Imports data from USGS site file site. This function gets data from here: https://waterservices.usgs.gov/
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 | Site name |
| site_tp_cd | character | Site type |
| lat_va | numeric | DMS latitude |
| long_va | numeric | DMS longitude |
| dec_lat_va | numeric | Decimal latitude |
| dec_long_va | numeric | Decimal longitude |
| coord_meth_cd | character | Latitude-longitude method |
| coord_acy_cd | character | Latitude-longitude accuracy |
| coord_datum_cd | character | Latitude-longitude datum |
| dec_coord_datum_cd | character | Decimal Latitude-longitude datum |
| district_cd | character | District code |
| state_cd | character | State code |
| county_cd | character | County code |
| country_cd | character | Country code |
| land_net_ds | character | Land net location description |
| map_nm | character | Name of location map |
| map_scale_fc | character | Scale of location map |
| alt_va | numeric | Altitude of Gage/land surface |
| alt_meth_cd | character | Method altitude determined |
| alt_acy_va | numeric | Altitude accuracy |
| alt_datum_cd | character | Altitude datum |
| huc_cd | character | Hydrologic unit code |
| basin_cd | character | Drainage basin code |
| topo_cd | character | Topographic setting code |
| instruments_cd | character | Flags for instruments at site |
| construction_dt | character | Date of first construction |
| inventory_dt | character | Date site established or inventoried |
| drain_area_va | numeric | Drainage area |
| contrib_drain_area_va | numeric | Contributing drainage area |
| tz_cd | character | Time Zone abbreviation |
| local_time_fg | character | Site honors Daylight Savings Time |
| reliability_cd | character | Data reliability code |
| gw_file_cd | character | Data-other GW files |
| nat_aqfr_cd | character | National aquifer code |
| aqfr_cd | character | Local aquifer code |
| aqfr_type_cd | character | Local aquifer type code |
| well_depth_va | numeric | Well depth |
| hole_depth_va | numeric | Hole depth |
| depth_src_cd | character | Source of depth data |
| project_no | character | Project number |
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 |
| comment | character | Header comments from the RDB file |