7-Days of Nitrate at the Willamette River at Portland, OR (14211720)
Data are downloaded and processed every 3 hours.
The Willamette River at Portland site is located at the Morrison Bridge in downtown Portland, OR. Data are collected every half hour. Periods with no data are plotted are plotted as grey areas.
These data are provisional and are subject to revision.
Graph updated: Sunday - Sep 15, 2019 at 02:00:31 EDT