SNOFLO


The Complete Hydrology Resource for North America




Snow & Water Data for the Nation, From the Sky Down to the Aquifer

Understanding the water cycle requires a comprehensive insight into hydrology that nobody else can offer. We provide you with crucial tools for water supply management, outdoor recreation, conservation planning, and so much more.




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Snoflo is a Colorado based grassroots organization dedicated to understanding the natural environment. Our proprietary algorithms continuously process multitudes of data delivering precision to ensure that you're prepared for the season ahead. We are the ultimate source for hydrology data across North America.


  • $3.99/month
  • Premium Access
  • Advanced Mapping & Layers
  • Advanced Gauge Analysis and Forecasting
  • Watershed & River Statistics
  • Favorites Analysis and Visualizations
  • Unlimited Alerts for Snowpack and Streamflow
  • Snowpack and Streamgauge Data
  • Avalanche Data
  • Groundwater Data
  • Reservoir Levels
  • River Data
  • Watershed Data
  • Ski Reports
  • River Run Reports
  • Fishing Area Reports

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  • Access premium mapping features and advanced interactive layers
  • Advanced forecasting with hourly analysis for mountains, rivers, reservoirs, and groundwater locations
  • Comprehensive seasonal analysis and hydrologic statistics for thousands of watersheds
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