| Mowry Slough | |
|---|---|
IUCN category IV (habitat/species management area) | |
 The Mowry Slough (lower center) where it meanders between salt ponds in the south San Francisco Bay, including theDon Edwards San Francisco Bay National Wildlife Refuge and theDumbarton Bridge, with Peninsula cities in the background | |
  Mowry Slough  Mowry Slough  Mowry Slough | |
| Location | Fremont, California |
| Coordinates | 37°29′01″N122°01′11″W / 37.4835499°N 122.0196838°W /37.4835499; -122.0196838[1] |
| Designated | 1972; 53 years ago (1972) |
| Governing body | Don Edwards San Francisco Bay National Wildlife Refuge |
Mowry Slough[1] is a 5.8-mile-long (9.3 km)[2]slough inDon Edwards San Francisco Bay National Wildlife Refuge and is the primary breeding ground for San Francisco Bayharbor seals. It is situated among thesalt marshes andsalt evaporation ponds in the city ofFremont.[3][4]
Historically one of the deepest sloughs in South San Francisco Bay, Mowry Slough meanders through the tidal marsh bounded by colorful salt ponds. It is named for Origin Mowry who, in the mid-1800s, owned over 400 acres of farmland in the area and used the slough to transport goods and people by boat. Mowry Slough is located in the Don Edwards San Francisco Bay National Wildlife Refuge and is accessible only by boat. Being so isolated, it is an ideal home for harbor seals, which are easily disturbed by human activities. A healthy population of harbor seals thrives there, raising their young and sunbathing on the banks of the salt marsh.
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