Extract station regulation from the HYDAT database

Provides wrapper to turn the hy_stn_regulation table in HYDAT into a tidy data frame of station regulation. station_number and prov_terr_state_loc can both be supplied. If both are omitted all values from the hy_stations table are returned.

Usage

hy_stn_regulation(
  station_number = NULL,
  hydat_path = NULL,
  prov_terr_state_loc = NULL
)

Format

A tibble with 4 variables:

STATION_NUMBER

Unique 7 digit Water Survey of Canada station number

Year_from

First year of use

Year_to

Last year of use

REGULATED

logical

Source

HYDAT

Arguments

station_number

A seven digit Water Survey of Canada station number. If this argument is omitted, the value of prov_terr_state_loc is returned.

hydat_path

The path to the hydat database or NULL to use the default location used by download_hydat. It is also possible to pass in an existing src_sqlite such that the database only needs to be opened once per user-level call.

prov_terr_state_loc

Province, state or territory. If this argument is omitted, the value of station_number is returned. See unique(allstations$prov_terr_state_loc). Will also accept CA to return only Canadian stations.

Value

A tibble of stations, years of regulation and the regulation status

See also

Other HYDAT functions: hy_agency_list(), hy_annual_instant_peaks(), hy_annual_stats(), hy_daily_flows(), hy_daily_levels(), hy_daily(), hy_data_symbols, hy_data_types, hy_datum_list(), hy_monthly_flows(), hy_monthly_levels(), hy_reg_office_list(), hy_sed_daily_loads(), hy_sed_daily_suscon(), hy_sed_monthly_loads(), hy_sed_monthly_suscon(), hy_sed_samples_psd(), hy_sed_samples(), hy_stations(), hy_stn_data_coll(), hy_stn_data_range(), hy_stn_op_schedule(), hy_version()

Examples

if (FALSE) {
## Multiple stations province not specified
hy_stn_regulation(station_number = c("08NM083", "08NE102"))

## Multiple province, station number not specified
hy_stn_regulation(prov_terr_state_loc = c("AB", "YT"))
}