Other Wetland Habitats
Other wetland and aquatic habitat types include estuaries, freshwater/open water, and vernal pools. All wetland habitats are considered sensitive.
Estuarine habitat consists of a semi-enclosed body of water that has a free connection with the open ocean and within which seawater is measurably diluted with freshwater derived from land drainage. Estuarine species include pickleweed, alkali heath, estuary sea blite, and salty-Susan.
This aquatic habitat lacks a vascular vegetation, and includes lakes, ponds and reservoirs. The area surrounding open water is almost always characterized by freshwater marsh, salt marsh, or riparian habitats. Excluding the three major coastal lagoons, the largest open water area in the city is Lake Calavera.
Vernal pools are a highly restricted, unique wetland habitat type that contains high numbers of endangered, sensitive, and endemic plant and animal species, including San Diego button-celery, little mousetail, spikerush, spreading navarretia, and California Orcutt grass. This type occurs in several scattered locations throughout the city.