Check out some fantastic images taken by local photographers, Ron LeValley, Andrea Pickart & David F. Thomson
The visitor center is a great place to stop and gather information before taking advantage of all of Humboldt Bay's visitor activities.
Learn More About the Visitor Center
Ma-le'l and Lanphere Dunes
Experience a diverse and dynamic coastal landscape of forests and salt marshes, sand dunes and beaches.
Humboldt Bay saltmarsh habitat has decreased by 90 percent. Fortunately, the Refuge is making it a priority to restore this unique habitat.
Spartina Invasion and Management
Humboldt Bay freshwater wetlands attract hundreds of species of migratory and resident birds.
The proposed removal of invasive non-native plant species and the subsequent reintroduction of native plant species is a demonstration sea level rise adaptation project that will test the premise, based on three years of monitoring at Humboldt Bay National Wildlife Refuge. that the replacement of European beachgrass by particular configurations of native species (ie. species composition and topographic position) will facilitate the natural migration of the foredune inland and upward in elevation as sea level rises.View the complete Final EA and FONSI
About the Complex
The coastal habitats conserved at Humboldt Bay National Wildlife Refuge and Castle Rock National Wildlife Refuge are some of the most beautiful and biologically rich places in the world.
Humboldt Bay is managed as part of the Humboldt Bay National Wildlife Refuge Complex.
Learn more about the complex
About the NWRS
The National Wildlife Refuge System, within the U.S. Fish and Wildlife Service, manages a national network of lands and waters set aside to conserve America’s fish, wildlife, and plants.
Learn more about the NWRS
Explore the Ma-le'l Dunes in the north bay and the Shorebird Loop Trail at Salmon Creek in the south bay using your smartphone with these free, fun, game-based nature scavenger hunt apps!Discover Nature Apps
Migratory Birds descend upon Humboldt Bay year round as they migrate from chilly northern breeding grounds to warmer wintering areas. These birds use the productive Refuge habitats ranging from freshwater wetlands to sandy forested dunes. Learn More About Humboldt's Migrant Birds
The Refuge’s Lanphere Dunes Unit is home to the first dune restoration project on the west coast. Restoration began in the 1980s with early experiments to control invasive European beachgrass (Ammophila arenaria). By the early 1990s The Nature Conservancy (the past owner) began a large-scale mechanical eradication project that took 6 years to complete. This project became a template for dune restoration projects throughout the west coast and beyond. Most importantly, it demonstrated that by removing over-stabilizing beachgrass and other invasive plants, essential dune processes were restored, fostering the recovery of the ecosystem. Since that time, dune restoration has continued to evolve and expand. On our local dunes, over 7 miles of coastline have been restored in Humboldt and Del Norte counties, and plans are in the works that will more than double this number.Click Here for More Details About Humboldt Dune Resoration
Historically the Humboldt Bay area had approximately 9,000 acres of valuable saltmarsh habitat. Because of levee construction in the early 1900's, which inhibited saltwater intrusion into historic marshes, salt marshes began to disappear, and now only 900 acres remain. The remaining acres are now being invaded by a robust grass known as Spartina. If left untreated, Spartina can take over an entire saltmarsh, completely eradicating all native species and becoming a monoculture. Through restoration work, the Refuge is combating the Spartina invasion to protect Humboldt's remaining saltmarsh habitat.Learn How the Refuge is Controlling and Reversing Spartina Invasion
The leafcutter bee (Megachile wheeleri) is one of the of specialized, solitary, ground-nesting bees that are crucial to the survival of our native dune mat community. The leafcutter bee, shown here pollinating dune goldenrod, cuts semi-circular pieces from goldenrod leaves and uses them to construct its nest cell. Native bees are gaining increased attention as pollinators due to the decline of the imported honey bee (Apis mellifera) through colony collapse disorder. Photo courtesy of Andrea Pickart.
Page Photo Credits All photos courtesy of USFWS unless otherwise noted.
Last Updated: Oct 04, 2015