| cdl_colors | Download and crop the NASS Cropland Data Layer. | 
| get_cdl | Download and crop the NASS Cropland Data Layer. | 
| get_daymet | Download and crop the 1-km DAYMET v4 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_nass | Download and crop the NASS Cropland Data Layer. | 
| get_nass_cdl | Download and crop the NASS Cropland Data Layer. | 
| 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_nlcd | Download and crop the National Land Cover Database. | 
| get_nlcd_annual | Download and crop the Annual National Land Cover Database. | 
| get_padus | Download and crop the PAD-US Dataset. | 
| get_ssurgo | Download and crop data from the NRCS SSURGO soils database. | 
| get_wbd | Download and crop the Watershed Boundary Dataset. | 
| meve | The boundary of Mesa Verde National Park | 
| nlcd_colors | Download and crop the National Land Cover Database. | 
| pal_nlcd | Download and crop the National Land Cover Database. | 
| plot_nhd | A basic plotting function for NHD data. | 
| replace_null | Replace NULLs |