Historical Shoreline of Berkley to Daly City, CA, 1940

NOAA National Ocean Service provides a high-resolution historical shoreline GIS data layer for Berkley to Daly City, California. The data were automated from shoreline maps based on office interpretation of imagery and/or field surveys. The attribution follows the NGS-developed C-COAST scheme, influenced by the IHO S-57 standard.

Use Cases

• Modeling coastal erosion rates based on historical shoreline positions.
• Analyzing land-use change in coastal zones based on derived shoreline maps.
• Validating modern shoreline datasets against historical baselines.
• Incorporating into GIS for historical coastal hazard assessment.

Strengths

• Data are described as high-resolution and accurate for GIS use.
• Shoreline maps were produced by NOAA National Ocean Service, a federal authority.
• Attribution follows a structured scheme (C-COAST) influenced by an international standard (IHO S-57).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and file size are unknown, which may limit suitability assessment.
• Data are derived from office interpretation, which may introduce subjective bias.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Automated from shoreline maps produced by NOAA NOS based on interpretation of imagery and/or field surveys.

Time Range

1940 (inferred from dataset code 'CA1940A')

Freshness

Last updated 2026-03-13 21:16:54.964384; freshness should be verified.

Geography

Berkley to Daly City, California, USA