Google Earth Engine
Freemium
Planetary-scale geospatial analysis in the cloud — the data catalogue and compute behind modern water remote sensing.
Geospatial & Hydro-GISActiveGoogle Earth EngineRemote Sensing
6 tools · Topic
Drought Analysis & Index Tools
SPI, SPEI, PDSI and their many cousins — drought indices quantify deficit for triggers, monitoring and planning. Indexed here are the packages that compute the standard indices correctly, plus monitoring dashboards and data feeds.
SPEI (R package)
Open Source
The reference R implementation of SPEI and SPI from the index's own authors.
Climate & Change AnalysisStableDrought AnalysisR Hydrology
USGS Hydrologic Toolbox
Gov-Public
USGS's merged surface-water and groundwater statistics program — baseflow separation, flow duration, low flows.
Hydrology & Catchment AnalysisActiveStreamflow DataFlood Frequency Analysis
VIC
Open Source
The Variable Infiltration Capacity model — macroscale land-surface hydrology for big basins and climate studies.
Hydrology & Catchment AnalysisStableSnow HydrologyClimate Projections
climate_indices
Open Source
Reference Python implementations of SPI, SPEI and Palmer indices for drought monitoring.
Climate & Change AnalysisStableDrought AnalysisPython Hydrology
xclim
Open Source
Climate indices and bias adjustment on xarray — the operational-grade library for climate-data engineering.
Climate & Change AnalysisActiveClimate ProjectionsDrought Analysis