Willamette River At Portland, Or Realtime Data
WILLAMETTE RIVER AT PORTLAND, OR
Realtime Data • Report • Conditions
20,600
Discharge (cfs)
1.7
Gauge Height (ft)
Streamflow discharge was last observed at 20,600 cfs, and a gauge height of 1.74 feet.
With the
% decrease since yesterday,
the streamflow average over the past 10 days is 16,324 .
Weather today, Tomorrow,
The main constituents of the river are water and sediment, with occasional pollutants from industrial and agricultural activities. The river is fed by several tributaries, including the Clackamas and Tualatin Rivers. The presence of dams, such as the Bonneville Dam, can affect the flow rate and water temperature. Seasonal trends show higher flows during the winter and lower flows during the summer months. Interestingly, the Willamette River is home to several species of fish, including salmon and steelhead, and is a popular spot for recreational activities such as kayaking and swimming.
September 12, 2026
| Elevation | 10.0 ft |
| Last Updated | |
| Mean water velocity for discharge computation, feet per second | 0.59 ft/sec |
| Colored dissolved organic matter (CDOM), water, in situ, single band excitation, fluorescence emission, ppb QSE | 14.52 ug/l QSE |
| Gage height, ft | 1.74 ft |
| Chlorophyll a, estimated, water, in-situ, in-vivo fluorescence (IVF), relative fluorescence units (RFU) | 0.4 RFU |
| Streamflow, ft³/s | 20600.0 ft3/s |
| Phycocyanins (cyanobacteria), water, in situ, IVF, IVFU | 0.13 IVFU |
| Depth of sensor below water surface, feet | 4.76 ft |
| Specific conductance, water, unfiltered, microsiemens per centimeter at 25°C | 98.0 uS/cm @25C |
| Dissolved oxygen, water, unfiltered, mg/L | 9.4 mg/l |
| Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 ±2.5°, formazin nephelometric units (FNU) | 1.1 FNU |
| pH, water, unfiltered, field, standard units | 7.4 std units |
| Streamflow, tidally filtered, ft³/s | 6320.0 ft3/s |
| Temperature, water, °C | 18.4 deg C |
| Chlorophylls, water, fluorometric, 650-700 nm, in situ sensor, micrograms per liter | 1.7 ug/l |
| Phycocyanins (cyanobacteria), water, in situ, fluorometric method, excitation at 590 ±15 nm, emission at 685 ±20 nm, relative fluorescence units (RFU) | 0.13 RFU |
| Lower 90 percent prediction limit for SSC by regression (PCODE 99409), milligrams per liter | 1.7 mg/l |
| Upper 90 percent prediction limit for SSC by regression (PCODE 99409), milligrams per liter | 4.7 mg/l |
| Nitrate, water, in situ, mg/L as N | 0.13 mg/l as N |
| Suspended sediment concentration, water, unfiltered, estimated by regression equation, mg/L | 2.8 mg/l |
| Suspended sediment load, water, unfiltered, computed, the product of regression-computed suspended sediment concentration and streamflow, tons per day | 143.0 tons/day |
| Percent of Normal | 127% |
| Year Over Year Average | 16,100 cfs |
| 24hr Flow Prediction | cfs |
| Maximum Recorded | 167,000 cfs |
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