get_daymet              Download and crop the 1-km DAYMET daily weather
                        dataset.
get_ghcn_daily          Download and crop the Global Historical Climate
                        Network-Daily data.
get_itrdb               Download the latest version of the ITRDB, and
                        extract given parameters.
get_ned                 Download and crop the 1 (~30 meter) or 1/3 (~10
                        meter) arc-second National Elevation Dataset.
get_nhd                 Download and crop the National Hydrography
                        Dataset.
get_ssurgo              Download and crop data from the NRCS SSURGO
                        soils database.
