Provides wrapper to turn the hy_sed_samples table in HYDAT into a tidy data frame of instantaneous sediment sample information. station_number and prov_terr_state_loc can both be supplied. If both are omitted all values from the hy_stations table are returned. That is a large vector for hy_sed_samples.

hy_sed_samples(
  station_number = NULL,
  hydat_path = NULL,
  prov_terr_state_loc = NULL,
  start_date = NULL,
  end_date = NULL
)

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.

start_date

Leave blank if all dates are required. Date format needs to be in YYYY-MM-DD. Date is inclusive.

end_date

Leave blank if all dates are required. Date format needs to be in YYYY-MM-DD. Date is inclusive.

Format

A tibble with 19 variables:

STATION_NUMBER

Unique 7 digit Water Survey of Canada station number

SED_DATA_TYPE

Contains the type of sampling method used in collecting sediment for a station

Date

Contains the time to the nearest minute of when the sample was taken

SAMPLE_REMARK_CODE

Descriptive Sediment Sample Remark in English

TIME_SYMBOL

An "E" symbol means the time is an estimate only

FLOW

Contains the instantaneous discharge in cubic metres per second at the time the sample was taken

SYMBOL_EN

Indicates a condition where the daily mean has a larger than expected error

SAMPLER_TYPE

Contains the type of measurement device used to take the sample

SAMPLING_VERTICAL_LOCATION

The location on the cross-section of the river at which the single sediment samples are collected. If one of the standard locations is not used the distance in meters will be shown

SAMPLING_VERTICAL_EN

Indicates sample location relative to the regular measurement cross-section or the regular sampling site

TEMPERATURE

Contains the instantaneous water temperature in Celsius at the time the sample was taken

CONCENTRATION_EN

Contains the instantaneous concentration sampled in milligrams per litre

SV_DEPTH2

Depth 2 for split vertical depth integrating (m)

Source

HYDAT

Value

A tibble of instantaneous sediment samples data

See also

Examples

if (FALSE) { hy_sed_samples(station_number = "01CA004") }