Hydrology - River, Rainfall, Snow and Ice Data

Observations & Current Conditions   |   Guidance
Drought Information   |   Miscellaneous Links

Rainfall and River Reports

• River Statements and Warnings including previous versions
• Delaware River Basin and Delmarva
• Passaic and Raritan Basins and Coastal New Jersey

 Streamflow

• New Jersey
• Pennsylvania
• Maryland and Delaware

 Alternate site for Streamflow

• from HADS
• New Jersey
• Pennsylvania
• Maryland
• Delaware

 IFLOWS / ALERT Rainfall Data

• New Jersey
• Pennsylvania
• Maryland

 Daily Snowfall

• New Jersey
• Pennsylvania
• Maryland
• Delaware

 ICE

• Ice Buildup on Rivers
• National Ice Center

 Miscellaneous Charts and Maps

• Snow Water Equivalent Map for Middle Atlantic Area
• Water Temperature Map for Delaware/Lehigh/Schuylkill Rivers and NJ

 Forecasts and Statements

• Daily River and Lake Summary
• Daily Quantitative Precipitation Forecast 
• Flood Potential Statement
• U.S. Significant River Flood Outlook

 Flash Flood Guidance

• New Jersey
• Central and Eastern Pennsylvania
• Maryland
• Delaware

 Headwater Guidance

• New Jersey Streams 
• Delaware and Susquehanna Basins

Drought Information

  NWS Mt. Holly, NJ Drought Information page

Miscellaneous Links

• Middle Atlantic River Forecast Center
• Delaware River Basin Commission 
• Susquehanna River Basin Commission 
• Philadelphia Army Corp of Engineers (Lehigh/Lackawaxen/Schuylkill)
• What Exactly is a 100-Year Flood?
• Precipitation Analysis
• Interactive Snow Analysis
  - from the National Operational Hydrologic Remote Sensing Center (NOHRSC)

Observations & Current Conditions   |   Guidance
Drought Information   |   Miscellaneous Links