Spring on Hood Canal means one thing above everything else: it’s time to get your feet wet, your hands dirty, and your bucket full. The 2026 shellfish season is open along Hood Canal — but this year, the rules have changed, and knowing what’s different before you head to the beach could save you a citation and protect the resource that makes this place special.
The Washington Department of Fish and Wildlife updated its recreational shellfish regulations effective April 1, 2026, and two changes matter most for Hood Canal harvesters. First, the minimum size for cockles is now 2½ inches — up from the previous 1½-inch minimum. If you’re measuring cockles at the beach, take that extra moment; undersized cockles go back in the water. Second, the daily limit for geoduck has dropped to one per person per day, down from three. Geoduck beds recover slowly, and WDFW made this call to protect long-term populations in the intertidal zones most accessible to recreational harvesters.
These aren’t minor tweaks. If you haven’t updated your shellfish knowledge since last season, read this before you go.
Where to Go Right Now: Potlatch Is Open
Potlatch State Park — about 12 miles north of Belfair on Hood Canal — is one of the best public shellfish beaches on the canal, and it’s open for clams, mussels, and oysters through May 31. The beach at Potlatch has excellent oyster beds near the highway stretch and extensive Manila clam habitat across the tide flats. Native littleneck clams are present throughout. You’ll need a valid Washington shellfish license (available at WDFW Go Fish Washington online or at local retailers) and a Discover Pass for the parking lot.
Timing matters: low tide is your friend. Check the NOAA tide tables for Hood Canal before you go — the best harvesting windows are during minus or very low tides that expose the full intertidal zone.
One important note for Hood Canal harvesters: Dosewallips State Park — a popular spot further up the canal in Jefferson County — is closed to all clams, mussels, and oysters in 2026 under the new WDFW regulations. If Dosewallips was your go-to beach, Potlatch is your best alternative in the region.
Always Check Biotoxins Before You Go
This cannot be overstated: marine biotoxins are the silent hazard of shellfish harvesting in Hood Canal. Paralytic Shellfish Poisoning (PSP) and domoic acid contamination are real risks in these waters, and they cannot be detected by smell, appearance, or cooking. A beach that was safe last week may be closed this week.
Before every trip — every single time — check the Washington State Department of Health Biotoxin Safety Map at doh.wa.gov/ShellfishSafety.htm or call the DOH Biotoxin Hotline at 1-800-562-5632. Mason County has experienced Hood Canal biotoxin closures in past seasons. The current status changes with water conditions, so bookmark the page and check it same-day.
Tahuya State Forest: Trail Update Before You Pack the Bikes
If your spring outdoor plans include Tahuya State Forest — and for North Mason families, they probably do — know that portions of the Howell Lake Loop Trail remain temporarily closed due to a washed-out bridge. The rest of the Tahuya trail system remains open for ORV riding, mountain biking, and hiking, including the main OHV network. Check the Washington DNR website at dnr.wa.gov/GreenMountainTahuya for current closure details before loading the truck. Discover Pass required for parking at most trailheads.
The Theler Wetlands: A New Trail Loop Is Coming
This summer, the Mary E. Theler Wetlands will undergo a transformation that’s been years in the making. The Hood Canal Salmon Enhancement Group (HCSEG), in partnership with WDFW, is constructing a 1,200-foot elevated piling-support boardwalk in the footprint of the removed levees — fully reconnecting the estuary trail loop that was broken when the old levee system was removed as part of the Union River estuary restoration project.
The restoration work targets habitat for Hood Canal summer chum salmon, listed as threatened under the Endangered Species Act. When the boardwalk is complete, visitors to the Theler Wetlands will have a connected loop trail that takes them across the restored estuary — a genuinely rare ecological experience right in Belfair’s backyard. Expect some construction activity in the preserve this summer, but the main trail sections remain open.
Belfair State Park: Reserve Your Spot Now
Belfair State Park’s Tree Loop campground — the tent camping section right where Little Mission Creek meets Hood Canal — opens for 2026 reservations on May 15. The Tree Loop has about 60 sites and is limited to rigs 18 feet or shorter, making it a tent and small camper area. It books up fast for summer weekends. Make your reservation at washington.goingtocamp.com the moment the window opens. Season runs May 15 through September 15.
For Hood Canal day use, Belfair State Park remains one of the most accessible spots in North Mason for families — swimming, kayak launches, and the warm, shallow waters that Hood Canal is famous for in summer.
Your Outdoor Season Checklist
- Shellfish license: Required for all harvest over age 15. Buy online at fishhunt.dfw.wa.gov or at local sporting goods retailers.
- Discover Pass: Required at Potlatch, Tahuya, and Belfair State Park parking areas. $30/year or $11.50/day at licensing agents or discoverypass.wa.gov.
- Biotoxin check: Every trip, same day — doh.wa.gov/ShellfishSafety.htm or 1-800-562-5632.
- New 2026 rules: Cockle minimum 2½ inches; geoduck limit 1/person/day.
- Tahuya Howell Lake Loop: Partially closed — washed-out bridge. Check dnr.wa.gov for current status.
- Belfair State Park Tree Loop: Reservations open May 15 at washington.goingtocamp.com.
Frequently Asked Questions
What changed in Hood Canal shellfish rules for 2026?
Two key changes took effect April 1, 2026: the minimum harvest size for cockles increased from 1½ inches to 2½ inches, and the daily limit for geoduck dropped from three per person to one per person. These changes apply statewide, including Hood Canal beaches.
Where can I dig clams near Belfair in 2026?
Potlatch State Park, about 12 miles north of Belfair on Hood Canal, is the closest and best public shellfish beach. Clam, mussel, and oyster season runs April 1 through May 31. A shellfish license and Discover Pass are required. Always verify the beach is open for biotoxins before harvesting — check doh.wa.gov/ShellfishSafety.htm.
Is Dosewallips open for shellfish in 2026?
No. Dosewallips State Park is closed to all clams, mussels, and oysters in 2026 under new WDFW regulations. Potlatch State Park is the recommended alternative for Hood Canal area harvesters.
How do I check if Hood Canal shellfish beaches are open for biotoxins?
Check the Washington State DOH Shellfish Safety Map at doh.wa.gov/ShellfishSafety.htm or call the Biotoxin Hotline at 1-800-562-5632. Check same-day before every harvesting trip — biotoxin status can change quickly with water conditions.
Is the Howell Lake Loop Trail open at Tahuya State Forest?
Portions of the Howell Lake Loop Trail are temporarily closed due to a washed-out bridge as of spring 2026. The rest of the Tahuya State Forest trail system remains open. Check current conditions at dnr.wa.gov/GreenMountainTahuya before your visit.
When does Belfair State Park Tree Loop open for reservations in 2026?
Reservations for the Tree Loop campground at Belfair State Park open May 15, 2026 at washington.goingtocamp.com. The season runs May 15 through September 15. Sites are limited to rigs 18 feet or shorter.
Can I harvest shellfish on private Hood Canal shoreline?
Recreational harvest from private tidelands you own or have permission to access may be subject to the same WDFW rules including the new 2026 size and bag limits, plus DOH biotoxin status requirements. Contact WDFW or review the annual shellfish regulations pamphlet for specifics on private tidelands access.
Sources: WDFW 2026 Shellfish Regulations; WDFW Potlatch State Park Beach Page; WDFW Camas-Washougal Post-Record Feb 2026 proposed rule changes; WA DNR Green Mountain and Tahuya State Forest; HCSEG/WDFW Union River Estuary Restoration Project; WA State Parks Belfair State Park; WA DOH Biotoxin Information.
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