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 8/18/14

Sea surface temperatures >15 degree C. Organic surface debris in South and Central Sound is high. Red-brown blooms and numerous patches of jellyfish in finger inlets of South Sound, Sinclair, Dyes Inlets, and Bellingham Bay. Bloom in Whidbey Basin. MODIS reveals blooms in Whidbey Basin and Carr Inlet. (Read more)

Water Surface image here

Conditions in the Water Column for the Last Month:

Update 8/18/14

In early 2014, colder, saltier conditions developed in Puget Sound with lower oxygen in some areas. Now Puget Sound is warmer and saltier with continued lower oxygen in areas. Hood Canal remains cold and salty with higher oxygen. (Read more)

Tidal Effects image here

Conditions at Tidally Influenced Locations for the Last Month:

Update 8/18/14

In the Mukilteo moorings, we observed higher temperature, lower salinity, and lower dissolved oxygen than past few years. (Read more)

Weather image here

Weather and Coastal Conditions for the Last Month:

Update 8/18/14

Sunshine and warm temperatures have returned. The Fraser River flow is normal, Skagit River is below normal, but the Puyallup and Nisqually Rivers are flowing high. (Read more)


Eyes Over Puget Sound

Ferry-Based Monitoring

Marine Flight Program

Algae Blooms

Nutrient and Oxygen Trends