Black_Diamond
The A1, A2W, AB1, A2E, AB2, A3N, and A3W ponds are currently managed ponds. They were formally salt production ponds that are being restored to wetlands and marshes.

The following changeset has updated these ponds to be managed wetlands.
https://www.openstreetmap.org/changeset/140068853

If you are interested in the South Bay Salt Pond Restoration project, please refer to these resources.
https://www.southbayrestoration.org/page/maps
https://www.southbayrestoration.org/pond-complexes/alviso