Potomac River in Maryland
1 of 4 gauges in Maryland are on this site. Source: USGS Water Data API; percentile estimated from USGS daily statistics.
| Gauge | Latest flow | Percentile for date | Drainage sq mi | Observed |
|---|---|---|---|---|
| Little Falls USGS 01646500 | 9,680 cfs | 91st | 11,560 | Oct 16, 9:50 PM EDT |