InfraFlood-NC: Infrastructure-Specific Flood Annotations for North Carolina

Six urban areas in North Carolina impacted by Hurricanes Matthew and Florence are covered by this dataset. It provides binary flood extent annotations paired with building footprints and road networks, derived from high-resolution (1.5 cm to 25 cm) imagery. The data is structured into 10 spatial divisions and formatted for both deep learning model training and traditional GIS analysis.

Use Cases

• Training multimodal deep learning models for flood detection based on GeoJSON-formatted annotations and imagery.
• Conducting GIS-based risk assessment for critical infrastructure using integrated Homeland Infrastructure Foundation-Level Data (HIFLD) classifications.
• Analyzing maximum inundation presence per structure using zonal statistics calculated from binary flood masks.
• Comparing flood impacts across different urban areas and hurricane events using the harmonized Wet/Dry framework.

Strengths

• Provides high-resolution annotations derived from imagery with a ground resolution between 1.5 cm and 25 cm.
• Includes infrastructure-specific data via spatial joins with critical facility classifications from HIFLD.
• Offers data in multiple formats (GeoJSON and Shapefile) tailored for different analytical workflows.
• Covers a specific, impactful event set across six distinct urban areas.

Limitations

• The exact number of data points (rows/features) is not specified in the provided metadata.
• Column names and a detailed data dictionary are not provided, limiting immediate understanding of attribute fields.
• The temporal coverage is implied by hurricane events but specific observation dates are not listed.

Provenance

Source

Derived from the high-resolution DeepFlood dataset, with building footprints, road networks, and HIFLD data.

Collection Method

Uses raster reclassification to create binary flood masks, zonal statistics for per-structure inundation, and spatial joins for infrastructure classification.

Time Range

Period of Hurricanes Matthew (2016) and Florence (2018).

Freshness

Last updated on 2026-03-19.

Geography

Six urban areas in North Carolina, USA.