Import NWIS Daily Data for EGRET analysis

Imports daily data from NWIS web service. This function gets the data from here: https://waterservices.usgs.gov/

Usage

readNWISDaily(siteNumber, parameterCd = "00060", startDate = "",
  endDate = "", verbose = TRUE, convert = TRUE)

Arguments

siteNumber

character USGS site number. This is usually an 8 digit number

parameterCd

character USGS parameter code. This is usually an 5 digit number.

startDate

character starting date for data retrieval in the form YYYY-MM-DD.

endDate

character ending date for data retrieval in the form YYYY-MM-DD.

verbose

logical specifying whether or not to display progress message

convert

logical Option to include a conversion from cfs to cms (35.314667). The default is TRUE, which is appropriate for using NWIS data in the EGRET package. Set this to FALSE to not include the conversion. If the parameter code is not 00060 (NWIS discharge), there is no conversion applied.

Value

A data frame 'Daily' with the following columns:

Name	Type	Description
Date	Date	Date
Q	numeric	Discharge in m^3/s
Julian	integer	Number of days since Jan. 1, 1850
Month	integer	Month of the year [1-12]
Day	integer	Day of the year [1-366]
DecYear	numeric	Decimal year
MonthSeq	integer	Number of months since January 1, 1850
Qualifier	character	Qualifying code
i	integer	Index of days, starting with 1
LogQ	numeric	Natural logarithm of Q
Q7	numeric	7 day running average of Q
Q30	numeric	30 day running average of Q

See also

readNWISdv, populateDaily

Examples

# \donttest{

Daily <- readNWISDaily('01594440','00060',
                       '1985-01-01', '1985-03-31')
#> There are 90 data points, and 90 days.
DailySuspSediment <- readNWISDaily('01594440','80154',
                                   '1985-01-01', '1985-03-31',
                                   convert = FALSE)
#> There are 90 data points, and 90 days.
# }