Monocacy ( English Monocacy River ) - a river in Maryland ; the longest Maryland tributary of the Potomac . Formed from the confluence of the Pennsylvania rivers Marsh Creek and Rock Creek on the border of Pennsylvania and Maryland. It flows through the territories of Carroll and Frederick counties. The name Monokashi comes from the word Monnockkesey, which in shawni means "radiant river."
| Monokashi | |
|---|---|
| English Monocacy river | |
 Monokashi near Frederick | |
| Characteristic | |
| Length | 93 km |
| Pool | 1927 km² |
| Watercourse | |
| Source | |
| • Coordinates | |
| Mouth | Potomac |
| • Coordinates | |
| Location | |
| A country |
|
| Regions | Maryland , PA |
 - source  - mouth | |
The Monokashi Basin is 1,927 km², Pennsylvania accounts for 25%, the rest is in Maryland. The largest city in the basin is Frederick . Most of the basin is used for agriculture; the river, especially its lower course, is polluted from effluents containing fertilizers, manure and pesticides. However, Monokashi is officially considered the "wild and picturesque river" ( Maryland Wild and Scenic River).
One of the local attractions is the aqueduct through Monokashi , through which the Chesapeake - Ohio canal passes over the river.
In 1864 , during the Civil War , an important battle took place on the shores of Monokashi, the so-called "battle that saved Washington ."