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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 August 8, 2019: USGS streamflow monitoring will be discontinued at the following site effective October 1, 2019:
  • 09219200 Blacks Fork above Smiths Fork, near Lyman, WY (2018 to present)
USGS monitoring activities at this site are funded by a partner agency. Lack of partner funding for this site will result in discontinuation of all monitoring activities. Questions or concerns can be directed to Kirk Miller (kmiller@usgs.gov; 307-775-9168).


  Stream Site

Latitude 44°50'19",   Longitude 108°26'04"   NAD27
Big Horn County, Wyoming, Hydrologic Unit 10080014
Drainage area: 2,350 square miles
Datum of gage: 3,850 feet above   NGVD29.
Data Type Begin Date End Date Count
 Current / Historical Observations     (availability statement)    1991-10-01  2019-09-21  
 Daily Data
    Discharge, cubic feet per second  1966-10-01  2019-09-20  19326 
 Daily Statistics 
    Discharge, cubic feet per second  1966-10-01  2018-11-27 19051 
 Monthly Statistics 
    Discharge, cubic feet per second  1966-10  2018-11  
 Annual Statistics 
    Discharge, cubic feet per second  1967  2019  
 Peak streamflow 1967-07-01  2017-07-02  51 
 Field measurements 1967-06-30  2019-08-21  341 
 Field/Lab water-quality samples 1966-10-01  2018-06-27  588 
 Water-Year Summary 2006  2018  13 
 Revisions  Loading...
Record for this site is maintained by the USGS Wyoming Water Science Center
Email questions about this site to Wyoming Water Science Center Water-Data Inquiries