fwatlasbc is an R package for querying data from the Freshwater
Atlas
(FWA) of British Columbia. Spatial data are returned as simple
features.
fwatlasbc wraps
fwapgr an R package
that uses the fwapg API.
You can install the latest version of fwatlasbc from
GitHub with:
# install.packages("devtools")
devtools::install_github("poissonconsulting/fwatlasbc")Find stream names using regular expression. There may be more than one stream name that matches the regular expression.
library(fwatlasbc)
streams <- fwa_find_stream_names("steep c")
streams
#> # A tibble: 2 × 1
#> stream_name
#> <chr>
#> 1 Steep Canyon Creek
#> 2 Steep CreekAdd blue line keys (blk) to stream names. There may be multiple streams with the same name.
blks <- fwa_add_blks_to_stream_name(streams)
blks
#> # A tibble: 4 × 2
#> stream_name blk
#> <chr> <int>
#> 1 Steep Canyon Creek 360883036
#> 2 Steep Creek 356362258
#> 3 Steep Creek 356534225
#> 4 Steep Creek 356570155
blks <- blks[blks$blk == 356534225,]Alternatively get the nearest blue line key and river meter (rm) from the longitude and latitude. The river meter is the distance in meters as the fish swims from the mouth of the river. The distance_to_lon_lat is the how far the original point was from the stream in meters.
fwa_add_blk_to_lon_lat(data.frame(lon = -132.26, lat = 53.36))
#> Simple feature collection with 1 feature and 5 fields
#> Geometry type: POINT
#> Dimension: XY
#> Bounding box: xmin: 585153.6 ymin: 946162.9 xmax: 585153.6 ymax: 946162.9
#> Projected CRS: NAD83 / BC Albers
#> # A tibble: 1 × 6
#> lon lat blk rm distance_to_lon_lat geometry
#> <dbl> <dbl> <dbl> <dbl> <dbl> <POINT [m]>
#> 1 -132. 53.4 360824839 1118. 508. (585153.6 946162.9)Get watershed (by aggregating fundamental watersheds) for a blue line key and river meter (by default 0). If it errors try increasing the river meter.
wshed <- fwa_add_watershed_to_blk(blks)
wshed
#> Simple feature collection with 1 feature and 3 fields
#> Geometry type: POLYGON
#> Dimension: XY
#> Bounding box: xmin: 1656218 ymin: 725423.1 xmax: 1661726 ymax: 732146.2
#> Projected CRS: NAD83 / BC Albers
#> # A tibble: 1 × 4
#> stream_name blk rm geometry
#> <chr> <int> <dbl> <POLYGON [m]>
#> 1 Steep Creek 356534225 0 ((1658107 728964.9, 1658107 728964.9, 1658179 728…Get stream network for the watershed polygon. Note that rm is from the original watershed while downstream/upstream_route_measure are the equivalents for the stream segment in the network.
network <- fwa_add_collection_to_polygon(wshed, "stream_network")
network
#> Simple feature collection with 76 features and 31 fields
#> Geometry type: LINESTRING
#> Dimension: XY
#> Bounding box: xmin: 1656200 ymin: 725423.1 xmax: 1661368 ymax: 731602.7
#> Projected CRS: NAD83 / BC Albers
#> # A tibble: 76 × 32
#> stream…¹ blk rm blue_…² blue_…³ downs…⁴ edge_…⁵ featu…⁶ featu…⁷ fwa_w…⁸
#> <chr> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <chr> <chr> <chr>
#> 1 Steep C… 3.57e8 0 3.57e8 1130 2931. 1250 WA2411… areal … 300-90…
#> 2 Steep C… 3.56e8 0 3.56e8 NA 1110. 1000 GA2485… linear… 300-90…
#> 3 Steep C… 3.57e8 0 3.57e8 NA 0 1000 GA2485… linear… 300-90…
#> 4 Steep C… 3.57e8 0 3.57e8 1142 2594. 1000 GA2485… linear… 300-90…
#> 5 Steep C… 3.57e8 0 3.57e8 1142 2251. 1000 GA2485… linear… 300-90…
#> 6 Steep C… 3.56e8 0 3.56e8 NA 0 1000 GA2485… linear… 300-90…
#> 7 Steep C… 3.56e8 0 3.56e8 NA 0 1000 GA2485… linear… 300-90…
#> 8 Steep C… 3.57e8 0 3.57e8 1131 51.8 1000 GA2485… linear… 300-90…
#> 9 Steep C… 3.57e8 0 3.57e8 1130 751. 1250 WA2411… areal … 300-90…
#> 10 Steep C… 3.56e8 0 3.56e8 NA 346. 1000 GA2485… linear… 300-90…
#> # … with 66 more rows, 22 more variables: gnis_id <dbl>, gnis_name <chr>,
#> # gradient <dbl>, left_right_tributary <chr>, length_metre <dbl>,
#> # linear_feature_id <dbl>, local_watershed_code <chr>, localcode_ltree <chr>,
#> # stream_magnitude <dbl>, stream_order <dbl>, stream_order_max <dbl>,
#> # stream_order_parent <dbl>, upstream_route_measure <dbl>,
#> # waterbody_key <dbl>, watershed_code_50k <chr>, watershed_group_code <chr>,
#> # watershed_group_code_50k <chr>, watershed_group_id <dbl>, …Convert the stream network into a table of blue line keys with regularly spaced river meters starting at 0.
#rms <- fwa_convert_stream_network_to_rms(network, interval = 100)
#rmsPlot the watershed, network and river meters.
ggplot2::ggplot() +
ggplot2::geom_sf(data = wshed) +
ggplot2::geom_sf(data = network, color = "blue") +
# ggplot2::geom_sf(data = rms) +
NULL
fwatlasbc supersedes the archived
fwabc which retrieved
data via
WFS
using bcdata.
fwatlasbc relies on fwapg
API which is created,
maintained and hosted by Simon
Norris at Hillcrest
Geographics.
Please report any issues.
Pull requests are always welcome.
Please note that fwatlasbc is released with a Contributor Code of
Conduct.
By contributing to this project, you agree to abide by its terms.
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