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Regional Variation (by year) of Puget
Sound
Mean Conditions for All Years
In 2023 we made a preliminary examination of water properties from the southern Gulf
Islands, eastern Juan de Fuca Strait, and the Puget Sound Main Basin by obtaining archived
data from the Washington State Department of Ecology. Here we present mean conditions in
the Puget Sound (averaged over regions 18) for a) temperature, b) salinity, c) dissolved oxygen
content, and d) chlorophyll for all years. White lines indicate 17 °C in temperature plots, and
187 µM (6ppm) and 250 µM (8ppm) in O2 plots. Note that the depth axis is linear in depth in
the upper plots, but logarithmically scaled in the second row of plots to highlight near-surface
details (Chlorophyll plots show the logarithmic depth scales in both sets).
a) Temperature in upper 150m of the Strait. b) Salinity. c) 2015-2023 Anomalies from Mean Seasonal Climatology.
Dissolved Oxygen. d) Chlorophyll (note linear depth scale). Linear depth.
a) Temperature in upper 150m of the Strait. b) Salinity. c) 2011-2023 Anomalies from Mean Seasonal Climatology.
Dissolved Oxygen. d) Chlorophyll (note logarithmic depth Logarithmic depth.
scale).
