Very little of the catchment is cleared so the stream system and the lake are in almost pristine condition.

Kentucky's of streams provides one of the most expansive and complex stream systems in the nation.

In addition, channelization and levee construction modify the natural hydrology of a stream system.

Very little direct environmental research or observation of tidal stream systems exists.

The site is at the headwaters of a small stream system supporting other examples of the community type.

Water enters the lake in two major stream systems, one entering the lake from the north, the other from the southwest.

This approach has led to overexploitation of stream systems.

The district is the basic geographical unit of pollution control and usually contains one or two river or stream systems.

However, it is a very tolerant species and can be found in almost any stream system with adequate food, leading to it widespread distribution.

Such stream systems are said to be braided.