Grogen Branch is a 1.70 mi (2.74 km) long 1st order tributary to the Ararat River in Patrick County, Virginia.

Grogen Branch rises on the south slope of Groundhog Mountain in Patrick County about 3 miles south-southwest of the peak of Groundhog Mountain.

Grogen Branch then flows south to join the Ararat River about 1 mile northwest of Ararat, Virginia.

[2] Grogen Branch drains 0.58 square miles (1.5 km2) of area, receives about 51.3 in/year of precipitation, has a wetness index of 308.29, and is about 71% forested.

This article related to a river in Virginia is a stub.