TidalMapCedar Run near Catlett, 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 01656000 sits on Cedar Run and reads everything draining 93 square miles of the Middle Potomac-Anacostia-Occoquan basin. Its datum sits 198 feet above sea level NAVD88. Daily flow has been on record here since 1951, 72 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 Occoquan River at Dam at Lake Jackson, VA at 343 square miles, so what passes this gauge is about 27% of the water measured there.
Normal flows here
Cedar Run runs a median of 28 cfs at this gauge across 72 years of record. March is the fullest month at a median 82 cfs, and September the leanest at 4.2 cfs. The highest daily mean on record is 18,500 cfs in 1972, and the lowest is 0.0 cfs in 1966.
| Month | Median flow | Share of annual median |
|---|---|---|
| Jan | 65 cfs | 232% |
| Feb | 78 cfs | 279% |
| Mar | 82 cfs | 293% |
| Apr | 61 cfs | 218% |
| May | 35 cfs | 125% |
| Jun | 16 cfs | 57% |
| Jul | 7.0 cfs | 25% |
| Aug | 5.2 cfs | 19% |
| Sep | 4.2 cfs | 15% |
| Oct | 6.8 cfs | 24% |
| Nov | 16 cfs | 57% |
| Dec | 46 cfs | 164% |
Medians from the USGS daily-statistics record, 1951 to 2026. A month at 100% is running at its own long-term median.
Flood stages and record crests
Cedar Run reaches flood stage at this gauge at 15 feet. NWS starts watching it at 8 feet. The highest crest on record is 27.7 feet, in June 1972.
| Category | Gage height |
|---|---|
| Action | 8 ft |
| Minor flooding | 15 ft |
| Moderate flooding | 21 ft |
| When | Crest |
|---|---|
| June 1972 | 27.7 ft |
| October 1942 | 22 ft |
| July 2013 | 18.2 ft |
| December 1992 | 17.6 ft |
| June 1955 | 17.2 ft |
Flood categories and crest history from the NOAA National Water Prediction Service, gauge CDRV2. Stages are gage height, not depth. Not for navigation.
Nearby river gauges
- South Fork Quantico Creek near Independent Hill, VA
- Rappahannock River at Remington, VA
- Aquia Creek near Garrisonville, VA
- Flatlick Branch above Frog Branch at Chantilly, VA
- Rappahannock River near Fredericksburg, VA
- Hazel River at Rixeyville, VA
- Difficult Run above Fox Lake near Fairfax, VA
- Goose Creek near Leesburg, VA
- Goose Creek near Middleburg, VA
- South Fork Little Difficult Run above Mouth near Vienna, VA
- Long Branch at Olley Lane near Fairfax, VA
- Snakeden Branch above Lake Audubon at Reston, VA
Live streamflow and gage height: USGS gauge 01656000. Percentile context computed against the gauge's period of record. Not for navigation.
Open Cedar Run near Catlett, VA on the live chart →
River pins, dam-release overlays and wadability lines live in the app, start a free TidalMap trial.