check_args              Helper functions to aid in checking arguments
                        to get_*_layer functions
filter_county_poly      Retrieve county polygon layer
get_fmdb_site_layer     Retrieve WDNR's FMDB Site spatial layer
get_hydro_layer         Retrieve WDNR's HYDRO spatial layer
get_roads_layer         Retrieve WDNR's roads spatial layer
get_watershed_layer     Retrieve a watershed polygon
get_wis_raster_layer    Get WDNR Image and Map Layers
get_wis_rasters         General function to pull Raster layers from a
                        MapServer or ImageServer
list_funs               List available sections, services, layers, and
                        URLs in the WDNR GIS REST API
list_layer_url          Helper function to re-create 'list_layers' and
                        'list_urls'
match_funs              Find available sections, services, or layers
                        using a regular expression
match_watershed_name    Match a watershed's name based on one or more
                        regex
standardize_county_names
                        Standardize county names
watershed_lookup        Various example sf polygons
wdnr.gis-package        wdnr.gis
wi_example_data         Various example data and lookup tables
