The Oswego Diversion Dam is located in the Tualatin River at river mile 3.4. Data are collected on the half hour. Periods with no data are plotted as grey areas. These data are provisional and are subject to revision.

Water Temperature

Graph updated: Monday - Nov 18, 2024 at 13:00:15 EST

graph of water temperature

Specific Conductance

Graph updated: Monday - Nov 18, 2024 at 13:00:09 EST

graph of specific conductance

pH

Graph updated: Monday - Nov 18, 2024 at 13:00:14 EST

graph of pH

Dissolved Oxygen

In the graph below, "Data" are the raw data, "No supersat." are the half-hourly data with a ceiling of 100% saturation, "7-day mean min" represents the 7-day running average of daily minima with no credit for supersaturation, and "30-day mean" is the 30-day running average with no credit for supersaturation. The red line will often plot on top of the black one. If the 7-day or 30-day lines are not plotted, it is due to missing data in that period. "Saturation" represents the 100% saturation value for dissolved oxygen.

Graph updated: Monday - Nov 18, 2024 at 13:00:10 EST

graph of dissolved oxygen

Oxygen Percent Saturation

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 - Nov 18, 2024 at 13:00:11 EST

graph of dissolved oxygen

Turbidity

Turbidity data are measured in FNU units.

Graph updated: Monday - Nov 18, 2024 at 13:00:16 EST

graph of turbidity

Chlorophyll Fluorescence

The chlorophyll fluorescence sensor provides an estimate of the amount of chlorophyll pigment found in algae based on a fluorescence response.

Graph updated: Monday - Nov 18, 2024 at 13:00:12 EST

graph of chlorophyll fluorescence

Phycocyanin Fluorescence

The phycocyanin fluorescence sensor provides an estimate of the amount of phycocyanin pigment found in blue-green algae based on a fluorescence response.

Graph updated: Monday - Nov 18, 2024 at 13:00:13 EST

graph of phycocyanin fluorescence

Air Temperature

Graph updated: Monday - Nov 18, 2024 at 13:00:07 EST

graph of air temperature

Barometric Pressure

Graph updated: Monday - Nov 18, 2024 at 13:00:08 EST

graph of barometric pressure

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U.S. Department of the Interior | U.S. Geological Survey
URL: https://or.water.usgs.gov/tualatin/monitors/oswegodam_all_30.html
Page Contact Information: Stewart Rounds
Page Last Modified: Thursday - May 16, 2024 at 10:48:24 EDT