TidalMapFour Mile Run at Hwy 29 at Falls Church, VA Water Level Today
NWS river forecast
| When | Stage | Flow |
|---|
Forecast from the NOAA National Water Prediction Service. Issued a few times a day and only while a forecast is active. Not for navigation.
Last 30 days
About this gauge
USGS gauge 01652090 sits on Four Mile Run and reads everything draining 0.9 square miles of the Middle Potomac-Anacostia-Occoquan basin. Its datum sits 289 feet above sea level NAVD88. Daily flow has been on record here since 2023, 3 years of it.
Where this gauge sits in the drainage
No gauged site sits above this one on the mainstem, so this is the first published reading on the river. Downstream the next reading comes from Fourmile Run at Alexandria, VA at 13 square miles, so what passes this gauge is about 7% of the water measured there.
Normal flows here
Four Mile Run runs a median of 0.4 cfs at this gauge across 3 years of record. May is the fullest month at a median 0.5 cfs, and September the leanest at 0.1 cfs. The highest daily mean on record is 32 cfs in 2024, and the lowest is 0.1 cfs in 2025.
| Month | Median flow | Share of annual median |
|---|---|---|
| Jan | 0.4 cfs | 107% |
| Feb | 0.5 cfs | 126% |
| Mar | 0.5 cfs | 123% |
| Apr | 0.5 cfs | 138% |
| May | 0.5 cfs | 148% |
| Jun | 0.4 cfs | 104% |
| Jul | 0.4 cfs | 121% |
| Aug | 0.2 cfs | 49% |
| Sep | 0.1 cfs | 38% |
| Oct | 0.2 cfs | 52% |
| Nov | 0.2 cfs | 68% |
| Dec | 0.3 cfs | 77% |
Medians from the USGS daily-statistics record, 2023 to 2026. A month at 100% is running at its own long-term median.
Nearby river gauges
- Tripps Run at Falls Church, VA
- Potomac River near Wash, Dc Little Falls Pump Sta
- Dead Run at Whann Avenue near Mclean, VA
- Fourmile Run at Alexandria, VA
- Accotink Creek near Annandale, VA
- Cameron Run at Alexandria, VA
- Long Branch near Annandale, VA
- Accotink Creek at Keene Mill Rd at Springfield, VA
- Long Branch at Olley Lane near Fairfax, VA
- Difficult Run near Great Falls, VA
- Difficult Run above Fox Lake near Fairfax, VA
- South Fork Little Difficult Run above Mouth near Vienna, VA
Live streamflow and gage height: USGS gauge 01652090. Percentile context computed against the gauge's period of record. Not for navigation.
Open Four Mile Run at Hwy 29 at Falls Church, VA on the live chart →
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