Big River
Monday, January 15th, 2007Big River now belongs to the people of California. Over $26 million in public and private funds was raised by the tireless work and dedication of the folks at Mendocino Land Trust and Michael Lebeau of the Trust for Wildland Communities. Big River’s 7,400 acres of watershed and estuary was rated by the U.S. Fish & Wildlife Service as one of the top four conservation projects under its jurisdication. Big River’s watershed comprises some of the best timber ground on the planet. The purchase of Big River presented an unusual opportunity to link coastal habitats to inland habitats on a landscape scale, greatly enhancing conservation efforts on adjacent state lands through cooperative management, support of scientific research, and by facilitating management of the entire acreage as an ecological system.
The Big River, which flows into the ocean just south of Mendocino, wasn’t named for the breadth of its channel but for the size of the redwoods that once grew along its bank. In 2002 the 7,334 acre Big River Unit was added to Mendocino Headlands State Park. The addition of the Big River Unit to the California State Park system creates a 7,400 acre wildlife corrider which links diverse coastal and inland habitats into the largest piece of connected public land entirely within Mendocino County.
Reaching from the river’s mouth to 800 foot elevation inland ridges, the Big River wetland property includes a wide range of habitats. State lands surround it on three sides. On the north it adjoins Jackson Demonstration State Forest and Mendocino Woodlands State Park.
Big River is protected and is the only major undeveloped navigable estuary remaining in Northern California. Unlike the undeveloped portions of other rivers Big River is accessible. Big River is a place of gentle tidal flows, mist-laden redwoods, and tucked-away marshes. It is home to an amazing array of wildlife, and it has a history as a resource and a respite for humans as well.
The property’s unique natural resources include:
- 1,500 acres of wetlands, including brackish, freshwater, saltwater, and fresh emergent marshes, the 8.3 mile long estuary, and associated riparian habitats.
- 27 endangered, threatened, or species of concern.
- 60,000 acres of connected wildlife habitat between this and adjacent public land, and over 100 miles of joined trails.
- 50 miles of Big River and its tributaries, home to Dungeness and shore crab, freshwater mussels, ghost shrimp, river otter, beaver, harbor seals, and over 22 fish species including coho and steelhead salmon, bocaccio, starry flounder, Pacific halibut, Pacific herring, eulachon, buffalo and prickly sculpin, and 7 species of surfperch.
- Over 130 bird species recorded to date, including Osprey, Northern “Spotted Owl, Golden Eagle, Yellow Warbler, Purple Martin, Vaux’s Swift, Yellow-breasted Chat, and Olive-sided and Pacific-slope Flycatchers.
- It is the longest undeveloped estuary in northern California.
- Significant, untapped archeological resources throughout the property.
- High diversity of plant communities including Northern Coastal Salt Marsh, Coastal Brackish Marsh, mudflats, coastal and valley freshwater marsh, costal scrub, riparian forests, Coastal Redwood Forest, Bishop Pine Forest, Grand Fir Forest, Mendocino Pygmy Cypress Forest, Coastal Coniferous Forest, and mixed hardwood/conifer forest, as well as five aquatic plant associations.
- 27 sensitive plant species, identified on Big River property quadrangles, and which are likely to be positively identified in future surveys.
- At least 32 mammals including river otter, black bear, beaver, mountain lion, bobcat, mink, ring-tailed cat, long and short tailed weasel, little brown bat, gray fox, harbor seal, and the red tree vole.
- 60 acre Laguna Marsh, and unusual inland and extensive fresh-emergent wetland representing one of the most productive habitats on earth.







