New York State Future Coastal Floodplain Extent Under Sea Level Rise Scenarios

New York State's tidally influenced shoreline, excluding New York City, is modeled for future floodplain extent. The dataset includes 32 combinations of eight sea level rise scenarios (0 to 72 inches) and four annual chance flood probabilities. This modeling effort was completed in 2016 by the New York State Energy Research and Development Authority (NYSERDA).

Use Cases

• Modeling property exposure to future coastal flooding based on sea level rise scenarios.
• Assessing long-term infrastructure risk based on flood recurrence intervals (10-year to 500-year events).
• Visualizing potential inundation extents for specific counties using LiDAR-based topography.
• Comparing floodplain changes across different sea level rise increments (6- to 12-inch steps).

Strengths

• Includes 32 distinct scenario combinations of sea level rise and flood probability.
• Covers 12 specific New York State counties along the tidally influenced shoreline.
• Based on high-resolution LiDAR digital elevation models and FEMA flood study data.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• The analysis does not account for changes in future storm climatology or dynamic coastal processes.
• Last updated 2026-04-04 23:07:43.705354; freshness should be verified.

Provenance

Source

New York State Energy Research and Development Authority (NYSERDA)

Collection Method

Future flood elevations were developed by applying sea level rise scenarios to FEMA baseline flood elevations and intersecting with LiDAR topography.

Time Range

Modeling completed in 2016; projections are for future scenarios.

Freshness

Modeling completed in 2016; data last updated on platform in 2026.

Geography

Tidally influenced shoreline of New York State, covering 12 counties (Albany, Columbia, Dutchess, Greene, Orange, Nassau, Putnam, Rensselaer, Rockland, Suffolk, Ulster, Westchester), excluding New York City.