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Water Quality Samples for Wyoming

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Questions or concerns about USGS data and data products in Wyoming and Montana 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 Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024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 06642000 NORTH PLATTE RIVER AT ALCOVA, WY

Natrona County, Wyoming
Hydrologic Unit Code 10180007
Latitude  42°34'27", Longitude 106°41'31" NAD27
Drainage area 10,812  square miles
Contributing drainage area 10,112  square miles
Gage datum 5,299.4 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 1965-10-01 2024-01-30 372 12587
Information 1976-01-19 2024-01-30 162 411
Physical 1965-10-01 2024-01-30 354 3828
Inorganics, Major, Metals 1965-10-01 2016-06-08 288 1730
Inorganics, Major, Non-metals 1965-10-01 2024-01-30 343 2759
Nutrient 1965-10-01 2023-10-26 309 1924
Microbiological 1973-11-06 2016-06-08 167 223
Biological 1976-01-19 1981-08-11 14 20
Inorganics, Minor, Metals 1966-07-14 2016-06-08 102 1029
Inorganics, Minor, Non-metals 1965-10-01 2016-06-08 181 322
Organics, pesticide 1983-09-07 1986-08-05 2 22
Organics, other 1965-10-01 1981-08-11 40 47
Radiochemical 1980-10-07 2016-06-08 20 24
Sediment 1976-01-19 1988-08-04 47 125
Population/Community 1976-01-19 1981-08-11 13 123