Birch Bay State Park stretches along 664 acres of shoreline on Birch Bay, southwest of Blaine. It’s a camping and shellfishing park at heart: the gentle bay is known for clamming, crabbing and beachcombing when conditions and seasons allow, and the campground comes with showers and a dump station for a comfortable overnight. Inland, the Terrell Marsh interpretive trail and another interpretive route give you a quieter, wildlife-rich walk. There’s a basketball court, picnic shelter and amphitheater too. A Discover Pass is required for day use. For a low-key shoreline weekend close to the Canadian border, it’s a Whatcom standby.

What you’ll find

The saltwater shoreline is the draw. Birch Bay is shallow and gentle, which makes it good for clamming, crabbing and beachcombing when the seasons are open and the tide cooperates — always check current shellfish rules and any closures before you harvest. The campground has showers and a dump station, so it’s set up for real overnights, not just a roadside pull-in. For dry land, the Terrell Marsh interpretive trail winds through wetland habitat with good birdwatching, and there’s a second interpretive trail, plus a basketball court, picnic shelter and amphitheater. Restrooms and parking are on site, and a Discover Pass is required for day-use parking.

Good for

Campers and shellfish harvesters get the most out of Birch Bay — it’s one of the more accessible spots in Whatcom to camp right by the water and dig clams or set crab pots. Families like the gentle beach for wading and beachcombing, and the marsh trail suits birders and anyone wanting a calm nature walk. It’s also a natural base for exploring the wider Birch Bay community and nearby Blaine. The main caveats: shellfishing is seasonal and rule-bound, and the campground is popular in summer, so reserve ahead.

When to go

Summer is peak for camping and beach days, and the campground books up — reserve well in advance for warm-weather weekends. Shellfishing windows depend on the season and on health closures, so the right time to clam or crab is dictated by current state rules rather than just the calendar; check before you go. The Terrell Marsh trail and birdwatching are rewarding year-round, with spring and fall especially good for wildlife. Time any low-tide beach activity to a tide table.

Getting there

Birch Bay State Park is southwest of Blaine on Birch Bay, reached via the Birch Bay-Lynden Road and Helweg Road area off I-5. There’s parking, restrooms, showers and a dump station, and the campground and day-use areas have their own access. Bring a Discover Pass for day-use parking. The shoreline and the marsh trails are somewhat separate parts of the park, so decide whether you’re there to beachcomb and harvest or to walk the wetland, and head for the matching area.

A local broker’s take

Birch Bay has carved out a niche as Whatcom’s relaxed shoreline community — a mix of vacation places, retirees and full-timers who like being on the water without Bellingham prices. The state park is a big part of the appeal, and so is the broader bay. I’m candid with buyers that Birch Bay is a drive from Bellingham’s jobs and services, and that some of the housing is seasonal in character, but for waterfront-leaning budgets it’s one of the better values in the county. If the bay lifestyle appeals, ask me what’s on the market out here.

Good to know

Can you go clamming and crabbing at Birch Bay State Park?

Yes, the gentle bay is known for clamming, crabbing and beachcombing, but it’s seasonal and subject to state shellfish rules and health closures. Always check current regulations before you harvest.

Does Birch Bay State Park have a campground?

Yes, there’s a shoreline campground with showers and a dump station. It’s popular in summer, so reserve a site well ahead for peak weekends.

Do you need a Discover Pass at Birch Bay State Park?

Yes, a Discover Pass is required for day-use parking, as at other Washington state parks.