Grid of mean annual precipitation for Oklahoma, 1961-1990 base period.
This digital-map data set consists of a grid of mean annual
precipitation, in inches, based on the period 1961-90, for
Oklahoma.  The data set was derived from the PRISM
(Parameter-elevation Regressions on Independent Slopes Model) mean
annual precipitation grid for the United States, developed by Daly,
Neilson, and …