Imports data from NWIS web service.
A list of parameter and statistic codes can be found here: https://help.waterdata.usgs.gov/codes-and-parameters
For raw data, use readNWISqw from the dataRetrieval package.
This function will retrieve the raw data, and compress it (summing constituents) if
more than 1 parameter code is supplied. See
section 3.2.4 of the vignette for more details.
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. Default is empty quotes "" which will retrieve the full period of record.
- endDate
character ending date for data retrieval in the form YYYY-MM-DD. Default is empty quotes "" which will retrieve the full period of record.
- verbose
logical specifying whether or not to display progress message
Value
A data frame 'Sample' with the following columns:
| Name | Type | Description |
| Date | Date | Date |
| ConcLow | numeric | Lower limit of concentration |
| ConcHigh | numeric | Upper limit of concentration |
| Uncen | integer | Uncensored data (1=TRUE, 0=FALSE) |
| ConcAve | numeric | Average concentration |
| 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 |
| SinDY | numeric | Sine of the DecYear |
| CosDY | numeric | Cosine of the DecYear |
Examples
# \donttest{
# These examples require an internet connection to run
Sample_01075 <- readNWISSample('01594440','01075', '1985-01-01', '1985-03-31')
#> Warning: NWIS qw web services are being retired.
#> Please see vignette('qwdata_changes', package = 'dataRetrieval')
#> for more information.
#> https://cran.r-project.org/web/packages/dataRetrieval/vignettes/qwdata_changes.html
# }