download_nhdplusv2: Download seamless National Hydrography Dataset Version 2...

In nhdplusTools: NHDPlus Tools

Download seamless National Hydrography Dataset Version 2 (NHDPlusV2)

Description

This function downloads and decompresses staged seamless NHDPlusV2 data. The following requirements are needed: p7zip (MacOS), 7zip (windows) Please see: https://www.epa.gov/waterdata/get-nhdplus-national-hydrography-dataset-plus-data for more information and metadata about this data.

Default downloads lower-48 only. See examples for islands. No Alaska data are available.

Usage

download_nhdplusv2(
  outdir,
  url = paste0("https://dmap-data-commons-ow.s3.amazonaws.com/NHDPlusV21/",
    "Data/NationalData/NHDPlusV21_NationalData_Seamless", "_Geodatabase_Lower48_07.7z"),
  progress = TRUE
)

Arguments

outdir	The folder path where data should be downloaded and extracted
url	the location of the online resource
progress	boolean display download progress?

Value

character path to the local geodatabase

Examples

## Not run: 
  download_nhdplusV2("./data/nhd/")

  download_nhdplusv2(outdir = "./inst/",
      url = paste0("https://dmap-data-commons-ow.s3.amazonaws.com/NHDPlusV21/",
                   "Data/NationalData/NHDPlusV21_NationalData_Seamless",
                   "_Geodatabase_HI_PR_VI_PI_03.7z"))

## End(Not run)

nhdplusTools documentation built on June 10, 2025, 5:11 p.m.