After World War II, California experienced another development boom, especially throughout the Bay Area. With population rising by the millions and space at a premium, developers targeted the 1,600 square miles of the bay itself, proposing a host of fill projects that would turn its waters into habitable land. In response, citizen activists inundated city council meetings and demanded that local officials protect the region’s famed waterfront from such development schemes. Activists rallied under the banner of the Save San Francisco Bay Association. By 1965, the association’s advocacy led to the creation of the San Francisco Bay Conservation and Development Commission, or BCDC, a new state agency charged with regulating all development on the bay. The creation of BCDC marked two important steps in the evolution of Bay Area environmentalism. First, it gave environmental considerations a permanent place in state government. Second, the agency aimed to strike a balance between economic development and environmental conservation, as reflected in its name. Ultimately, BCDC would establish the blueprint for other regulatory agencies, such as the Tahoe Regional Planning Agency, the Delta Stewardship Council, and the California Coastal Commission.


Environmental Conservation strives to protect the natural resources of an area by regulating human impacts to ensure the sustainability of those resources into the future. Unlike preservation, which prohibits various human activities in a place, conservation seeks a balance between the use and safeguarding of resources. For example, a city park conserves open space while also designating areas for human activities, such as picnic tables, playgrounds, sports fields, or music venues. In the United States, conservation first arose in forestry, where science and resource management was applied to the nation’s forests to balance logging and the health of forest lands and wildlife. By the mid-1900s, the rising human impacts on natural resources furthered public demand for environmental conservation, especially in places like California where residents increasingly sought to balance urban expansion and industrial development with protection of resources like the San Francisco Bay. After the 1960s, these demands spread nationwide in a social movement for environmental action, which resulted in the establishment of Earth Day and a host of new environmental laws.