Navarro River Redwoods State Park is a state park in Mendocino County, California, consisting of 660 acres (2.7 km2) of second-growth redwood forest in a narrow stretch 11 miles (18 km) long on both banks of the Navarro River, from the town of Navarro to the river's confluence with the Pacific Ocean.
The park may be reached via State Route 128, which winds through the park along the north bank of the river and has many turnouts, allowing travelers to stop for day use activities such as picnics and short walks through the forest. Fishing, swimming, kayaking, and canoeing are also possible.
Two developed campgrounds are part of the park. The Navarro Beach Campground is on the beach to the south of the river mouth; it has ten campsites, picnic tables, fire grills, and pit toilets, but no shade or drinking water. The Paul M. Dimmick Campground is inland, in a second-growth redwood grove near the river; it has 25 campsites, picnic tables, fire grills, pit toilets, and drinking water, but it may be flooded in the winter.
The river supports coho salmon, steelhead trout, and river otters; great blue herons, kingfishers, loons, and osprey nest along its banks. Raccoons and black-tailed deer live in the forest, and gray whales and harbor seals may sometimes be seen from the beach on the Pacific Ocean at the mouth of the river.
Because the region now covered by the park was heavily logged in the 19th century, only second-growth redwood trees remain. However, two groves of old-growth redwoods may be seen in nearby Hendy Woods State Park, upriver a few miles southeast on Route 128.