Protection of streams is critical to maintaining water quality. In Pennsylvania quality standards for streams have been set in Chapter 93 of the Pennsylvania Code. Below is a map of the Michaux State Forest showing streams going through the forest.
Clipping the streams to the forest boundary shows how much of the forest covered by waterways. The following map shows 200 foot buffers. 
A detailed view shows the relative difference in size of 100 foot, 150 foot, and 200 foot buffers.
At first I thought that increasing the buffers would have a large increase in the area covered, As the following table shows the increase in area is linear with the increase of the size of the buffer. The table also shows the total area of the forest and the total length of the streams.
