bbox2poly               Convert a bounding box to polygon
extract_network         Return nhd plus stream network upstream of a
                        waterbody
find_state              find_state
find_vpu                Find VPU
great_lakes             Data and spatial polygons of the Great Lakes
gull                    List of simple features lake polygons and
                        flowlines within a buffer around Gull Lake
                        Michigan.
gull_flow               Flowlines within a buffer around Gull Lake
                        Michigan including flow information.
leaf_reaches            Return leaf reaches from a network or query
                        intersecting lake
mendota                 List of simple features lake polygons and
                        flowlines within a buffer around Lake Mendota.
mendota_network         Upstream flowlines connected to Lake Mendota.
nhdR-package            R interface to the National Hydrography Dataset
nhd_dl_state            nhd_dl_state
nhd_get                 Download and cache NHD data by state
nhd_info                Return NHD layer metadata and field listing
nhd_list                List available locally cached NHD layers per
                        state
nhd_load                Load NHD layers into current session
nhd_plus_get            Download and cache NHDplus data by vector
                        processing unit
nhd_plus_info           Return NHDplus layer metadata and field listing
nhd_plus_list           List available locally cached NHDplus layers
                        per state
nhd_plus_load           Load NHDplus layers into current session
nhd_plus_query          Select NHDplus features via polygon or circular
                        buffer of coordinate pair
nhd_query               Select NHD features clipped by a circular
                        buffer a coordinate pair
select_point_overlay    Select features clipped by a point buffer
                        around a point
select_poly_overlay     Select features clipped by a polygon
sunapee                 List of simple features lake polygons and
                        flowlines within a buffer around Lake Sunapee.
sunapee_network         Upstream flowlines connected to Lake Sunapee.
terminal_reaches        Return terminal reaches from collection
                        intersecting lake
tip_reaches             Return tip reaches from a network
toUTM                   Re-project to appropriate UTM zone
vpu_shp                 Low-res simple features data frame of the
                        NHDPlus vector processing units
