30-Days of Data 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 as grey areas. These data are provisional and are subject to revision.

Discharge

Values less than 20,000 ft³/s are estimates only.

Graph updated: Monday, 27-Oct-2025 19:59:21 EDT

Stream Velocity

Values near zero are estimates only.

Graph updated: Monday, 27-Oct-2025 19:59:28 EDT

Gage Height

Graph updated: Monday, 27-Oct-2025 19:59:19 EDT

Water Temperature

Graph updated: Monday - Oct 27, 2025 at 19:59:25 EDT

Specific Conductance

Graph updated: Monday - Oct 27, 2025 at 19:59:15 EDT

pH

Graph updated: Monday - Oct 27, 2025 at 19:59:22 EDT

Dissolved Oxygen

Data in the graph are plotted against the axis of the same color. Percent saturation is estimated as a function of water temperature and barometric pressure at this site.

Graph updated: Monday - Oct 27, 2025 at 19:59:16 EDT

Turbidity

Turbidity data are measured in FNU units.

Graph updated: Monday - Oct 27, 2025 at 19:59:26 EDT

Estimated Secchi Depth

Secchi depth data are estimated based on turbidity data and are measured in feet.

Graph updated: Monday - Oct 27, 2025 at 19:59:24 EDT

Chlorophyll Fluorescence (RFU)

Graph updated: Monday - Oct 27, 2025 at 19:59:17 EDT

Phycocyanin Fluorescence (RFU)

Graph updated: Monday - Oct 27, 2025 at 19:59:18 EDT

FDOM (ppb QSE)

Graph updated: Monday - Oct 27, 2025 at 19:59:27 EDT

Nitrate (mg/L)

Graph updated: Monday - Oct 27, 2025 at 19:59:22 EDT