The Madrona Marsh Preserve, in the city of Torrance in the South Bay region of Southern California, is a seasonal wetland with vernal pools. The 43 acres (17 ha) was a former site of oil wells and is one of the few natural areas remaining within an urban landscape.
The Arthur R. Marshall Loxahatchee National Wildlife Refuge is a 145,188-acre (587.55 km2) wildlife sanctuary is located west of Boynton Beach, in Palm Beach County, Florida. It is also known as Water Conservation Area 1 (WCA-1). It includes the most northern remnant of the historic Everglades wetland ecosystem.
Don Edwards San Francisco Bay National Wildlife Refuge (DESFBNWR) is a United States National Wildlife Refuge located in the southern part of San Francisco Bay, California. Its headquarters and visitor center are in the Baylands district of Fremont, next to Coyote Hills Regional Park, in Alameda County. The visitor center is on Marshlands Rd, off Thornton Ave.
Ballona Wetlands Ecological Reserve is a protected area that once served as the natural estuary for neighboring Ballona Creek. The 577-acre (2.34 km2) site is located in Los Angeles County, California, just south of Marina del Rey. Ballona—the second-largest open space within the city limits of Los Angeles, behind Griffith Park—is owned by the state of California and managed by the California Department of Fish and Wildlife. The preserve is bisected generally east-west by the Ballona Creek channel and bordered by the 90 Marina freeway to the east.
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.
Puente Hills Landfill was the largest landfill in the United States, rising 500 feet high and covering 700 acres (2.8 km2). Originally opened in 1957 in a back canyon in the Puente Hills, the landfill was made to meet the demands of urbanization and waste-disposal east of Los Angeles. By the 1990s, the landfill became an artificial mountain visible around the San Gabriel Valley region. Puente Hills accepted four million tons of waste in 2005. As of October 31, 2013, its operating permit was terminated and it no longer accepts new refuse. The former landfill is in the process of becoming a natural habitat preservation area.
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.
Stege Marsh, also known as the South Richmond Marshes, is a tidal marshland wetlands area in Richmond, California in western Contra Costa County.
The Cosumnes River Preserve is a nature preserve of over 51,000 acres (210 km2) located 20 miles (30 km) south of Sacramento, in the US state of California. The preserve protects a Central Valley remnant that once contained one of the largest expanses of oak tree savanna, riparian oak forest and wetland habitat in North America. Agricultural development has changed the landscape from groves of oaks and tule marshes to productive farmlands.
Roberts Landing was a settlement in Alameda County, California, now incorporated into the town of San Leandro. It is located at the mouth of San Lorenzo Creek on San Francisco Bay just west of the community of San Lorenzo. In the 19th century, it had warehouses and a wharf, and was used by farmers to ship their produce to the city of San Francisco. From 1906 to 1964, it was the site of an explosives manufacturing plant operated by the Trojan Powder Company. Following the plant's closure, the site was decontaminated. After protracted discussions, part was made into a housing development while a larger part was made an open space that is now also called the San Leandro Shoreline Marshlands.
San Elijo Lagoon Ecological Reserve is one of the largest remaining coastal wetlands in San Diego County, California, United States.
Los Cerritos Wetlands is located in both Los Angeles County and Orange County in the cities of Long Beach, California, and Seal Beach, California. The San Gabriel River, historically and currently flows through the Los Cerritos Wetlands Complex.
The Gardena Willows Wetland Preserve occupies 13.6 acres (55,000 m2) of land owned by the City of Gardena, in Los Angeles County, California. The preserve is the last intact remnant of the former Dominguez Slough, an important vernal marsh and riparian forest with riparian zones that once covered as much as 400 acres (1,600,000 m2) of this area, known as the South Bay region. The preserve has 9.4 acres (38,000 m2) of wetland and 4.2 acres (17,000 m2) of upland. The wetlands have a natural depression where water remains for such a significant time that plants and animals not adapted to water and saturated soils cannot survive. The upland, which remains dry outside of the rainy season, supports plants which thrive with these drier conditions. The slough is a part of the Dominguez Watershed, 96% of which is now covered with concrete and man-made structures. Located on the traditional lands of the Tongva, it is believed that these indigenous people were able to commute by canoe around much of the area. Tongva villages were located throughout much of what is now Los Angeles and Orange Counties as well as three southern Channel Islands as distant as 60 miles (97 km) from the coast of Los Angeles County.
Pallikaranai Marsh is a freshwater marsh in the city of Chennai, India. It is situated adjacent to the Bay of Bengal, about 20 kilometres (12 mi) south of the city centre, and has a geographical area of 80 square kilometres (31 sq mi). Pallikaranai marshland is the only surviving wetland ecosystem of the city and is among the few and last remaining natural wetlands of South India. It is one of the 94 identified wetlands under National Wetland Conservation and Management Programme (NWCMP) operationalised by the Government of India in 1985–86 and one of the three in the state of Tamil Nadu, the other two being Point Calimere and Kazhuveli. It is also one of the prioritised wetlands of Tamil Nadu. The topography of the marsh is such that it always retains some storage, thus forming an aquatic ecosystem. A project on 'Inland Wetlands of India' commissioned by the Ministry of Environment and Forests, Government of India had prioritised Pallikaranai marsh as one of the most significant wetlands of the country. The marsh contains several rare or endangered and threatened species and acts as a forage and breeding ground for thousands of migratory birds from various places within and outside the country. The number of bird species sighted in the wetland is significantly higher than the number at Vedanthangal Bird Sanctuary.
A spreading ground is a water conservation facility that retains surface water long enough for it to percolate into the soil. Spreading grounds must be located where underlying soils are permeable and connected to a target aquifer. Locating them above silt or clay would prevent the surface water from reaching formations that store water.
Arroyo Conejo Open Space is a 302-acre (122 ha) open space reserve in the western Simi Hills in northern Newbury Park, Ventura County, California. Most of it is part of the 250-acre (100 ha) Arroyo Conejo Nature Preserve.
Bixby Slough was an ancient wetland in Los Angeles County, California.
Ken Malloy Harbor Regional Park, commonly Harbor Park, is a 231-acre (0.93 km2) Los Angeles municipal park featuring a golf course and 45-acre (0.18 km2) Machado Lake and freshwater wetland. Harbor Park is the third-largest park in Los Angeles city parks system after Griffith Park and Elysian Park.
Oxford Basin is a 10.7-acre (43,000 m2) constructed wetland and wildlife conservation area in the northwest corner of Marina del Rey, California, located between Washington Boulevard and Admiralty Way.
