dams dams is an R data package interface to the United States National Inventory of Dams (NID) http://nid.usace.army.mil Installation Stable version from CRAN install.packages("dams") Development version from Github devtools::install_github("jsta/dams") Usage library(dams) data(nid_subset) Metadata See metadata field descriptions. References http://nid.usace.army.mil/