30-Days of Data for the Tualatin River at Dilley (14203500)

Data are downloaded and processed every 2 hours.

The Tualatin River at Dilley site is located at river mile 58.8 at Springhill Road. Data are collected every 15 minutes. Periods with no data are plotted as grey areas. These data are provisional and are subject to revision.

Streamflow

Graph updated: Monday - Nov 18, 2024 at 12:59:43 EST

Gage Height

To obtain water-surface elevation, add 151.05 feet to the gage height to get an elevation relative to the North American Vertical Datum of 1988 (NAVD88). Add 147.57 feet to the gage height at this location to get an elevation relative to National Geodetic Vertical Datum of 1929 (NGVD29).

Graph updated: Monday - Nov 18, 2024 at 12:59:41 EST

Water Temperature

Graph updated: Monday - Nov 18, 2024 at 12:59:44 EST

Specific Conductance

Graph updated: Monday - Nov 18, 2024 at 12:59:36 EST

pH

Graph updated: Monday - Nov 18, 2024 at 12:59:42 EST

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 12:59:37 EST

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 the Oswego Dam site.

Graph updated: Monday - Nov 18, 2024 at 12:59:37 EST

Turbidity

Turbidity data are measured in FNU units.

Graph updated: Monday - Nov 18, 2024 at 12:59:46 EST

Chlorophyll Fluorescence

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

Graph updated: Monday - Nov 18, 2024 at 12:59:39 EST

Phycocyanin Fluorescence

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

Graph updated: Monday - Nov 18, 2024 at 12:59:40 EST

Fluorescent Dissolved Organic Matter (fDOM)

The fDOM signal provides an estimate of the concentration of dissolved organic matter in the river.

Graph updated: Monday - Nov 18, 2024 at 12:59:46 EST