About this river
Antietam Creek is a 10.6 mile river near Harpers Ferry Adventure Center in Virginia. Streamflow is measured at the USGS gauge Antietam Creek near Sharpsburg, MD (site 01619500). The National Hydrography Dataset places it at stream order 5. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1931 to 2026
Antietam Creek typically runs highest in March, at a median 386 cfs, and lowest in October, at 126 cfs. The highest flow on record for any single day is 8,970 cfs, in 1975.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 233 | 144 to 382 | |
| February | 288 | 186 to 437 | |
| March | 386 | 266 to 558 | |
| April | 383 | 275 to 549 | |
| May | 320 | 236 to 462 | |
| June | 237 | 182 to 324 | |
| July | 176 | 138 to 246 | |
| August | 149 | 119 to 190 | |
| September | 130 | 102 to 173 | |
| October | 126 | 99 to 172 | |
| November | 139 | 105 to 206 | |
| December | 191 | 119 to 334 |
Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 96 years of record. Statistics published by the US Geological Survey for Antietam Creek near Sharpsburg, MD (site 01619500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
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Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Antietam Creek's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
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