International

• Hydrological Forecasting System for Niger Basin (HYDRONIGER)
  
• Weekly Reservoir Storage - Southern Africa
  

European

One nation

• Victorian River Basins - Australia
  
• Water Corporation: Water Storage in Perth's Dams - Australia
  
• Finland
  
• 4 Ardèche Rivers Water Levels - France
  
• Reservoir Data - Chennai, S. India
  
• Lake Biwa's Water Level - Japan
  
• Ashley River Catchment Experiment Data - New Zealand
  
• River Flows - Slovakia
  
• Directorate Hydrology - South Africa
  
• Estación Experimental de Zonas Áridas - Spain (Spanish)
  
• Ministerio de Medio Ambiente - Boletín Hidrológico Semanal - Spain (Spanish)
  
• National Operational Hydrologic Remote Sensing Center - USA
  
• Network of Raingauges at Chilbolton - UK
  
• Hydrological Summary - UK
  
• California Cooperative Snow Surveys - USA
  
• United States Environmental Protection Agency - EMPACT - Real Time Environmental Information for Cities Across the Nation - USA
  
• U.S. Geological Survey: Real-Time Water Data - USA
  
• U.S. Geological Survey: National Water Conditions - USA