Historical Shoreline of St. Lawrence Island, Alaska, from NOAA Maps

St. Lawrence Island, Alaska, is covered by a high-resolution historical shoreline dataset. The data were automated from shoreline maps produced by the NOAA National Ocean Service and its predecessors, based on imagery interpretation and field surveys. This resource is a member of a larger NOAA data collection and uses the NGS C-COAST attribution scheme.

Use Cases

• Analyze historical coastal erosion rates based on the high-resolution shoreline data.
• Create GIS base layers for environmental planning based on the derived shoreline maps.
• Translate shoreline data into S-57 hydrographic formats based on the C-COAST attribution scheme.
• Conduct change detection studies based on the historical imagery and survey sources.

Strengths

• Data are derived from authoritative NOAA National Ocean Service maps.
• Shoreline is described as high-resolution and accurate for GIS use.
• Attribution uses the structured C-COAST scheme influenced by the S-57 standard.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data formats are limited to PDF and HTML, which may require conversion for analysis.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Automated from shoreline maps based on office interpretation of imagery and/or field surveys.

Time Range

Historical, but specific range is not provided.

Freshness

Last updated 2026-03-13 21:04:59.708638; freshness should be verified.

Geography

St. Lawrence Island, Alaska, USA.