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 |
Examples
# \donttest{
Daily <- readNWISDaily('01594440','00060',
'1985-01-01', '1985-03-31')
#> GET: https://waterservices.usgs.gov/nwis/dv/?site=01594440&format=rdb,1.0&ParameterCd=00060&StatCd=00003&startDT=1985-01-01&endDT=1985-03-31
#> There are 90 data points, and 90 days.
DailySuspSediment <- readNWISDaily('01594440','80154',
'1985-01-01', '1985-03-31',
convert = FALSE)
#> GET: https://waterservices.usgs.gov/nwis/dv/?site=01594440&format=rdb,1.0&ParameterCd=80154&StatCd=00003&startDT=1985-01-01&endDT=1985-03-31
#> There are 90 data points, and 90 days.
# }