Order Remanding 2020 Section 401 Rule with Vacatur
Order from United State District Court Northern District of California that remands and vacates the 2020 Section 401 rule under the Clean Water Act.
QA planning process for NEP grantees
Printable and accessible PDF version of a flowchart showing the approval process for Quality Assurance Project Plans for National Estuary Program grantees.
Requirements for 401 Water Quality Certification Request
This table describes the required elements, documents, and actions to submit your certification request to the Department of Ecology.
Draft 2021-2025 Section 309 Assessment & Strategy
Every five years, states and territories are encouraged to conduct self-assessments of their coastal management programs to determine problems and enhancement opportunities within each of the nine enhancement areas—and to assess the effectiveness of existing management efforts to address identified problems.
Water Quality Combined funding program State Fiscal Year 2023 Applicant Workshop Notice
This is the announcement and detailed information for the Water Quality Combined funding program's State Fiscal Year 2023 Applicant Workshop for anyone wanting to apply for loan or grant funding from the Water Quality Combined funding program in this next application cycle.
Applicant Prep Tool for Water Quality Stormwater
This is the Applicant Prep Tool document for people applying for funding via a Water Quality Combined (specifically stormwater projects) funding program application in EAGL.
Whole effluent toxicity testing ensures wastewater does not harm aquatic life.
Modeling the environment
Computer models mathematically represent part of the environment to predict potential changes.
We collect data on the health of environmental systems that support plant and animal life.
Marine water & sediment monitoring
We conduct water and sediment long-term monitoring to identify ecosystem changes.
Freshwater fish contaminant monitoring
We analyze freshwater fish for various toxic chemicals.
Models and tools for water quality improvement
We use models to predict water quality changes to help find strategies to address pollution.
Freshwater Aquatic Plants Manual
An illustrated guide to some of the more common freshwater aquatic plants found in Washington, such as hydrilla, milfoil, pondweeds, bladderworts, and more.
Models & spreadsheets
Computer models predict changes and spreadsheets calculate. We offer these tools to the public.
Eyes over Puget Sound
We use aerial photos and data from our monitoring stations and ferries to report on Puget Sound.
Monitoring watersheds for salmonids
Does salmon habitat restoration work? Our Intensively Monitored Watersheds program aims to find out.
River & stream water quality index
The Freshwater Quality Index can help you learn about river and stream health.
Stream biological monitoring
We evaluate the health of rivers and streams by studying multiple aquatic communities.