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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 Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024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 12301933 Kootenai River bl Libby Dam nr Libby MT

Lincoln County, Montana
Hydrologic Unit Code 17010101
Latitude  48°24'02.39", Longitude 115°19'07.39" NAD83
Drainage area 8,999  square miles
Gage datum 2,100 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 1964-05-15 2024-03-05 1383 40857
Information 1967-11-27 2024-03-05 1077 4172
Physical 1964-05-15 2024-03-05 1335 12400
Inorganics, Major, Metals 1964-05-15 2023-10-31 348 2093
Inorganics, Major, Non-metals 1964-05-15 2024-03-05 1242 6671
Nutrient 1964-05-15 2023-07-26 669 7029
Microbiological 1973-08-10 1973-08-10 1 2
Biological 1974-06-10 2024-01-23 232 460
Inorganics, Minor, Metals 1967-07-26 2023-10-31 335 5751
Inorganics, Minor, Non-metals 1967-06-29 2023-10-31 979 1456
Organics, other 1970-10-22 2024-01-23 510 657
Radiochemical 1980-10-07 2023-09-27 14 15
Sediment 1968-05-27 2004-09-23 37 151