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Water Quality Samples for Oregon


USGS 14211720 WILLAMETTE RIVER AT PORTLAND, OR

Multnomah County, Oregon
Hydrologic Unit Code 17090012
Latitude  45°31'03", Longitude 122°40'09" NAD83
Drainage area 11,200  square miles
Gage datum 1.55 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 1974-10-25 2021-08-26 878 101502
Information 1974-10-25 2021-08-26 810 9534
Physical 1974-10-25 2021-08-26 701 11065
Inorganics, Major, Metals 1974-10-25 2021-06-07 425 2525
Inorganics, Major, Non-metals 1974-10-25 2021-08-26 700 7088
Nutrient 1974-10-25 2021-08-26 599 9100
Microbiological 1974-10-25 2019-10-08 187 462
Biological 1974-10-25 2021-04-14 203 350
Inorganics, Minor, Metals 1974-10-25 2021-06-07 350 5338
Inorganics, Minor, Non-metals 1974-10-25 2021-06-07 326 1190
Organics, pesticide 1983-07-01 2020-09-28 425 50791
Organics, PCBs 1992-09-09 1997-08-28 11 11
Organics, other 1974-10-25 2021-05-24 383 1211
Radiochemical 1974-12-31 2005-04-14 117 539
Sediment 1974-10-25 2021-01-05 581 1465
Population/Community 1974-10-25 1981-09-23 57 833