| Program Name | Description |
| about | Water Data for the Nation |
| annual | Water Year Statistics |
| calendar | Calendar Year Statistics |
| current | Real-Time Data |
| doc | Water Data for the Nation HelpSystem |
| docs | Water Data for the Nation HelpSystem |
| dv | Daily Data |
| dvstat | Water Year Statistics |
| feedback | NwisWeb Feedback Page |
| gw | Water Data for the Nation |
| gwlevel | Groundwater levels |
| gwlevels | Groundwater levels |
| help | Water Data for the Nation HelpSystem |
| inventory | Site Inventory |
| man | Station Home Page |
| map | Site Map |
| measurement | Streamflow Measurements |
| measurements | Streamflow Measurements |
| monthly | Water Year Statistics |
| news | Water Data for the Nation |
| nwis | Water Data for the Nation |
| nwisman | Station Home Page |
| nwismap | Site Map |
| peak | Peak Streamflow |
| peaks | Peak Streamflow |
| pmcode | Parameter Code Definition |
| pmcodes | Parameter Code Definition |
| qw | Water Data for the Nation |
| qwdata | Water Quality Samples |
| realtime | Real-Time Data |
| review | Site Inventory |
| rt | Water Data for the Nation |
| si | Water Data for the Nation |
| site | Site Inventory |
| stat | Water Year Statistics |
| stats | Water Year Statistics |
| sw | Water Data for the Nation |
| uv | Daily Data |
| water | Water Year Statistics |
| water_use | Water Use for the Nation |
| wu | Water Use for the Nation |
May 23, 2013 10:45 EDT: Update:
The outage of the GOES-13 East satellite that occurred on May 22, 2013 which has kept some USGS Water Data current condition data from being updated is only affecting a few sites presently.