TUALATIN RIVER AT OSWEGO DAM, NEAR WEST LINN, OR
USGS 14207200 · Oregon · reports water temperature, dissolved oxygen, pH, turbidity, specific conductance
Reading TUALATIN RIVER AT OSWEGO DAM, NEAR WEST LINN, OR…
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USGS 14207200 · Oregon · reports water temperature, dissolved oxygen, pH, turbidity, specific conductance
What the agencies suggest
Use a thermometer to check water temperatures frequentlyOregon Department of Fish and Wildlife
General guidance from the readings and the published lines named above, not a fishing forecast. Local rules and closures come first.
Reading Nov 5, 7:00 PM PST · provisional USGS data
No flow at this gauge. USGS does not publish discharge here, so there are no flow statistics either; it reports what is shown. Flow on the same river: TUALATIN RIVER AT WEST LINN, OR (USGS 14207500, 0.6 miles away).
Water temperature, last 7 days: 169 readings from Oct 29, 8:00 PM PDT to Nov 5, 7:00 PM PST; ranging 52.7 to 54.7 °F; latest 53.6 °F.
USGS provisional data may be revised. Source: USGS instantaneous values.
| Time | Water temperature (°F) |
|---|---|
| Nov 5, 7:00 PM PST | 53.6 |
| Nov 5, 6:00 PM PST | 53.8 |
| Nov 5, 5:00 PM PST | 53.8 |
| Nov 5, 4:00 PM PST | 53.8 |
| Nov 5, 3:00 PM PST | 54 |
| Nov 5, 2:00 PM PST | 54.1 |
| Nov 5, 1:00 PM PST | 54.1 |
| Nov 5, 12:00 PM PST | 53.8 |
| Nov 5, 11:00 AM PST | 53.8 |
| Nov 5, 10:00 AM PST | 53.6 |
| Nov 5, 9:00 AM PST | 53.6 |
| Nov 5, 8:00 AM PST | 53.6 |
| Nov 5, 7:00 AM PST | 53.6 |
| Nov 5, 6:00 AM PST | 53.6 |
| Nov 5, 5:00 AM PST | 53.6 |
| Nov 5, 4:00 AM PST | 53.6 |
| Nov 5, 3:00 AM PST | 53.6 |
| Nov 5, 2:00 AM PST | 53.6 |
| Nov 5, 1:00 AM PST | 53.6 |
| Nov 5, 12:00 AM PST | 53.4 |
| Nov 4, 11:00 PM PST | 53.4 |
| Nov 4, 10:00 PM PST | 53.4 |
| Nov 4, 9:00 PM PST | 53.4 |
| Nov 4, 8:00 PM PST | 53.2 |
| Nov 4, 7:00 PM PST | 53.2 |
| Nov 4, 6:00 PM PST | 53.2 |
| Nov 4, 5:00 PM PST | 53.2 |
| Nov 4, 4:00 PM PST | 53.4 |
| Nov 4, 3:00 PM PST | 53.4 |
| Nov 4, 2:00 PM PST | 53.4 |
| Nov 4, 1:00 PM PST | 53.4 |
| Nov 4, 12:00 PM PST | 53.1 |
| Nov 4, 11:00 AM PST | 52.9 |
| Nov 4, 10:00 AM PST | 52.9 |
| Nov 4, 9:00 AM PST | 52.9 |
| Nov 4, 8:00 AM PST | 52.9 |
| Nov 4, 7:00 AM PST | 53.1 |
| Nov 4, 6:00 AM PST | 53.1 |
| Nov 4, 5:00 AM PST | 53.2 |
| Nov 4, 4:00 AM PST | 53.2 |
| Nov 4, 3:00 AM PST | 53.2 |
| Nov 4, 2:00 AM PST | 53.2 |
| Nov 4, 1:00 AM PST | 53.2 |
| Nov 4, 12:00 AM PST | 53.2 |
| Nov 3, 11:00 PM PST | 53.2 |
| Nov 3, 10:00 PM PST | 53.2 |
| Nov 3, 9:00 PM PST | 53.2 |
| Nov 3, 8:00 PM PST | 53.2 |
| Nov 3, 7:00 PM PST | 53.2 |
| Nov 3, 6:00 PM PST | 53.2 |
| Nov 3, 5:00 PM PST | 53.2 |
| Nov 3, 4:00 PM PST | 53.2 |
| Nov 3, 3:00 PM PST | 53.2 |
| Nov 3, 2:00 PM PST | 53.2 |
| Nov 3, 1:00 PM PST | 53.1 |
| Nov 3, 12:00 PM PST | 52.9 |
| Nov 3, 11:00 AM PST | 52.7 |
| Nov 3, 10:00 AM PST | 52.7 |
| Nov 3, 9:00 AM PST | 52.7 |
| Nov 3, 8:00 AM PST | 52.7 |
| Nov 3, 7:00 AM PST | 52.7 |
| Nov 3, 6:00 AM PST | 52.7 |
| Nov 3, 5:00 AM PST | 52.7 |
| Nov 3, 4:00 AM PST | 52.7 |
| Nov 3, 3:00 AM PST | 52.7 |
| Nov 3, 2:00 AM PST | 52.7 |
| Nov 3, 1:00 AM PST | 52.7 |
| Nov 3, 12:00 AM PST | 52.7 |
| Nov 2, 11:00 PM PST | 52.9 |
| Nov 2, 10:00 PM PST | 52.9 |
| Nov 2, 9:00 PM PST | 52.9 |
| Nov 2, 8:00 PM PST | 52.9 |
| Nov 2, 7:00 PM PST | 52.9 |
| Nov 2, 6:00 PM PST | 53.1 |
| Nov 2, 5:00 PM PST | 53.2 |
| Nov 2, 4:00 PM PST | 53.2 |
| Nov 2, 3:00 PM PST | 53.2 |
| Nov 2, 2:00 PM PST | 53.4 |
| Nov 2, 1:00 PM PST | 53.4 |
| Nov 2, 12:00 PM PST | 53.2 |
| Nov 2, 11:00 AM PST | 53.1 |
| Nov 2, 10:00 AM PST | 52.9 |
| Nov 2, 9:00 AM PST | 52.9 |
| Nov 2, 8:00 AM PST | 52.9 |
| Nov 2, 7:00 AM PST | 52.9 |
| Nov 2, 6:00 AM PST | 52.9 |
| Nov 2, 5:00 AM PST | 52.9 |
| Nov 2, 4:00 AM PST | 52.9 |
| Nov 2, 3:00 AM PST | 52.9 |
| Nov 2, 2:00 AM PST | 52.9 |
| Nov 2, 1:00 AM PST | 52.9 |
| Nov 2, 12:00 AM PST | 52.9 |
| Nov 1, 11:00 PM PST | 52.9 |
| Nov 1, 10:00 PM PST | 53.1 |
| Nov 1, 9:00 PM PST | 53.1 |
| Nov 1, 8:00 PM PST | 53.1 |
| Nov 1, 7:00 PM PST | 53.1 |
| Nov 1, 6:00 PM PST | 53.1 |
| Nov 1, 5:00 PM PST | 53.2 |
| Nov 1, 4:00 PM PST | 53.2 |
| Nov 1, 3:00 PM PST | 53.2 |
| Nov 1, 2:00 PM PST | 53.2 |
| Nov 1, 1:00 PM PST | 53.4 |
| Nov 1, 12:00 PM PST | 53.4 |
| Nov 1, 11:00 AM PST | 53.4 |
| Nov 1, 10:00 AM PST | 53.4 |
| Nov 1, 9:00 AM PST | 53.4 |
| Nov 1, 8:00 AM PST | 53.4 |
| Nov 1, 7:00 AM PST | 53.4 |
| Nov 1, 6:00 AM PST | 53.4 |
| Nov 1, 5:00 AM PST | 53.4 |
| Nov 1, 4:00 AM PST | 53.6 |
| Nov 1, 3:00 AM PST | 53.6 |
| Nov 1, 2:00 AM PST | 53.6 |
| Nov 1, 1:00 AM PST | 53.6 |
| Nov 1, 1:00 AM PDT | 53.6 |
| Nov 1, 12:00 AM PDT | 53.6 |
| Oct 31, 11:00 PM PDT | 53.8 |
| Oct 31, 10:00 PM PDT | 53.8 |
| Oct 31, 9:00 PM PDT | 53.8 |
| Oct 31, 8:00 PM PDT | 53.8 |
| Oct 31, 7:00 PM PDT | 54 |
| Oct 31, 6:00 PM PDT | 54 |
| Oct 31, 5:00 PM PDT | 53.8 |
| Oct 31, 4:00 PM PDT | 53.8 |
| Oct 31, 3:00 PM PDT | 54 |
| Oct 31, 2:00 PM PDT | 54 |
| Oct 31, 1:00 PM PDT | 53.6 |
| Oct 31, 12:00 PM PDT | 53.6 |
| Oct 31, 11:00 AM PDT | 53.6 |
| Oct 31, 10:00 AM PDT | 53.6 |
| Oct 31, 9:00 AM PDT | 53.6 |
| Oct 31, 8:00 AM PDT | 53.8 |
| Oct 31, 7:00 AM PDT | 53.8 |
| Oct 31, 6:00 AM PDT | 53.8 |
| Oct 31, 5:00 AM PDT | 54 |
| Oct 31, 4:00 AM PDT | 54 |
| Oct 31, 3:00 AM PDT | 54 |
| Oct 31, 2:00 AM PDT | 54.1 |
| Oct 31, 1:00 AM PDT | 54.1 |
| Oct 31, 12:00 AM PDT | 54.3 |
| Oct 30, 11:00 PM PDT | 54.3 |
| Oct 30, 10:00 PM PDT | 54.3 |
| Oct 30, 9:00 PM PDT | 54.5 |
| Oct 30, 8:00 PM PDT | 54.5 |
| Oct 30, 7:00 PM PDT | 54.5 |
| Oct 30, 6:00 PM PDT | 54.5 |
| Oct 30, 5:00 PM PDT | 54.7 |
| Oct 30, 4:00 PM PDT | 54.7 |
| Oct 30, 3:00 PM PDT | 54.5 |
| Oct 30, 2:00 PM PDT | 54.5 |
| Oct 30, 1:00 PM PDT | 54.5 |
| Oct 30, 12:00 PM PDT | 54.3 |
| Oct 30, 11:00 AM PDT | 54.3 |
| Oct 30, 10:00 AM PDT | 54.3 |
| Oct 30, 9:00 AM PDT | 54.5 |
| Oct 30, 8:00 AM PDT | 54.5 |
| Oct 30, 7:00 AM PDT | 54.5 |
| Oct 30, 6:00 AM PDT | 54.5 |
| Oct 30, 5:00 AM PDT | 54.7 |
| Oct 30, 4:00 AM PDT | 54.7 |
| Oct 30, 3:00 AM PDT | 54.7 |
| Oct 30, 2:00 AM PDT | 54.7 |
| Oct 30, 1:00 AM PDT | 54.7 |
| Oct 30, 12:00 AM PDT | 54.7 |
| Oct 29, 11:00 PM PDT | 54.7 |
| Oct 29, 10:00 PM PDT | 54.7 |
| Oct 29, 9:00 PM PDT | 54.7 |
| Oct 29, 8:00 PM PDT | 54.5 |
Map of USGS gauge 14207200 and the river around it
Where TUALATIN RIVER AT OSWEGO DAM, NEAR WEST LINN, OR sits, with 4 other gauges on the same river and our water's map point.
Under ODFW's 68°F line. Water 53.6°F now; the highest in the last 24 hours was 54.1°F. That is under the 68°F at which ODFW says trout, steelhead and salmon “start to feel stressed”. “Fish early in the morning when water temperatures are cooler and fish are more active.”
5 tips for fishing in hot water (Oregon Department of Fish and Wildlife)Species the agency lists for Tualatin River: Chinook Salmon, Coho Salmon.
From our page for Tualatin River, on the same river as this gauge; the agency list is for the water, not this exact reach. Source: Salmon and steelhead sport catch waterbodies (2025 expanded catch by month and waterbody code) (Oregon Department of Fish and Wildlife).
Cold water. Water 53.6°F. NWS: “Cold shock can be just as severe and dangerous from water temperatures of 50-60°F (10-15°C) as it is from water at 35°F (2°C).” “Always wear a life jacket in and around the water.”
Cold Water Hazards and Safety (National Weather Service)Turn Around Don't Drown. “A mere 6 inches of fast-moving flood water can knock over an adult.” No flow number makes a crossing safe; if in doubt, stay out.
Turn Around Don't Drown (National Weather Service)Dissolved oxygen 6.4 mg/L at Nov 5, 7:00 PM PST; 7-day range 6.2–7.2 mg/L
Below EPA's coldwater mean: 6.4 mg/L is under the 6.5 mg/L 30-day mean EPA sets for coldwater fish (other life stages), though above its 4 mg/L minimum. One reading is not a 30-day mean. Wyoming Game and Fish: “Higher water temperatures lead to lower oxygen levels.”
Quality Criteria for Water 1986 (“Gold Book”): dissolved oxygen, Table 1; pH (U.S. Environmental Protection Agency) Anglers encouraged to adjust fishing practices as temperatures rise (Wyoming Game and Fish Department)pH 7 at Nov 5, 7:00 PM PST; 7-day range 7–7.1
Within EPA's freshwater range: pH 7 is within the 6.5–9 range EPA gives for freshwater aquatic life.
Quality Criteria for Water 1986 (“Gold Book”): dissolved oxygen, Table 1; pH (U.S. Environmental Protection Agency)Turbidity 1.4 FNU at Nov 5, 7:00 PM PST; 7-day range 1.1–5.6 FNU
Water clarity: Turbidity measures the relative clarity of water: higher means murkier. No agency publishes a fishing threshold for it; compare with this gauge's own recent readings.
Turbidity and Water (U.S. Geological Survey)Specific conductance 239 µS/cm at Nov 5, 7:00 PM PST; 7-day range 209–291 µS/cm
Dissolved ions: Specific conductance rises with the ions dissolved in the water. No fishing threshold is published for it; compare with this gauge's own recent readings.
Conductivity (Electrical Conductance) and Water (U.S. Geological Survey)Guidance from the readings above and the published thresholds named with each line; not a fishing forecast, a safety guarantee or a statement about access. Local rules and closures come first.
The National Weather Service has no flood-stage gauge here, so no official flood category is shown.
Checked Nov 5, 7:18 PM PST; readings refresh at most every 15 minutes and statistics daily. Provisional USGS data can be revised. Conditions change: re-check before you go. This is general guidance, not a fishing forecast, a safety guarantee or a statement about access.