Monocacy River
Starting at the Pennsylvania line, the Monocacy runs south through Frederick County, Maryland, past the Frederick area, and enters the Potomac beside the C&O Canal's Monocacy Aqueduct.
Course of the river, simplified. Map data from Natural Earth (public domain).
Weather at the Monocacy River (National Weather Service) ↗
River facts
| Length | 58 miles |
|---|---|
| Source | Near Harney, Maryland, where Marsh Creek and Rock Creek meet |
| Mouth | Joins the Potomac River near Dickerson, Maryland |
| State | Maryland |
Boat ramps, launches and bait shops
Detailed ramp, bait shop and lock-and-dam listings for the Monocacy River are coming soon. Until then, these searches open Google Maps along the river:
Fishing regulations
Check the state agency for river-specific rules, seasons and limits before you fish:
Facts from Monocacy River (Wikipedia) ↗