Attributes for NHDPlus Catchments (Version 1.1) for the Conterminous United States: Average Monthly Precipitation, 2002
This data set represents the average monthly precipitation in millimeters multiplied by 100 for 
2002 compiled for every catchment of NHDPlus for the conterminous United States. The source 
data were the Near-Real-Time Monthly High-Resolution  Precipitation Climate Data Set for the 
Conterminous United States (2002) …