A network of streams through the Borough which provides an efficient drainage system eventually entering Troy Brook and the Whippany River Basin. Since the streams, with one exception, have small watersheds within the Borough, there are few flooding problems. In addition to their utility as drains, the streams add interesting and attractive features to the many properties through which they pass. The Borough government is aware of the environmental advantages of streams and is striving to maintain them by means of conservation easements, physical maintenance and refusal to sell any borough-owned properties containing wetlands of any sort. Most of the larger Borough-owned properties with wetlands have been dedicated as parkland.

Water temperature variation can significantly alter stream ecology and result in the loss of organisms important to natural processes of cleansing and purification. Thus, it is of overriding importance to preserve the natural tree cover along our streams.