Returns a list of sites from the NWIS web service. This function gets the data from: https://waterservices.usgs.gov/docs/site-service/. Mapper format is used
Arguments
- ...
- see https://waterservices.usgs.gov/docs/site-service/ for a complete list of options. A list (or lists) can also be supplied. 
Value
A data frame with at least the following columns:
| Name | Type | Description | 
| agency_cd | character | The NWIS code for the agency reporting the data | 
| site_no | character | The USGS site number | 
| station_nm | character | Station name | 
| site_tp_cd | character | Site type code | 
| dec_lat_va | numeric | Decimal latitude | 
| dec_long_va | numeric | Decimal longitude | 
| queryTime | POSIXct | Query time | 
There are also several useful attributes attached to the data frame:
| Name | Type | Description | 
| url | character | The url used to generate the data | 
| queryTime | POSIXct | The time the data was returned | 
