Marine Water photo

Marine Water Quality Monitoring

Estuaries like the Puget Sound have naturally large differences in water quality. We monitor marine water in Puget Sound, Grays Harbor and Willapa Bay using seaplanes, ferries, and moored instruments.

Our Products at a Glance: (navigate, stop and click slide show )


Marine Conditions at a Glance:

Water Surface image here

Conditions at the Water Surface for the Last Month:

Update 2/17/15

Patches of jellyfish persist in finger inlets of South Sound. First signs of growing phytoplankton are seen where water is turning green. Otherwise, the surface waters are nice shades of blue and green and, as expected, carry sediment near rivers. (Read more)

Water Surface image here

Conditions in the Water Column for the Last Month:

Update 2/17/15

Puget Sound is a lot warmer at the end of 2014 with new maximum temperatures observed throughout the Sound! The higher dissolved oxygen and cold temperature anomalies in Hood Canal are disappearing. (Read more)

Tidal Effects image here

Water Masses for the Last Month at Selected Locations:

Update 2/17/15

Compared to past years, 2015 starts with warmer water and lower salinity at Mukilteo. Dissolved oxygen is rebounding. (Read more)

Weather image here

Natural Influences for the Last Month:

Update 2/17/15

The air temperatures and ocean conditions remain warm. Rivers are above normal except at the coast (Chehalis). The past week has generally been sunny and dry across the region. (Read more)


Eyes Over Puget Sound

Ferry-Based Monitoring

Marine Flight Program

Algae Blooms

Nutrient and Oxygen Trends