WMO says 2025 river flows among driest in 35 years
WMO’s annual global water report says river discharge in 2025 was among the lowest in more than 35 years.
Event / data period: 2025
Published: · Updated:
WMO’s State of Global Water Resources 2025 report, released on 17 September, says river discharge worldwide in 2025 was among the driest in more than 35 years. It places this finding alongside the long-term decline in land freshwater storage and glacier retreat.
The agency said the past seven years had abnormal river flows, land-surface water storage declined over the past decade, and glaciers in all regions lost mass for a fourth consecutive year. It also noted improved water data coverage but continuing gaps in affected areas.
Data
Source-reported figure
Measurement or forecast published by the official source.
- Comparison period for river discharge ranking
- ≥35 years
- 2025 · Estimate
Methodology
Stores the source-reported value and period without conversion or an independent forecast.
Updated:
Subjects and places
Subject proposals
- Weather statisticSuggested
- Subject suggested from the title or summary: river flowswmo.int ↗
- EnvironmentSuggested
- Preserved editorial category/topic; broad candidate onlywmo.int ↗