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