WRIA 1 (Nooksack) Adjudication
WRIA 1 (Nooksack) Adjudication
On March 17, we sent adjudication documents via certified mail to all landowners in Water Resources Inventory Area (WRIA) 1 who are within the area of a recorded water right or outside a public water system service area. If you use water directly from surface or groundwater in WRIA 1, you need to file a court claim form, even for small uses like single homes on wells.
Did you receive your court claim form? Go here for next steps.
If you only use water from a public water system, you don’t have to do anything.
You can file your court claim form online using the Whatcom County Superior Court's Guide and File system. We suggest using Chrome, Edge or Firefox. Safari is not recommended.
For those who receive the court claim form this spring, the deadline for filing a claim is May 1, 2026.
For more information, visit the Water Adjudication Case Documents and Docket | Whatcom County, WA - Official Website
Latest news, videos, and events
Ecology events
Join us at our open house and webinar. We’ll share resources and tools to help you file your court claim form.
- Open house (in person) for landowners with homes on a well. Bring your court claim form and questions. Come and go anytime 5:30-7p.m. Registration Required.
- May 28 Pioneer Pavillion, 2007 Cherry Street Ferndale, WA 98248
- May 29 Meridian Middle School, 861 Ten Mile Rd Lynden, WA 98264
- Online webinar: Join us for our June webinar. Get an overview of the adjudication process and some tips to file your court claim form.
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June 24 Filing your court claim 5:30-7p.m. Registration required. Webinar Registration - Zoom
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New videos
- How to file a court claim form - This video will guide you through the claim form explaining the required information and how to provide it
- WRIA 1 web map tool - This interactive map is designed to assist anyone involved in the Nooksack adjudication by helping them locate the water rights associated with their property.
Join our email list for updates about the WRIA 1 adjudication.
For past issues of the Let’s Talk About Adjudication e-newsletter, see this index.
Get information...
Where is the Nooksack watershed?
WRIA 1, often called the Nooksack area, includes land surrounding the Nooksack River system. The Nooksack River mainstem is fed by the North, Middle, and South forks of the Nooksack River. WRIA 1 includes various other streams such as the Lummi River and Dakota, Fishtrap, Bertrand, TenMile, and Whatcom creeks.
This adjudication will include all areas of WRIA 1, regardless of whether they are directly connected to the Nooksack River system. Use our Watershed look-up tool to learn if your address is within WRIA 1.
WRIA 1 Nooksack Watershed map (click to enlarge)
What is adjudication? [əˌjo͞odəˈkāSHən]
Adjudication is a legal process in Whatcom County Superior Court between the Washington Department of Ecology and all local water users. This process requires water users to self-report their water use in a form online or on paper. The court will make a decision that lists water uses in priority (old to new), including where and how much water is legal on each parcel of land. It does not involve criminal proceedings or penalties. It does not change the current law on water use.
A video describing Nooksack Adjudication: Receiving your court claim form
More about adjudication
Starting March 2025, Ecology will send forms by certified mail to all property owners in Water Resources Inventory Area 1 (WRIA 1) who are within the area of a recorded water right or outside a public water system service area. This does not include people who only use water from a public water system like a city connection.
If you receive a form, our records show you may be a water rights holder or claimant. You’ll fill out the form about your water use and submit it to the court in person, by mail, or online within one year of receipt.
In the following years, the Whatcom County Superior Court will review the forms and inventory all legal water rights. The adjudication process will determine whether each water right on a source is legal, how much water can be used, and its priority during water shortages. Then, Ecology will issue adjudicated certificates for all these uses.
Why do we need adjudication in WRIA 1?
Ecology is responsible for managing the water resources of the state. This includes issuing permits for the right to use water and protecting instream resources for the benefit of the public. WRIA 1 provides critical habitat for endangered and threatened species, but it faces growing pressure from water users and uncertainty about legal water use.
Due to the changing climate, our region is experiencing warmer temperatures and drier summer conditions compared to historical norms. Snow that used to regularly build our mountain snowpack for spring melts now falls as rain in the winter. Much of the area's streams and rivers are dependent on melting snow in the late spring and summer months when the water demand is the highest. Unfortunately, the snow that used to provide natural water storage is no longer reliable.
Over the years, state and local leaders have worked hard to resolve disputes over WRIA 1 water. This has involved rulemaking, county growth management planning, and enforcement. But years of work has failed to reach a full solution. In 2019, the Legislature funded an Ecology assessment of the statewide need for adjudication, and Ecology identified WRIA 1 as a top priority area. As recommended in this report, the Legislature has since provided funding for the adjudication to be filed.
Over time, the adjudication will make it easier for farmers and others to identify legal water rights to buy, sell, or lease through water banks. Once there is a court decree determining all the legal rights to use water, negotiating changes or mitigation will be easier. Additionally, the adjudication is expected to protect streamflows by clarifying legal stream protections and quantifying the legal quantity, place, and season of uses of valid water rights and vested claims. Right now, this information is very limited. Adjudication will create the first definitive inventory of WRIA 1 water rights for the future.
Ultimately, adjudication will enable reliable water management and provide predictability and consistency that will serve the local economy, communities and environment.
Want to know more about this adjudication?
Join our email list for updates about the WRIA 1 adjudication.
For past issues of the Let’s Talk About Adjudication e-newsletter, see this index.
Questions about water right documents? The fastest and easiest way to get information about water right documents at your property is to call or email us. Leave a message at 360-255-4406 or email WRadjudications@ecy.wa.gov. Make sure to include your name, address of your water usage, and an email or phone number for us to contact you. You can also use the Water Rights Search database.
Want to hear more? We understand this is a complex process. Contact us if you'd like us to speak to your group or association.
For media inquiries, please contact Jimmy Norris, Water Resources Communications Manager at jimmy.norris@ecy.wa.gov or (360) 480-5722.
Contact information
Adjudication Court Claim Form Customer Support
WRadjudications@ecy.wa.gov
360-255-4406
Program Contacts
Robin McPherson
Adjudications Manager
WRAdjudications@ecy.wa.gov
Sheila Coughlan
Environmental Planner
sheila.coughlan@ecy.wa.gov
564-233-1879