Red River at Port Royal, TN
Montgomery County, Tennessee · USGS 03436100
Latest observation
What this gauge represents: This gauge measures conditions on Red River at its USGS monitoring location in Montgomery County; conditions elsewhere on the waterway may differ.
Observed · 1 hour ago
Observed
How to read these numbers
How much water moves past the gauge each second. Higher numbers mean more water is moving downstream.
The water-surface height at this gauge. It is useful for tracking rises, falls and flood thresholds, but it is not the river's total depth.
How much the latest reading has risen or fallen compared with roughly 24 hours earlier.
The typical streamflow for this date based on USGS historical statistics. A multiple such as 3× means current flow is about three times the historical median.
Get Water Data's plain-language summary of current flow, historical context and recent direction.
Official action and flood thresholds where available. These levels are specific to each gauge location.
Gauge height and flood stage are station-specific. A 12-foot reading at one gauge should not be directly compared with 12 feet at another.
Below historical median · Steady
Streamflow is currently 105 ft³/s, 38% below the historical median for this date. Flow has been relatively steady over the past 24 hours.
USGS-reported historical daily median for 09-27: 170 ft³/s · Based on USGS day-of-year statistics
How trends & context are calculated →Streamflow trend
Daily mean streamflow · Aug 28–Sep 25 · dates shown in UTC · 29 observations
Look at the data (29 rows)
| Date (UTC) | Daily mean |
|---|---|
| Aug 28, 2026, 12:00 AM | 188 CFS |
| Aug 29, 2026, 12:00 AM | 178 CFS |
| Aug 30, 2026, 12:00 AM | 169 CFS |
| Aug 31, 2026, 12:00 AM | 159 CFS |
| Sep 1, 2026, 12:00 AM | 154 CFS |
| Sep 2, 2026, 12:00 AM | 145 CFS |
| Sep 3, 2026, 12:00 AM | 144 CFS |
| Sep 4, 2026, 12:00 AM | 138 CFS |
| Sep 5, 2026, 12:00 AM | 134 CFS |
| Sep 6, 2026, 12:00 AM | 129 CFS |
| Sep 7, 2026, 12:00 AM | 126 CFS |
| Sep 8, 2026, 12:00 AM | 122 CFS |
| Sep 9, 2026, 12:00 AM | 122 CFS |
| Sep 10, 2026, 12:00 AM | 115 CFS |
| Sep 11, 2026, 12:00 AM | 135 CFS |
| Sep 12, 2026, 12:00 AM | 223 CFS |
| Sep 13, 2026, 12:00 AM | 238 CFS |
| Sep 14, 2026, 12:00 AM | 196 CFS |
| Sep 15, 2026, 12:00 AM | 161 CFS |
| Sep 16, 2026, 12:00 AM | 143 CFS |
| Sep 17, 2026, 12:00 AM | 131 CFS |
| Sep 18, 2026, 12:00 AM | 123 CFS |
| Sep 19, 2026, 12:00 AM | 116 CFS |
| Sep 20, 2026, 12:00 AM | 113 CFS |
| Sep 21, 2026, 12:00 AM | 112 CFS |
| Sep 22, 2026, 12:00 AM | 109 CFS |
| Sep 23, 2026, 12:00 AM | 105 CFS |
| Sep 24, 2026, 12:00 AM | 105 CFS |
| Sep 25, 2026, 12:00 AM | 107 CFS |
About this gauge
Official USGS station
Get Water Data organizes provisional public monitoring data from the U.S. Geological Survey.
View USGS station →