Rainfall intensity-duration-frequency curves for Brazil: a large national database

Version 2: Data updated in 04-2026.
Version 1 files were deleted.
New equations added.

Compilation of rainfall IDF curves for 6,550 rainfall gauges in Brazil. Includes curves established using: a) sub-daily rainfall data (Standard), and, b) daily rainfall maximum depth (Disaggregation).

Contents of each folder:

1. XLSX file - datasheet containing curves from Standard method and Disaggregation method, a Reference list's plan, and a Description's plan.
Version 2: Standard and Disaggregation equations were joined at the same "plan". Columns added: type, years_number, low_duration_minutes, high_duration_minutes, and observation. See description's plan for more information.

2. GIS vector file in geopackage format:
Version 2: includes on vector files with all Standard and Disaggregation equations.

3. GIS vector files in shapefile format:
Version 2: one shapefiles compacted as RAR file with all Standard and Disaggregation equations.

4. GIS vector files in geojson format: one files with all Standard and Disaggregation equations.
Version 2: one files with all Standard and Disaggregation equations.

Technical Description:
Geographic Coordinate System: WGS_1984
Datum: WGS_1984
Unit: Degree