| Gunpowder River | |
|---|---|
 Gunpowder River travelling through Loch Raven Reservoir in Towson, Maryland, in 2010 | |
 | |
| Location | |
| Country | United States |
| State | Maryland |
| Cities | Middle River, Joppatowne, Towson, Cockeysville, Parkton, Lineboro |
| Physical characteristics | |
| Source | |
| • location | Glen Rock, Pennsylvania |
| Mouth | Chesapeake Bay |
• elevation | 0 ft (0 m) |
| Basin features | |
| Tributaries | |
| • left | Little Gunpowder Falls |
| • right | Big Gunpowder Falls |
The Gunpowder River is a 6.8-mile-long (10.9 km)[1] tidal inlet on the western side of the Chesapeake Bay in Maryland, United States. It is formed by the joining of two freshwater rivers, Gunpowder Falls (often referred to locally as "Big Gunpowder Falls") and Little Gunpowder Falls.
- ^ U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map Archived 2012-06-30 at archive.today, accessed April 1, 2011