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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 Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024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 12323700 Mill Creek at Opportunity, MT

Deer Lodge County, Montana
Hydrologic Unit Code 17010201
Latitude  46°06'51.76", Longitude 112°49'11.19" NAD83
Drainage area 42.5  square miles
Gage datum 04,940 feet above NAVD88
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 2003-03-17 2023-11-01 344 9566
Information 2003-03-17 2023-11-01 254 1722
Physical 2003-03-17 2023-11-01 343 3384
Inorganics, Major, Metals 2003-03-17 2023-11-01 171 698
Inorganics, Major, Non-metals 2003-03-17 2023-11-01 227 768
Nutrient 2009-08-18 2009-08-18 1 9
Inorganics, Minor, Metals 2003-03-17 2023-11-01 171 2051
Inorganics, Minor, Non-metals 2003-03-17 2023-11-01 227 398
Organics, other 2013-04-08 2023-11-01 87 87
Sediment 2003-03-17 2023-11-01 169 449