addWaterYear: add a water year column

In dataRetrieval: Retrieval Functions for USGS and EPA Hydrology and Water Quality Data

add a water year column

Description

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

nwisData <- readNWISdv("04085427", "00060", "2012-01-01", "2012-06-30")
nwisData <- addWaterYear(nwisData)

wqpData <- readWQPqw("USGS-01594440", "01075", "", "")
wqpData <- addWaterYear(wqpData)

dataRetrieval documentation built on Oct. 5, 2023, 5:09 p.m.