Contact Number

  • (707) 677-3570

Park Accessibility Information

Park Hours

  • Call Sue-meg State Park

Park Activities

Except for service animals, dogs not allowed on trails.
Beach Area
Nature & Wildlife Viewing
Hiking Trails

Park Facilities



Park Directions

Get directions through Google Maps

Harry A. Merlo SRA is situated along the south and east shores of Big Lagoon, between Patricks Point SP to the south and Humboldt Lagoons SP to the north, in Humboldt County. From the town of Trinidad, drive north about 7 miles on Hwy 101 then turn left at Big Lagoon Rd and follow the signs. Parking and beach access is located within Big Lagoon County Park.

Photo:  View of the lagoon and surrounding area at Harry A. Merlo SRAAdjacent to Humboldt Lagoons State Park, this area is a popular place for visitors who like to fish. The use of small boats is allowed. The boat speed limit is 5 mph.

Location/ Directions
The park is 32 miles north of Eureka on U.S. 101.

Seasons/Climate/Recommended clothing
The weather can be changeable; layered clothing is recommended.