findSampleQ: Find flow for sample times

In USGS-R/USGSHydroTools: Collection of functions for hydrological analysis

Find flow for sample times

Description

Function to find flows values for given sample times. If instantaneous data is available, this function will retrieve that data, otherwise the Daily streamflow data will be used. If the sample times have a start and end time, the flow is the maximum flow in the range of the sample.

Usage

findSampleQ(site, sampleDates, localDaily, value = "Flow")

Arguments

site	string USGS identification number
sampleDates	dataframe with two columns "ActivityStartDateGiven" and "ActivityEndDateGiven"
localDaily	dataframe returned from dataRetrieval
value	character name of discharge column

Value

sampleDates

Examples

site <- "04085427"
sampleDates <- sampleDates
Start_extend <- as.character(as.Date(min(sampleDates$ActivityStartDateGiven, na.rm=TRUE))-60)
End_extend <- as.character(as.Date(max(sampleDates$ActivityStartDateGiven, na.rm=TRUE))+60)
Daily <- dataRetrieval::readNWISdv(site,'00060', Start_extend, End_extend)
Daily <- dataRetrieval::renameNWISColumns(Daily)
sampleDates <- findSampleQ(site, sampleDates, Daily)

USGS-R/USGSHydroTools documentation built on April 17, 2023, 8:09 p.m.