Willapa Bay is a bay located on the southwest Pacific coast of Washington state in the United States. The Long Beach Peninsula separates Willapa Bay from the greater expanse of the Pacific Ocean. With over 120 square miles (310 km2) of surface area Willapa Bay is the second-largest riverine estuary on the Pacific coast of the continental United States. Early settlers called the bay Shoalwater Bay and this name is found on old maps and charts of the region.
The Oregon Coast is a coastal region of the U.S. state of Oregon. It is bordered by the Pacific Ocean to its west and the Oregon Coast Range to the east, and stretches approximately 362 miles (583 km) from the California state border in the south to the Columbia River in the north. The region is not a specific geological, environmental, or political entity, and includes the Columbia River Estuary.
Zmudowski State Beach is located on Monterey Bay, in Moss Landing, Monterey County, northern California.
Coos Bay is an estuary where the Coos River enters the Pacific Ocean, the estuary is approximately 12 miles long and up to two miles wide. It is the largest estuary completely within Oregon state lines. The Coos Bay watershed covers an area of about 600 square miles and is located in northern Coos County, Oregon, in the United States. The Coos River, which begins in the Oregon Coast Range, enters the bay from the east. From Coos River, the bay forms a sharp loop northward before arching back to the south and out to the Pacific Ocean. Haynes Inlet enters the top of this loop. South Slough branches off from the bay directly before its entrance into the Pacific Ocean. The bay was formed when sea levels rose over 20,000 years ago at the end of the Last Glacial Maximum, flooding the mouth of the Coos River. Coos Bay is Oregon's most important coastal industrial center and international shipping port, with close ties to San Francisco, the Columbia River, Puget Sound and other major ports of the Pacific rim.
The Yaquina River is a stream, 59 miles (95 km) long, on the Pacific coast of the U.S. state of Oregon. It drains an area of the Central Oregon Coast Range west of the Willamette Valley near Newport.
Humboldt Bay is a natural bay and a multi-basin, bar-built coastal lagoon located on the rugged North Coast of California, entirely within Humboldt County, United States. It is the largest protected body of water on the West Coast between San Francisco Bay and Puget Sound, the second-largest enclosed bay in California, and the largest port between San Francisco and Coos Bay, Oregon. The largest city adjoining the bay is Eureka, the regional center and county seat of Humboldt County, followed by the city of Arcata. These primary cities, together with adjoining unincorporated communities and several small towns, comprise a Humboldt Bay Area with a total population of nearly 80,000 people. This comprises nearly 60% of the population of Humboldt County. The bay is home to more than 100 plant species, 300 invertebrate species, 100 fish species, and 200 bird species. In addition, the bay and its complex system of marshes and grasses support hundreds of thousands of migrating and local shore birds. Commercially, this second-largest estuary in California is the site of the largest oyster production operations on the West Coast, producing more than half of all oysters farmed in California.
Bair Island is a marsh area in Redwood City, California, covering 3,000 acres (1,200 ha), and includes three islands: Inner, Middle and Outer islands. Bair Island is part of the larger Don Edwards San Francisco Bay National Wildlife Refuge. It is surrounded by the Steinberger slough to the northwest and Redwood Creek to the southeast.
Located in northern California, the Suisun Marsh has been referred to as the largest brackish water marsh on west coast of the United States of America. The marsh land is part of a tidal estuary, and subject to tidal ebb and flood. The marsh is home to many species of birds and other wildlife, and is formed by the confluence of the Sacramento and San Joaquin rivers between Martinez and Suisun City, California and several other smaller, local watersheds. Adjacent to Suisun Bay, the marsh is immediately west of the legally defined Sacramento-San Joaquin Delta as well as part of the San Francisco Bay estuary.
Yaquina Bay is a coastal estuarine community found in Newport, Oregon. Yaquina Bay is a semi-enclosed body of water, approximately 8 km2 (3.2 mi2) in area, with free connection to the Pacific Ocean, but also diluted with freshwater from the Yaquina River land drainage. The Bay is traversed by the Yaquina Bay Bridge.
Lake River is a tributary, about 11 miles (18 km) long, of the Columbia River in the U.S. state of Washington. It flows north from Vancouver Lake in Vancouver to meet the larger river near Ridgefield and the northern tip of Bachelor Island. The Wilkes Expedition of 1841 referred to Lake River as Calipaya Inlet.
Seal Slough, also known as Marina Lagoon, is a narrow winding tidal channel through a tidal marsh in San Mateo and Foster City, California. This slough has been the object of a wetland restoration project in recent years to enhance habitat value. Dredging has been carried out in Seal Slough since at least 1954. When the original sewage treatment plant for the city of San Mateo was constructed in 1935, its discharge was directed to Seal Slough.
Elkhorn Slough is a 7-mile-long (11 km) tidal slough and estuary on Monterey Bay in Monterey County, California. It is California's second largest estuary and the United States' first estuarine sanctuary. The community of Moss Landing and the Moss Landing Power Plant are located at the mouth of the slough on the bay. The Elkhorn Slough National Estuarine Research Reserve and Elkhorn Slough State Marine Conservation Area (SMCA) are in the area.
The Columbia Slough is a narrow waterway, about 19 miles (31 km) long, in the floodplain of the Columbia River in the U.S. state of Oregon. From its source in the Portland suburb of Fairview, the Columbia Slough meanders west through Gresham and Portland to the Willamette River, about 1 mile (1.6 km) from the Willamette's confluence with the Columbia. It is a remnant of the historic wetlands between the mouths of the Sandy River to the east and the Willamette River to the west. Levees surround much of the main slough as well as many side sloughs, detached sloughs, and nearby lakes. Drainage district employees control water flows with pumps and floodgates. Tidal fluctuations cause reverse flow on the lower slough.
Woodard Bay Natural Resources Conservation Area is a natural reserve in Olympia, Washington, protected under the Washington Natural Areas Program. Once an important processing facility for the logging industry, it has been designated as the Weyerhaeuser South Bay Log Dump Rural Historic Landscape. Today the area is a renowned sanctuary for a variety of birds, harbor seals, river otters, bald eagles, and a colony of bats, as well as serving as an important great blue heron rookery. A recent conservation program in the area between the State of Washington and the Nature Conservancy is the first of its kind in the country.
The San Francisco Bay National Estuarine Research Reserve is one of 30 reserves established as part of the United States National Estuarine Research Reserve System. The reserve is used to promote San Francisco Bay wetlands and estuary research, education, and stewardship.
The Elochoman River is a tributary of the Columbia River, in the U.S. state of Washington. It is about 15 miles (24 km) long.
The Bone River is a short river in the U.S. state of Washington. It is about 6 miles (9.7 km) long.
The Palix River is a stream in the U.S. state of Washington. Its tributaries include three forks, North, Middle, and South Fork Palix River, as well as the Canon River. The river's length, including the Canon River, its longest tributary, is approximately 14 miles (23 km).
The Cedar River is a short stream flowing into the north end of Willapa Bay in the U.S. state of Washington.
The Raft River is a stream located entirely within the Quinault Indian Reservation in Grays Harbor County, on the Olympic Peninsula, in the U.S. state of Washington. The river and its tributaries flow west from the Olympic Mountains and empty into the Pacific Ocean. It is situated a few miles north of the Quinault River and a few miles south of the Queets River.
