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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 Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024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 06329500 Yellowstone River near Sidney MT

Richland County, Montana
Hydrologic Unit Code 10100004
Latitude  47°40'38.69", Longitude 104°09'19.48" NAD83
Drainage area 69,099  square miles
Contributing drainage area 68,407  square miles
Gage datum 1,881.30 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 1959-10-01 2024-01-17 1702 93168
Information 1967-11-01 2024-01-17 1096 10251
Physical 1959-10-01 2024-01-17 1602 14977
Inorganics, Major, Metals 1959-10-01 2023-10-31 723 3599
Inorganics, Major, Non-metals 1959-10-01 2024-01-17 913 8208
Nutrient 1959-12-21 2023-10-31 686 8392
Microbiological 1970-07-07 2001-09-26 277 707
Biological 1974-10-08 2005-09-07 69 111
Inorganics, Minor, Metals 1959-12-21 2023-10-31 435 4470
Inorganics, Minor, Non-metals 1959-12-21 2023-10-31 421 1217
Organics, pesticide 1972-01-18 2023-10-31 314 35401
Organics, PCBs 1972-01-18 1982-06-29 26 54
Organics, other 1966-01-01 2023-10-31 419 808
Radiochemical 1980-10-29 2001-09-26 73 109
Sediment 1965-06-18 2023-08-30 1063 4168
Population/Community 1974-10-08 1981-09-24 61 696