Reference

Data and Package Helpers Functions that make the package easier to work with.
nhdplus_path()	NHDPlus Data Path
stage_national_data()	Stage NHDPlus National Data
plot_nhdplus()	Plot NHDPlus
subset_nhdplus()	Subset NHDPlus
prepare_nhdplus()	Prep NHDPlus Data
download_nhdplushr()	Download NHDPlus HiRes
get_nhdplushr()	Get NHDPlus HiRes
get_hr_data()	Get NHDPlus HiRes Data
download_nhdplusv2()	Download seamless National Hydrography Dataset Version 2 (NHDPlusV2)
download_rf1()	Download the seamless Reach File (RF1) Database
download_wbd()	Download the seamless Watershed Boundary Dataset (WBD)
align_nhdplus_names()	Align NHD Dataset Names
Network Attributes Functions that generate common river network attributes.
calculate_total_drainage_area()	Total Drainage Area
calculate_arbolate_sum()	Calculate Arbolate Sum
get_levelpaths()	Get Level Paths
get_pathlength()	Get path length
get_terminal()	Get Terminal ID
get_streamorder()	Get Streamorder
get_pfaf()	Get Pfafstetter Codes (Experimental)
make_standalone()	Make isolated NHDPlusHR region a standalone dataset
Discovery and Subsetting Functions for finding and saving the part of the NHDPlus you are interested in working with.
discover_nhdplus_id()	Discover NHDPlus ID
discover_nldi_sources()	Discover NLDI Sources
discover_nldi_navigation()	Discover NLDI Navigation Options
discover_nldi_characteristics()	Discover Characteristics Metadata
get_nldi_characteristics()	Get Catchment Characteristics
get_nldi_basin()	Get NLDI Basin Boundary
get_nldi_feature()	Get NLDI Feature
navigate_nldi()	Navigate NLDI
subset_nhdplus()	Subset NHDPlus
subset_rpu()	Subset by Raster Processing Unit.
get_DD()	Navigate Downstream with Diversions
get_DM()	Navigate Downstream Mainstem
get_UM()	Navigate Upstream Mainstem
get_UT()	Navigate Upstream with Tributaries
Indexing Functions to index and match data to NHDPlus features.
get_flowline_index()	Get Flowline Index
get_waterbody_index()	Get Waterbody Index
get_node()	Get flowline node