R/data.R
mapUS49HUC2.Rd
USGS Hydrological Unit Code (HUC)
mapUS49HUC2
A SpatialPolygonsDataFrame
https://water.usgs.gov/GIS/huc.html https://nrcs.app.box.com/v/huc
if (FALSE) { library(sp); library(metis) sp::plot(mapUS49HUC2) head(mapUS49HUC2@data) }