Attributes for NHDPlus Catchments (Version 1.1) for the Conterminous United States: Normalized Atmospheric Deposition for 2002, Total Inorganic Nitrogen
This data set represents the average normalized atmospheric (wet) deposition, in kilograms, 
of Total Inorganic Nitrogen for the year 2002 compiled for every catchment of NHDPlus for 
the conterminous United States. Estimates of Total Inorganic Nitrogen deposition are based 
on National Atmospheric Deposition Program …