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

Version 3: Data updated in 05-2026.
Version 1 and Version 2 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:

- IDF_Curves_Brazil_v3.xlsx - datasheet containing curves from Standard method and Disaggregation method, a Reference list's plan, and a Description's plan.
Since Version 2, the 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.

- IDF_Curves_Brazil_v3.gpkg: GIS vector file in geopackage format containing the same information of the mains plan of "IDF_Curves_Brazil_v3.xlsx"

- Reference_List.xlsx: Separeted file with all the bibliographic reference list.

Technical Description:
Geographic Coordinate System: WGS_1984
Datum: WGS_1984
EPSG: 4326
Unit: Degree