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Water Quality Samples for Oregon

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The Oregon Water Science Center has transitioned to a new data management software package. While you may not have noticed this transition, some sites may have problems or delays in being updated. We are actively monitoring these conditions and are resolving them as quickly as possible. See the Dec 8 news entry for more information at: https://help.waterdata.usgs.gov/news



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 2017-04-05 698 78718
Information 1974-10-25 2017-04-05 630 6581
Physical 1974-10-25 2017-04-05 624 8056
Inorganics, Major, Metals 1974-10-25 2016-12-21 347 2057
Inorganics, Major, Non-metals 1974-10-25 2017-04-05 623 6018
Nutrient 1974-10-25 2017-03-21 521 7602
Microbiological 1974-10-25 1995-06-21 169 392
Biological 1974-10-25 2017-04-05 233 357
Inorganics, Minor, Metals 1974-10-25 2016-12-21 272 4714
Inorganics, Minor, Non-metals 1974-10-25 2016-12-21 248 956
Organics, pesticide 1983-07-01 2017-03-07 364 38273
Organics, PCBs 1992-09-09 1997-08-28 11 11
Organics, other 1974-10-25 2017-04-05 369 1166
Radiochemical 1974-12-31 2005-04-14 117 539
Sediment 1974-10-25 2016-12-21 510 1163
Population/Community 1974-10-25 1981-09-23 57 833