NWM Reanalysis Extraction — readNWMdata • National Water Model

Download hourly flow values for an NHD COMID from the National Water Model version 1.2 or 2.0. Returned data is available between "1993-01-01 00" and "2017-12-31 23" but can be subset using a startDate and endDate.

readNWMdata(
  comid = NULL,
  siteID = NULL,
  startDate = NULL,
  endDate = NULL,
  tz = "UTC",
  version = 2.1,
  addObs = FALSE
)

Arguments

comid: a NHD common identifier
siteID: a USGS NWIS site identifier (eight digits)
startDate: a start date (YYYY-MM-DD) or (YYYY-MM-DD HH)
endDate: an end date (YYYY-MM-DD) or (YYYY-MM-DD HH)
tz: the desired timezone of the data. Can be found with OlsonNames
version: the NWM version to extract (current = 1.2 or 2 (default))
addObs: should observation data be added? Only available when !is.null(siteID)

Value

data.frame

Examples

if (FALSE) {
readNWMdata(comid = 101)
readNWMdata(comid = 101, version = 1.2)
readNWMdata(comid = 101, tz = "US/Pacific")
}