Hydrology

Water Resources Water Levels Water Cycle Water Management Climate Change River Systems Water Storage Climate Science Groundwater Meteorology

Aerial Surveys Find 90% Snowpack Loss in Arizona’s White Mountains

New aerial lidar maps guide Phoenix water managers on timing decisions.

Pakistan Reaffirms Indus Treaty as Senate Flags Dam Funding Gap and Flood Risks

Utah Snowpack Nears Record Low as Cox Urges Prayer, Conservation

Cemaden Warns São Paulo Reservoirs Unlikely to Recover This Year as Levels Sink to Post‑2014 Lows

Atmospheric Rivers Refill California Reservoirs, Lifting Shasta Near 80% Capacity

Christmas Storms Lift Catalonia Reservoirs to 82%, Prompting Precautionary Releases

Satellite Data Show Europe’s Freshwater Stores Shrinking, With South and East Hit Hardest

Cutzamala Storage Dips to 96.3% as Rainy Season Closes

Prakasam Barrage Nears Six-Lakh-Cusec Discharge as Somasila Opens Five Gates After Montha Rains

Netherlands Publishes Above-Regional Flood Maps for ARK-NZK Showing Weeks-Long Standing Water After Extreme Rains

Salt Lake City Breaks October Rain Record at 4.16 Inches as More Storms Loom

Colorado River Report Warns of Imminent System Crash, Presses Cuts and Glen Canyon Dam Overhaul

Heavy Rain Lifts Yorkshire Reservoirs to 45.6%, Biggest Weekly Rise in 30 Years

Sabesp Extends Nighttime Water Pressure Cuts to 19:00–05:00 Across Greater São Paulo

Barton Springs Aquifer Enters Stage 3 Exceptional Drought, With Mandatory Cuts Starting Oct. 1

Colorado River Experts Warn of Near-Term Shortfall, Urge Immediate Basinwide Cuts

Yorkshire Reservoirs Drop to 32.6% as Drought Reveals Long-Submerged Structures

Newfoundland Town Runs Dry as Canada’s Coast-to-Coast Drought Deepens

Cutzamala Reaches 67.86% Capacity After Record Weekly Inflows as National Reservoirs Hit 50%

German Water Utilities Warn of Heatwave Strains and Future Shortages