Cordelia Slough is a 10.8-mile-long (17.4 km)[1] tidal watercourse which discharges to the Suisun Slough, which in turn empties into Grizzly Bay in Solano County, California.[2] The Suisun Slough, fed by the Green Valley Creek and Red Top Creek, provides a productive habitat for a diversity of aquatic flora and fauna. In particular steelhead migrate up Cordelia Slough to spawn in its two tributaries.[3]
Cordelia Bay is known for its species biodiversity and also for prevalence of endangered species such as Sacramento splittail, Pogonichthys macrolepidotus and the Salt Marsh Harvest Mouse.[4]
Some areas which drain into Cordelia Slough from the north are subject to development pressure from the expanding population of the San Francisco Bay Area; correspondingly, there are increasing risks of adverse water quality due to urban surface runoff from such new development.[5] Cordelia Slough is considered a subarea of the Grizzly Island Wildlife Area, which is a State of California designated Wildlife Area.[6][7]
38°08′09″N 122°04′58″W / 38.135751°N 122.082744°W