Precipitation Frequency for Ohio River Basin, USA - NOAA Atlas 14 Volume 2

This GIS grid atlas contains precipitation frequency estimates for the Ohio River Basin and Surrounding states is based on precipitation data collected between 4/1863-12/2000. This atlas is an updated version of Technical Memorandum NWS Hydro 35, Five to 60-minutes Precipitation Frequency for Eastern and Central United States (1977), Technical Paper 40 - Rainfall Frequency Atlas of the United States for Durations from 30 minutes to 24 hours and Return Periods from 1 to 100 Years (1961) and Technical Paper 49 - Two-to-Ten-Day Precipitation for Return Periods of 2 to 100 Years in the Contiguous United States (1964) for the following states: Delaware, District of Columbia, Illinois, Indiana, Kentucky, Maryland, New Jersey, North Carolina, Ohio, Pennsylvania, South Carolina, Tennessee, Virginia and West Virginia. The grids provide information for durations from 5 minutes through 60 days, and for return periods of 2 years through 1000 years. All grids are in geographic coordinate system (WGS72 horizontal datum) and units are in 1000th of inches.