Second River

The Second River, or Watsessing River, is the second main tributary of the Passaic River encountered while travelling upstream from its mouth at Newark Bay.

From its source in West Orange to the Passaic, it is approximately 5 mi long.
The Second River passes generally easterly through the towns of Orange and East Orange, where it is joined by Wigwam, Parrow, and Nishuane Brooks, then turns slightly to the north and enters the Bloomfield. Here, at Watsessing Park, it is joined by Toney's Brook.

After leaving Bloomfield, it enters the town of Belleville (which was, early in its history, also named "Second River"), and turns slightly to the south. Finally, it joins the Passaic River, on its way to Newark Bay.

In the 19th and early 20th centuries, the Second River supported a sizable industrial complex of mills and factories.