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USGS Water Data for Wyoming

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Questions or concerns about USGS streamflow data in Wyoming and Montana can be directed to Kirk Miller (kmiller@usgs.gov; 307-775-9168).

UPDATED July 27, 2020: USGS current stream monitoring information will continue at the following sites with funding from partner agencies and USGS Cooperative Matching Funds:
  • 06298000 Tongue River near Dayton, WY - Funded through Sep 30, 2021
  • 06311000 North Fork Powder River near Hazelton, WY - Funded through Sep 30, 2020 only
  • 06324970 Little Powder River above Dry Creek near Weston, WY - Funded through Sep 30, 2021
  • 06429905 Sand Creek near Ranch A near Beulah, WY - Funded through Sep 30, 2020 only
  • 09205000 New Fork River near Big Piney, WY - Funded through Sep 30, 2020 only
  • 13016450 Fish Creek at Wilson, WY - Partner: Teton Conservation District
UPDATED July 12, 2020: USGS current streamflow monitoring information will be discontinued at the following sites effective August 1, 2020:
  • 06289600 West Pass Creek near Parkman, WY (37 yrs)
  • 06289820 East Pass Creek near Dayton, WY (37 yrs)
  • 06297500 Highline Ditch near Dayton, WY
  • 06311400 North Fork Powder River below Pass Creek near Mayoworth, WY (46 yrs)
  • 06392900 Beaver Creek at Mallo Camp near Four Corners, WY (37 yrs)
  • 06392950 Stockade Beaver Creek near Newcastle, WY (37 yrs)
  • 06429500 Cold Springs Creek at Buckhorn, WY (37 yrs)
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. Questions or concerns can be directed to Kirk Miller (kmiller@usgs.gov; 307-775-9168).

Current and Historical Instantaneous Data Availability

The available parameters from the Current Conditions and Historical Observations pages on the National Water Information System Web Interface have two categories of instantaneous data availability. For some parameters, historical data are available as far back as October 1, 1950, whereas for others only the most recent 120 days of provisional data are available. The period of availability depends on the intended use of the data and can vary from site to site and/or between parameters at a site as described below.

Available Historical Instantaneous Data:

Parameters with historical instantaneous data are measured by the USGS Water Science Center (WSC) with the intent to publish and are subject to a thorough review and approval process. Typically, these data have corresponding historical daily values available for the period of record. These instantaneous data are limited to data collected since October 1, 1950.

Data are presented as approved or PROVISIONAL as appropriate, however provisional data will be provided for only the most recent three years. In cases where data are not approved within a three year period, interested users should contact the local WSC for further information.

Available Operational Instantaneous Data:

These parameters typically are collected by the USGS for the purposes of supporting short-term operational needs of the data network (for example precipitation at some locations) or parameters measured to facilitate the computation of another parameter of interest (for example, stage is used in the computations of streamflow). In either case, these parameters are not necessarily corrected for errors or omissions either because the short-term need for the operational data has passed or because other methods were used to estimate the primary parameter of interest. Operational instantaneous data typically are not intended for publication and therefore are limited to the most recent 120 days.

Please note that the above designations are not uniformly applied from site to site for a given parameter. For example, whereas stage data at some sites are fully quality assured, published, and are historically available, at other sites they are not quality assured and will only be available for 120 days. The same site-to-site variations will exist for precipitation and other parameters depending on the intended uses of the data.

Significant gaps in the availability of historical instantaneous data may exist due to instrument problems, environmental conditions or other factors that affect the ability to collect data. For some parameters, especially streamflow and others that are routinely estimated as necessary, a complete record may be available as Daily Data.