Download and crop the National Hydrography Dataset.

Source: R/NHD_FUNCTIONS.R

get_nhd returns a list of `sf` objects extracted from the National Hydrography Dataset.

get_nhd(
  template,
  label,
  nhdplus = FALSE,
  extraction.dir = paste0(tempdir(), "/FedData/"),
  force.redo = FALSE
)

Arguments

template

A `Raster*`, `Spatial*`, or `sf` object to serve as a template for cropping.
label

A character string naming the study area.
nhdplus

Extract data from the USGS NHDPlus High Resolution service (experimental)
extraction.dir

A character string indicating where the extracted and cropped NHD data should be put.
force.redo

If an extraction for this template and label already exists, should a new one be created?

Value

A list of `sf` collections extracted from the National Hydrography Dataset.

Examples

if (FALSE) {
# Get the NHD (USA ONLY)
NHD <- get_nhd(
  template = FedData::meve,
  label = "meve"
)
NHD
NHD %>%
  plot_nhd(template = FedData::meve)
}