Simple feature polygons of soil data in the Tampa Bay Estuary Program boundary

Usage

tbsoil

Format

A sf object

Details

Used for estimating ungaged non-point source (NPS) loads. The data includes the following columns.

hydgrp: Character for the hydrologic group (A, B, C, D, etc.) of the soil, NA for areas with no SSURGO classification (e.g., open water)
geometry: The geometry column

Projection is NAD83(2011) / Florida West (ftUS), CRS 6443.

NA hydgrp values are treated as group D by util_nps_tbbase rather than excluded, matching RP's own convention (see the "NOSOIL" handling in their SAS workflow) of retaining such areas instead of dropping them from the combined base layer.

Examples

if (FALSE) { # \dontrun{
usdasoil <- st_read('T:/05_GIS/TBEP/TBLOADS/USDA_SSURGO_CLIP_FIPS0902.shp')
tbsoil <- usdasoil |>
  select(hydgrp = SDV_Hydr_1) |>
  group_by(hydgrp) |>
  summarise() |>
  st_transform(crs = 6443)
save(tbsoil, file = 'data/tbsoil.RData', compress = 'xz')
} # }