get_nhd function

Download and crop the National Hydrography Dataset.

get_nhd returns a list of Simple Feature objects extracted from the National Hydrography Dataset.

get_nhd(
  template,
  label,
  nhdplus = FALSE,
  extraction.dir = file.path(tempdir(), "FedData", "extractions", "nhd", label),
  force.redo = FALSE
)

Arguments

• template: An Simple Feature

  or SpatRaster 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?

Returns

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

Examples

## Not run:

# Get the NHD (USA ONLY)
NHD <- get_nhd(
  template = FedData::meve,
  label = "meve"
)
NHD
NHD %>%
  plot_nhd(template = FedData::meve)
## End(Not run)