Reservoir Levels

Typically drawn down in summer when customer demands increase, water supply reservoirs are designed to refill in the winter and spring through natural runoff and, in some cases, by pumping water into them. Reservoir storage is just one factor that NJDEP uses to evaluate drought conditions and their impact on regional drinking water supplies. 

• Past 90 days Precipitation Departure (National Weather Service)
• Past 365 days Precipitation Departure (National Weather Service)
• New Jersey Statewide Monthly Total Precipitation (The Office of the State Climatologist)
• Weekly Drought Palmer Severity Index (National Oceanic and Atmospheric Administration)
• New Jersey’s Extreme Temperature and Precipitation Months (The Office of the State Climatologist) 

• Delaware Drought Information
• New York State Drought Information
• New York City Drought Information
• Pennsylvania Drought Information
• Delaware River Basin Commission (DRBC)
   

Note: DRBC and other states use similar but not identical criteria for setting drought conditions.