGS monitoring activities at these sites had been supported through June 30, 2020 with funding from our partner agency and USGS cooperative matching funds. Without funding from another partner, current water-resources information from these sites will no longer be available from the USGS. Historical data will continue to be available from USGS.

Retrieve definitions of parameter codes and parameter groupings.
Search Criteria
  -- List all parameters in a group
  Parameter code/name -- Enter a code or name (matches any part)
 CASRN -- For best result, enter full CASRN with dashes. For example, "7439-97-6" (CAS Registry NumberŪ is a Registered Trademark of the American Chemical Society. CAS recommends the verification of the CASRNs through CAS Client ServicesSM.)
 USEPA SRS -- Matches any part. For example, "phosphorus" retrieves SRS names "Phosphorus", " Organic phosphorus" and " Phosphate-phosphorus". (Definition)

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