add a water year column — addWaterYear • dataRetrieval

Add a column to the dataRetrieval data frame with the water year. WQP queries will return a water year column for the start and end dates of the data.

Usage

addWaterYear(rawData)

Arguments

rawData: the daily- or unit-values datset retrieved from NWISweb. Must have at least one of the following columns to add the new water year columns: `dateTime`, `Date`, `ActivityStartDate`, or `ActivityEndDate`. The date column(s) can be character, POSIXct, Date. They cannot be numeric.

Value

data.frame with an additional integer column with "WY" appended to the date column name. For WQP, there will be 2 columns: `ActivityStartDateWY` and `ActivityEndDateWY`.

Examples

# \donttest{
nwisData <- readNWISdv("04085427", "00060", "2022-01-01", "2022-06-30")
#> GET: https://waterservices.usgs.gov/nwis/dv/?site=04085427&format=waterml,1.1&ParameterCd=00060&StatCd=00003&startDT=2022-01-01&endDT=2022-06-30
nwisData <- addWaterYear(nwisData)

wqpData <- readWQPqw("USGS-01594440", "01075", "", "")
#> GET: https://www.waterqualitydata.us/data/Result/search?siteid=USGS-01594440&pCode=01075&mimeType=csv
#> NEWS: Data does not include USGS data newer than March 11, 2024. More details:
#> https://doi-usgs.github.io/dataRetrieval/articles/Status.html
wqpData <- addWaterYear(wqpData)
# }