About this river
Gilbert Swamp Run is a 3.8 mile canal near Atlantic Kayak Co in Maryland. Streamflow is measured at the USGS gauge Zekiah Swamp Run near Newtown, MD (site 01660920). The National Hydrography Dataset places it at stream order 5. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1983 to 2025
Gilbert Swamp Run typically runs highest in March, at a median 104 cfs, and lowest in September, at 3.5 cfs. The highest flow on record for any single day is 11,200 cfs, in 2011.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 82 | 47 to 135 | |
| February | 98 | 60 to 163 | |
| March | 104 | 66 to 183 | |
| April | 99 | 60 to 147 | |
| May | 62 | 34 to 111 | |
| June | 25 | 8.2 to 69 | |
| July | 8.2 | 2.0 to 32 | |
| August | 5.8 | 0.3 to 32 | |
| September | 3.5 | 0.1 to 28 | |
| October | 14 | 4.4 to 45 | |
| November | 39 | 17 to 88 | |
| December | 67 | 33 to 132 |
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 41 years of record. Statistics published by the US Geological Survey for Zekiah Swamp Run near Newtown, MD (site 01660920). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Gilbert Swamp Run's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
See every free widget you can put on your site, including live conditions and a 7 day forecast.
