Oregon & Washington chlorophyll chart
Satellite data from
The northern Oregon and southern Washington coast — Depoe Bay, Pacific City and Tillamook Bay north past Astoria and the Columbia River bar to Westport and Grays Harbor — out across the shelf break and Astoria Canyon into deep water.
Today’s read
| Station | Water | Observed |
|---|---|---|
| Astoria Canyon, OR (46248) | 58.8°F | |
| Columbia River Bar (46029) | 57.7°F | |
| Tillamook, Or (46089) | 59.4°F | |
| Clatsop Spit, OR (46243) | 55.0°F | |
| Tillamook Bay South Jetty, OR (46278) | 53.1°F |
On this chart: Westport, the Columbia River bar, Astoria, Ilwaco, Grays Harbor, Tillamook Bay, Pacific City, Depoe Bay and Astoria Canyon.
How to read today’s Pacific Northwest chart
Work the colour line. Green water is productive and blue water is clean; bait stacks on the seam between them, and gamefish hunt that seam. The contours above trace the productivity edges so the line is something you can put a waypoint on.
The highest-percentage water offshore is where a chlorophyll edge lines up with a temperature break. Check this against the Pacific Northwest SST chart and start where they overlap.
Pair it with temperature
Chlorophyll shows you the food. Temperature shows you whether the conditions suit the fish you are after. See today’s Pacific Northwest SST chart →
Frequently asked
How often does the Pacific Northwest chlorophyll chart update?
The image is regenerated twice a day from the latest satellite chlorophyll data in the Catalysst app, rendered on a log scale and clipped to the coastline. The date shown is the date of the satellite data, which moves forward about once a day.
What area does the Pacific Northwest chlorophyll chart cover?
From 44.7°N to 47.3°N and 127.0°W to 123.0°W. Ports and landmarks on it include Westport, the Columbia River bar, Astoria, Ilwaco, Grays Harbor, Tillamook Bay, Pacific City, Depoe Bay and Astoria Canyon.
Do you fish the green water or the blue water?
Neither — you fish the edge between them. Bait gets pushed against the clean-water line and predators hunt that seam. The highest-percentage water is where a chlorophyll edge stacks on top of a temperature break.
Why does chlorophyll matter if I already have SST?
Temperature tells you where conditions suit the predator; chlorophyll tells you where the food is. A break with no bait on it is just a line in the water.
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