ARR Data Hub
Gov-Public
The official portal for Australian Rainfall & Runoff design inputs — losses, temporal patterns and preburst.
21 tools · Topic
Rainfall Data Access & Processing Tools
Design rainfall, gauge records, radar and gridded reanalysis — precipitation data comes in many forms and every one has its own access quirks. The list includes clients for the major archives, satellite and reanalysis datasets, radar processing, and rainfall generation and disaggregation tools.
CHIRPS
Free
Gauge-blended satellite rainfall at 0.05°, daily, since 1981 — the standard for drainage work in data-sparse regions.
Caravan
Open Source
The open global large-sample hydrology dataset — thousands of catchments with forcing, attributes and streamflow.
Delta Hydro Studio
FreemiumVerified
Browser-based hydrology and hydraulics calculators for practising engineers — no install, report-ready output.
EPA SSOAP Toolbox
Gov-Public
EPA's toolbox for sanitary sewer overflow planning — RDII analysis with the SWMM engine underneath.
ERA5 / ERA5-Land
Free
ECMWF's hourly global reanalysis — the default gap-free climate forcing record for ungauged catchments worldwide.
GPM IMERG
Gov-Public
NASA's 30-minute, 0.1° global precipitation record — the highest time resolution of any satellite rainfall product.
HyRiver
Open Source
A Python software stack for US hydrology data: NHD+ networks, gauges, DEMs, soils and climate via one API family.
MERRA-2
Gov-Public
NASA's satellite-era atmospheric reanalysis — hourly global fields from 1980, the default alternative to ERA5.
MSWEP
Freemium
Precipitation that optimally blends gauges, satellites and reanalysis at every grid cell — 3-hourly, 0.1°, global.
NEOPRENE
Open Source
Neyman-Scott stochastic rainfall generation in Python — synthetic series and disaggregation, single or multi-site.
NOAA Atlas 14 (PFDS)
Gov-Public
The US precipitation-frequency standard — point rainfall depths for any duration and return period, free.
NOAA CFSR / CFSv2
Gov-Public
NCEP's coupled atmosphere-ocean-land reanalysis, sub-daily, 1979–present — strong where ocean coupling matters.
NOAA Weather and Climate Toolkit
Gov-Public
Free viewer and exporter for NEXRAD radar, satellite and climate data — out to GeoTIFF, Shapefile and NetCDF.
NetSTORM
Free
CDM Smith's free rainfall statistics and STORM-method screening model — IDF analysis, disaggregation, CSO planning.
PERSIANN-CDR
Free
A neural-network satellite rainfall climate data record, daily, 0.25°, purpose-built for long-term trend studies.
RainyDay
Open Source
Stochastic storm transposition in Python — probabilistic extreme rainfall scenarios from remote-sensing data.
StormHub
Open Source
Dewberry's open tool for building STAC catalogs of storms and gauge data — inputs for stochastic storm transposition.
Free web tool for building synthetic design-storm patterns — 560+ temporal patterns, exportable to SWMM and HMS.
Programmatic access to ERA5 and the Copernicus Climate Data Store — the world's reanalysis workhorse.
wradlib
Open Source
The open library for weather-radar rainfall processing — from raw volumes to engineering-ready rainfall fields.