TidalMapAntietam Creek near Waynesboro, PA 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 01619000 sits on Antietam Creek and reads everything draining 94 square miles of the Conococheague-Opequon basin. Its datum sits 536 feet above sea level NAVD88. Daily flow has been on record here since 1948, 40 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 Potomac River at Harpers Ferry, WV at 6,290 square miles, so what passes this gauge is about 1% of the water measured there.
Normal flows here
Antietam Creek runs a median of 83 cfs at this gauge across 40 years of record. March is the fullest month at a median 136 cfs, and October the leanest at 43 cfs. The highest daily mean on record is 4,090 cfs in 1975, and the lowest is 11 cfs in 1966.
| Month | Median flow | Share of annual median |
|---|---|---|
| Jan | 95 cfs | 114% |
| Feb | 114 cfs | 137% |
| Mar | 136 cfs | 164% |
| Apr | 126 cfs | 152% |
| May | 122 cfs | 147% |
| Jun | 90 cfs | 108% |
| Jul | 60 cfs | 72% |
| Aug | 50 cfs | 60% |
| Sep | 44 cfs | 52% |
| Oct | 43 cfs | 52% |
| Nov | 52 cfs | 63% |
| Dec | 78 cfs | 94% |
Medians from the USGS daily-statistics record, 1948 to 2026. A month at 100% is running at its own long-term median.
Flood stages and record crests
Antietam Creek reaches flood stage at this gauge at 6.5 feet. NWS starts watching it at 5.5 feet. The highest crest on record is 12.3 feet, in June 1972.
| Category | Gage height |
|---|---|
| Action | 5.5 ft |
| Minor flooding | 6.5 ft |
| Moderate flooding | 10 ft |
| Major flooding | 12 ft |
| When | Crest |
|---|---|
| June 1972 | 12.3 ft |
| September 1975 | 11.7 ft |
| June 2006 | 10.5 ft |
| January 1979 | 10.2 ft |
| October 1976 | 10.2 ft |
Flood categories and crest history from the NOAA National Water Prediction Service, gauge WANP1. Stages are gage height, not depth. Not for navigation.
Nearby river gauges
- Conococheague Creek at Fairview, MD
- Fishing Creek at Mountaindale, MD
- Marsh Run at Grimes, MD
- Catoctin Creek near Middletown, MD
- Antietam Creek near Sharpsburg, MD
- Monocacy River at Monocacy Blvd at Frederick, MD
- Monocacy River at Bridgeport, MD
- Big Pipe Creek at Bruceville, MD
- Linganore Creek at Linganore Rd near Frederick, MD
- Monocacy River at Jug Bridge near Frederick, MD
- Potomac River at Burkittsville Rd at Brunswick, MD
- Potomac River at Harpers Ferry, WV
Live streamflow and gage height: USGS gauge 01619000. Percentile context computed against the gauge's period of record. Not for navigation.
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