Climate & EnvironmentLive
Water Stress Index
Assess water stress at any location combining baseline stress, drought risk, groundwater decline and seasonal variability into a single index.
How it works
1
Pin a watershed
Select any watershed, city or point of interest.
2
Choose stressors
Pick which stressors to include in the composite index.
3
Compute WSI
Deterministic index 0-100 with per-stressor breakdown.
4
Share findings
Export or share a live link — recipients view free.
Run analysis
Pick a location
Select stressors
Who uses this tool
Operations & supply chain
Rank facilities by water risk and set withdrawal reduction targets.
NbS developers
Prioritize watersheds where restoration delivers water co-benefits.
Investors
Screen portfolios under TCFD/TNFD water-risk disclosures.
Data sources & methodology
Water Stress Index combines WRI Aqueduct 4.0 baseline stress, Copernicus GDO drought indicators, GRACE groundwater trends and CHIRPS rainfall variability into a normalized 0-100 score.
WRI Aqueduct 4.0
Global baseline water stress at HydroBASINS level.
Copernicus GDO
European and global drought observatories, CDI indicator.
NASA GRACE-FO
Groundwater storage anomalies from satellite gravimetry.
WRICopernicusNASACEO Water Mandate
Frequently asked questions
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