Precipitation Frequency for Northeastern states, USA - NOAA Atlas 14 Volume 10

This GIS grid atlas contains precipitation frequency estimates for the Northeastern states based on precipitation data collected between 1816-2014. This atlas supersedes information in Technical Memorandum NWS Hydro 35, published in 1977, Technical Paper 40, published in 1961, and Technical Paper 49,published in 1964. The grids provide information for durations from 5 minutes through 60 days, and for return periods of 1 year through 1000 years. All grids are in geographic coordinate system (NAD83 horizontal datum) and units are in 1000th of inches.