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 4/29/15

Patches of jellyfish are present in finger inlets of South Sound and Sinclair Inlet. Strong red bloom in Sinclair Inlet. Waters show signs of blooms only in confined bays. Otherwise, the surface waters appear very clear. High suspended sediment in Port Susan. (Read more)

Water Surface image here

Conditions in the Water Column for the Last Month:

Update 4/29/15

Warm water in Puget Sound because of The Blob. Temperatures are the highest on record since 1989. Oxygen is exhibiting new historical minima, an unusual condition given the time of year. (Read more)

Tidal Effects image here

Water Masses for the Last Month at Selected Locations:

Update 4/29/15

Warmer than normal water temperature. Steady increase in temperature the past week. Temperature and salinity variation may be mostly influenced by winds. (Read more)

Weather image here

Natural Influences for the Last Month:

Update 4/29/15

Air temperature and ocean conditions remain warm. River flows are lower to the south and higher to the north. It rained only 0.7 inch (15 mm) in the past two weeks. (Read more)


Eyes Over Puget Sound

Ferry-Based Monitoring

Marine Flight Program

Algae Blooms

Nutrient and Oxygen Trends