• Upstream Border: Westford Border, east. of sand & gravel pits
• Downstream Border: Nashoba Brook junction, Rte 27, South St, Nashoba Club

Trash: Butter Brook, near Rte. 27, NBBUT. One of the stream areas cleaned up by the Acton Stream Teams on September 12, 1998.

For the most part the stream passed through typical New England woods. It was generally shaded with a few open areas. The stream was shallow and indistinct in many areas with evidence of having overflowed its banks in several places. Skunk cabbage abounds, indicating wet areas. Mud and brush made it difficult to follow precisely in places, particularly west of Rte. 27 upstream. No drainage from pipes into the stream was observed, however, there appears to be a drainage ditch west of Rte. 27 near the Westford line. This area should be revisited. The most significant trash, with the exception of discarded railroad batteries, was found immediately adjacent to Rte. 27, consisting of typical "road debris".