Puget Sound Marine Waters 2025 Overview

Published September 02, 2026

The 15th annual Puget Sound Marine Waters Overview combines summaries of monitoring data for marine conditions occurring in 2025. It represents the collective work of federal, tribal, state, and local agencies, academia, nonprofits, and private and volunteer groups.

Puget Sound Marine Waters 2025 Overview report cover with image of a beach with driftwood and trees in the background on a sunny day.

This Marine Waters Overview provides a perspective of 2025 Puget Sound marine water quality and conditions and associated biota from comprehensive monitoring and observing programs. While the report focuses on the marine waters of greater Puget Sound, additional selected conditions are also included due to their influence on Puget Sound waters. These include large-scale climate indices and conditions along the Washington coast. It is important to document and understand regional drivers of variability and patterns on various timescales so that water quality data may be interpreted with these variations in mind, to better attribute human effects versus natural variations and change. This is the 15th annual report produced by the PSEMP Marine Waters Workgroup.

Citation

PSEMP Marine Waters Workgroup. 2026. Puget Sound marine waters: 2025 overview.
J. Apple, R. Wold, K. Stark, A. Thomson, S. Kantor, and J. Newton (Eds.)

About the Author

The Puget Sound Ecosystem Monitoring Program (PSEMP) is a collaborative network of subject matter experts from many monitoring organizations and different parts of the region. Together, they generate, organize, synthesize, and communicate scientific information, across political and organizational boundaries, to track ecosystem conditions that directly address management and science questions critical to Puget Sound recovery.

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Reports

Author

Puget Sound Ecosystem Monitoring Program