plot_nhdplus: Plot NHDPlus

View source: R/plot_nhdplus.R

plot_nhdplusR Documentation

Plot NHDPlus


Given a list of outlets, get their basin boundaries and network and return a plot in EPSG:3857 Web Mercator Projection.


  outlets = NULL,
  bbox = NULL,
  streamorder = NULL,
  nhdplus_data = NULL,
  gpkg = NULL,
  plot_config = NULL,
  basemap = "Esri.NatGeoWorldMap",
  zoom = NULL,
  add = FALSE,
  actually_plot = TRUE,
  overwrite = TRUE,
  flowline_only = NULL,
  cache_data = NULL



list of nldi outlets. Other inputs are coerced into nldi outlets, see details.


object of class bbox with a defined crs. See examples.


integer only streams of order greater than or equal will be returned


geopackage containing source nhdplus data (omit to download)


path and file with .gpkg ending. If omitted, no file is written.


list containing plot configuration, see details.


character indicating which basemap type to use. Chose from: get_tiles.


integer passed on to get_tiles. This value will override the default set by the package.


boolean should this plot be added to an already built map.


boolean actually draw the plot? Use to get data subset only.


passed on the subset_nhdplus.


boolean only subset and plot flowlines only, default=FALSE


character path to rds file where all plot data can be cached. If file doesn't exist, it will be created. If set to FALSE, all caching will be turned off – this includes basemap tiles.


plot_nhdplus supports several input specifications. An unexported function "as_outlet" is used to convert the outlet formats as described below.

  1. if outlets is omitted, the bbox input is required and all nhdplus data in the bounding box is plotted.

  2. If outlets is a list of integers, it is assumed to be NHDPlus IDs (comids) and all upstream tributaries are plotted.

  3. if outlets is an integer vector, it is assumed to be all NHDPlus IDs (comids) that should be plotted. Allows custom filtering.

  4. If outlets is a character vector, it is assumed to be NWIS site ids.

  5. if outlets is a list containing only characters, it is assumed to be a list of nldi features and all upstream tributaries are plotted.

  6. if outlets is a data.frame with point geometry, a point in polygon match is performed and upstream with tributaries from the identified catchments is plotted.

The plot_config parameter is a list with names "basin", "flowline", "outlets", "network_wtbd", and "off_network_wtbd". The following shows the defaults that can be altered.

  1. basin

        list(lwd = 1, col = NA, border = "black")
  2. flowline

        list(lwd = 1, col = "blue")
  3. outlets

       list(default = list(col = "black", border = NA, pch = 19, cex = 1),
            nwissite = list(col = "grey40", border = NA, pch = 17, cex = 1),
            huc12pp = list(col = "white", border = "black", pch = 22, cex = 1),
            wqp = list(col = "red", border = NA, pch = 20, cex = 1))
  4. network_wtbd list(lwd = 1, col = "lightblue", border = "black")

  5. off_network_wtbd list(lwd = 1, col = "darkblue", border = "black")

If adding additional layers to the plot, data must be projected to EPSG:3857 with 'sf::st_transform(x, 3857)' prior to adding to the plot.


data.frame plot data is returned invisibly in NAD83 Lat/Lon.


# Beware plot_nhdplus caches data to the default location.
# If you do not want data in "user space" change the default.
old_dir <- nhdplusTools::nhdplusTools_data_dir()


plot_nhdplus("05428500", streamorder = 2)

plot_nhdplus(list(13293970, 13293750))

source(system.file("extdata/sample_data.R", package = "nhdplusTools"))

plot_nhdplus(list(13293970, 13293750), streamorder = 3, nhdplus_data = sample_data)

plot_nhdplus(list(list("comid", "13293970"),
                  list("nwissite", "USGS-05428500"),
                  list("huc12pp", "070900020603"),
                  list("huc12pp", "070900020602")),
             streamorder = 2,
             nhdplus_data = sample_data)

plot_nhdplus(sf::st_as_sf(data.frame(x = -89.36083,
                                     y = 43.08944),
                          coords = c("x", "y"), crs = 4326),
             streamorder = 2,
             nhdplus_data = sample_data)

plot_nhdplus(list(list("comid", "13293970"),
                  list("nwissite", "USGS-05428500"),
                  list("huc12pp", "070900020603"),
                  list("huc12pp", "070900020602")),
             streamorder = 2,
             nhdplus_data = sample_data,
             plot_config = list(basin = list(lwd = 2),
                                outlets = list(huc12pp = list(cex = 1.5),
                                               comid = list(col = "green"))))

bbox <- sf::st_bbox(c(xmin = -89.43, ymin = 43, xmax = -89.28, ymax = 43.1),
                    crs = "+proj=longlat +datum=WGS84 +no_defs")

fline <- sf::read_sf(sample_data, "NHDFlowline_Network")
comids <- nhdplusTools::get_UT(fline, 13293970)


#' # With Local Data
plot_nhdplus(bbox = bbox, nhdplus_data = sample_data)

# With downloaded data
plot_nhdplus(bbox = bbox, streamorder = 3)

# Can also plot on top of the previous!
plot_nhdplus(bbox = bbox, nhdplus_data = sample_data,
             plot_config = list(flowline = list(lwd = 0.5)))
plot_nhdplus(comids, nhdplus_data = sample_data, streamorder = 3, add = TRUE,
             plot_config = list(flowline = list(col = "darkblue")))


nhdplusTools documentation built on May 29, 2024, 2:49 a.m.