TidalMapAntietam Creek near Sharpsburg, MD 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 01619500 sits on Antietam Creek and reads everything draining 281 square miles of the Conococheague-Opequon basin. Its datum sits 310 feet above sea level NAVD88. Daily flow has been on record here since 1931, 96 years of it.
Normal flows here
Antietam Creek runs a median of 210 cfs at this gauge across 96 years of record. March is the fullest month at a median 386 cfs, and October the leanest at 126 cfs. The highest daily mean on record is 8,970 cfs in 1975, and the lowest is 34 cfs in 2025.
| Month | Median flow | Share of annual median |
|---|---|---|
| Jan | 233 cfs | 111% |
| Feb | 288 cfs | 137% |
| Mar | 386 cfs | 183% |
| Apr | 383 cfs | 182% |
| May | 320 cfs | 152% |
| Jun | 237 cfs | 113% |
| Jul | 176 cfs | 84% |
| Aug | 149 cfs | 71% |
| Sep | 130 cfs | 62% |
| Oct | 126 cfs | 60% |
| Nov | 138 cfs | 66% |
| Dec | 191 cfs | 91% |
Medians from the USGS daily-statistics record, 1931 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 8 feet. NWS starts watching it at 7 feet. The highest crest on record is 16.7 feet, in July 1956.
| Category | Gage height |
|---|---|
| Action | 7 ft |
| Minor flooding | 8 ft |
| Moderate flooding | 10 ft |
| Major flooding | 12 ft |
| When | Crest |
|---|---|
| July 1956 | 16.7 ft |
| September 1975 | 14.7 ft |
| June 1972 | 14.3 ft |
| January 1996 | 13.7 ft |
| July 1928 | 11.9 ft |
Flood categories and crest history from the NOAA National Water Prediction Service, gauge SACM2. Stages are gage height, not depth. Not for navigation.
Nearby river gauges
- Marsh Run at Grimes, MD
- Potomac River at Harpers Ferry, WV
- Piney Run near Lovettsville, VA
- Potomac River at Burkittsville Rd at Brunswick, MD
- Catoctin Creek near Middletown, MD
- Catoctin Creek at Taylorstown, VA
- Potomac River at Point of Rocks, MD
- North Fork Catoctin Creek at Rt 681 near Waterford, VA
- Fishing Creek at Mountaindale, MD
- Conococheague Creek at Fairview, MD
- South Fork Catoctin Creek at Rt 698 near Waterford, VA
- Antietam Creek near Waynesboro, PA
Live streamflow and gage height: USGS gauge 01619500. Percentile context computed against the gauge's period of record. Not for navigation.
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