Loomis Lake
Washington

Loomis Lake

Available Activities
  • Hiking
  • Fishing

๐Ÿ†๐Ÿ†๐Ÿ†๐Ÿ† Pacific Coast Dunes โ€” Coastal dune lake on the Long Beach Peninsula โ€” the longest continuous sand beach in the US (28 miles!)

Loomis Lake State Park sits on a coastal dune lake on the Long Beach Peninsula โ€” home to the longest continuous sand beach in the United States at 28 miles! The Long Beach Peninsula separates Willapa Bay from the Pacific Ocean. Willapa Bay is one of the cleanest estuaries in the US and the largest producer of farmed oysters on the West Coast โ€” the Pacific oyster industry here was founded by Japanese immigrants who brought oyster seed from Miyagi Prefecture in the 1920sโ€“1930s. Loomis Lake formed behind the coastal dunes as groundwater filled the low spots between dune ridges.

Visitor Information

DetailInformation
LocationLong Beach Peninsula, WA
Entry FeeDiscover Pass required
Beach28 miles โ€” LONGEST in US!
OystersJapanese-founded industry 1920s!

About Loomis Lake

Loomis Lake is a coastal freshwater lake park on the Long Beach Peninsula in Pacific County โ€” the narrow spit of land between Willapa Bay and the Pacific Ocean. The lake is surrounded by shore pine forest and offers warm, sheltered swimming compared to the cold Pacific surf just a half-mile west.

Things to Do

Swimming and wading in the warm lake water, fishing for trout, kayaking, and picnicking. The Long Beach Peninsula has the world’s longest beach (28 miles), Leadbetter Point for birdwatching, and the town of Long Beach with its kite-flying heritage. Cranberry bogs dot the peninsula.

Insider Tips

Long Beach Peninsula: Loomis Lake sits on the Long Beach Peninsula โ€” a 28-mile sand spit on the Pacific coast. Pro tip: Long Beach claims to be the “World’s Longest Beach” โ€” while debatable, the unbroken 28-mile stretch is remarkable. Cranberry bogs: The peninsula is one of the largest cranberry-growing regions on the West Coast โ€” flooding the bogs for harvest creates stunning red landscapes in October.

Best Time to Visit

October: Cranberry harvest โ€” red bogs are spectacular. Summer: Beach season. Fall: Storm watching begins. Winter: Dramatic Pacific storms.

Frequently Asked Questions

How are cranberries harvested?

Cranberry bogs are flooded with water, then mechanical beaters knock the berries off the vines. Cranberries have air pockets inside โ€” they float to the surface, creating a stunning red carpet on the water. Workers coral the floating berries for collection. Washington is the 5th-largest cranberry producer in the US. The harvest (October) is one of the most photogenic agricultural events in America.

๐Ÿ–๏ธ Visit Loomis Lake

28-mile beach โ€” longest in the US! Japanese oyster heritage!

๐Ÿ“ WA Parks

Wildlife & Nature

Loomis Lake โ€” a day-use area on the Long Beach Peninsula in Pacific County โ€” provides freshwater lake access on the narrow peninsula between the Pacific Ocean and Willapa Bay. The lake supports rainbow trout fishing. Osprey hunt from perches. Great blue herons wade the shallows. The surrounding coastal forest of shore pine and Sitka spruce shelters band-tailed pigeons and varied thrushes. The park provides a quiet freshwater alternative to the ocean beaches.

Nearby Attractions

Long Beach โ€” 3 miles south โ€” has the longest continuous beach in the US (28 miles). Leadbetter Point State Park โ€” 10 miles north โ€” protects critical shorebird habitat. Cape Disappointment State Park โ€” 15 miles south โ€” has lighthouses and Lewis & Clark Interpretive Center. Oysterville โ€” 5 miles north โ€” is a historic oyster village.

Sarah Mitchell

About the Author

Outdoor Editor & Trail Expert

Sarah Mitchell is an outdoor writer and trail researcher with over 8 years of experience exploring state parks across America. As the lead editor at AmericasStateParks.org, she has personally visited more than 200 parks in 42 states, logging thousands of trail miles and hundreds of campground nights. Sarah specializes in detailed park guides, accessibility information, and family-friendly outdoor planning. Her work focuses on helping first-time visitors feel confident and well-prepared for their state park adventures.

200+ state parks visited across 42 states | 8+ years of outdoor writing

Last updated: May 12, 2026

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