readNWISdv: Daily Value USGS NWIS Data Retrieval

Description Usage Arguments Value See Also Examples

Description

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

Usage

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readNWISdv(
  siteNumbers,
  parameterCd,
  startDate = "",
  endDate = "",
  statCd = "00003"
)

Arguments

siteNumbers

character USGS site number. This is usually an 8 digit number. Multiple sites can be requested with a character vector.

parameterCd

character of USGS parameter code(s). This is usually an 5 digit number.

startDate

character starting date for data retrieval in the form YYYY-MM-DD. Default is "" which indicates retrieval for the earliest possible record. Date arguments are always specified in local time.

endDate

character ending date for data retrieval in the form YYYY-MM-DD. Default is "" which indicates retrieval for the latest possible record. Date arguments are always specified in local time.

statCd

character USGS statistic code. This is usually 5 digits. Daily mean (00003) is the default.

Value

A data frame with the following columns:

Name Type Description
agency character The NWIS code for the agency reporting the data
site character The USGS site number
Date Date The date of the value
code character Any codes that qualify the corresponding value
value numeric The numeric value for the parameter

Note that code and value are repeated for the parameters requested. The names are of the form X_D_P_S, where X is literal, D is an option description of the parameter, P is the parameter code, and S is the statistic code (if applicable).

There are also several useful attributes attached to the data frame:

Name Type Description
url character The url used to generate the data
siteInfo data.frame A data frame containing information on the requested sites
variableInfo data.frame A data frame containing information on the requested parameters
statisticInfo data.frame A data frame containing information on the requested statistics on the data
queryTime POSIXct The time the data was returned

See Also

renameNWISColumns, importWaterML1

Examples

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site_id <- '04085427'
startDate <- '2012-01-01'
endDate <- '2012-06-30'
pCode <- '00060'

rawDailyQ <- readNWISdv(site_id,pCode, startDate, endDate)
rawDailyQAndTempMeanMax <- readNWISdv(site_id,c('00010','00060'),
       startDate, endDate, statCd=c('00001','00003'))
rawDailyQAndTempMeanMax <- renameNWISColumns(rawDailyQAndTempMeanMax)
rawDailyMultiSites<- readNWISdv(c("01491000","01645000"),c('00010','00060'),
       startDate, endDate, statCd=c('00001','00003'))
# Site with no data:
x <- readNWISdv("10258500","00060", "2014-09-08", "2014-09-14")
names(attributes(x))
attr(x, "siteInfo")
attr(x, "variableInfo")

site <- "05212700"
notActive <- readNWISdv(site, "00060", "2014-01-01","2014-01-07")

dataRetrieval documentation built on Sept. 14, 2021, 5:16 p.m.