Strait of Georgia Synoptic Bottom Trawl Survey Grid

Survey blocks for the Strait of Georgia (SOG) Synoptic Bottom Trawl Survey. This dataset contains only active survey blocks and represents the grid used for the Strait of Georgia synoptic survey (survey series ID 45).

Usage

sog_grid

Format

Simple feature (sf) collection with 7 fields:

survey_series_id

Unique identifier for the survey series (45 for SOG).

survey_abbrev

Survey abbreviation: "SYN SOG".

block_id

Unique identifier for each grid cell (BLOCK_DESIGNATION in GFBioSQL).

grouping_code

Strata grouping code used to join with strata data from the GROUPING table in GFBioSQL.

depth_m

Depth in metres.

active_block

Is block actively fished (all blocks in this dataset are active).

area

Overwater area in km^2.

geometry

Represents grid cell.

See also

load_survey_blocks for loading this dataset with additional options (polygon, centroid, or coordinate formats).

Examples

requireNamespace("ggplot2", quietly = TRUE)
library(sf)
#> Linking to GEOS 3.12.1, GDAL 3.8.4, PROJ 9.4.0; sf_use_s2() is TRUE
library(ggplot2)
gfdata::sog_grid |>
  ggplot() +
  geom_sf(aes(fill = depth_m)) +
  theme_minimal() +
  scale_fill_viridis_c(name = "Depth (m)")

attr(gfdata::sog_grid, "date-generated")
#> [1] "2025-09-04"
attr(gfdata::sog_grid, "date-downloaded")
#> [1] "2025-09-04"