The Steep Hill Brook is a tributary of the Six Mile Run
. It is found in central and north central Franklin
Park, a division of Somerset
County, New Jersey
in the United States
. Arrays of stalactites are grown under the bridge where Blackwells Mills Road crosses it.The Steep Hill Brook is a rather short stream. It only crosses one road, Blackwells Mills Road, where it is easily accessible on one side. It can be accessed by some trails in the woods too.
The Steep Hill Brook has many fish, as they prefer the oxygenated environment. There are several frogs in the slow moving places, although the fine gravel is less hospitable to them than mud.The streambed of the Steep Hill Brook is composed of fine reddish gravel in most places. Some shale cliffs may be found along its banks. This stream is generally medium-fast flowing and shallow. "Sandbars" formed by accumulation of the gravel are common.