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Water Quality Samples for Montana

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


! Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024
with a full decommission expected 6 months later. Learn more about the upcoming change and where to find the new samples data in our blog.

USGS 06307500 Tongue River at Tongue R Dam nr Decker MT

Big Horn County, Montana
Hydrologic Unit Code 10090101
Latitude  45°08'28.59", Longitude 106°46'16.88" NAD83
Drainage area 1,783  square miles
Gage datum 3,344.4 feet above NGVD29
Output formats
Parameter Group Period of Record table
Inventory of available water-quality data for printing
Inventory of water-quality data with retrieval
Tab-separated data, one result per row
Tab-separated data one sample per row with remark codes combined with values
Tab-separated data one sample per row with tab-delimiter for remark codes
Reselect output format
Parameter Group Summary of Available Data
Parameter Group First
Date
Last
Date
Number of
Samples
Number of
Values
All -- include all parameter groups 1975-10-07 2020-09-09 450 19337
Information 1976-10-13 2020-09-09 403 1282
Physical 1975-10-07 2020-09-09 449 6118
Inorganics, Major, Metals 1975-10-07 2020-09-09 353 2121
Inorganics, Major, Non-metals 1975-10-07 2020-09-09 353 3282
Nutrient 1975-10-07 2020-08-19 244 2434
Inorganics, Minor, Metals 1975-10-07 2020-08-19 243 2324
Inorganics, Minor, Non-metals 1975-10-07 2020-08-19 242 615
Organics, other 1977-11-02 1995-07-25 71 140
Radiochemical 1980-10-29 1981-07-15 8 8
Sediment 1975-10-07 2020-09-09 342 1013