The town is named after the Poesten Kill, an important stream in the area.

The other, an important stream with countless smaller tributaries, lapses toward the west.

Flint Creek - An important stream flowing through the town.

Mud Creek is an important stream flowing through the town.

Mud Creek is an important stream in the town.

South Sandy Creek is an important stream flowing through the north part of the town.

Elk Creek - An important stream flowing out the south of the town.

Another important stream was that of the Gala Water.

It, and particularly its tributaries, are important streams for whitewater enthusiasts.

The community takes its name from an important local stream.