Mission Bay was a lagoon nestled inside of a +500 acre salt marsh and was occupied by year-round tidal waters.
[2] This area was a natural habitat and refuge for large waterfowl populations that included ducks, geese, herons, egrets, ospreys, and gulls.
From the 1850s the area was used for shipbuilding and repair, butchery and meat production, and oyster and clam fishing.
[4] Beginning in the mid-1800s, in attempts to make this area suitable for building, Mission Bay, like most of the shoreline of the city of San Francisco, was used as a convenient place to deposit refuse from building projects and debris from the 1906 earthquake.
With the addition of the railroad, Mission Bay became the home to shipyards, canneries, a sugar refinery, and various warehouses.