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Author: Dave Bressler

USGS StreamStats

StreamStats provides access to spatial analytical tools that are useful for water-resources planning and management, and for engineering and design purposes. The map-based user interface can be used to delineate drainage areas, get basin characteristics and estimates of flow statistics, and more. StreamStats Application Useful statistics are provided in the Watershed Characteristics Reports such as % watershed in carbonate rock, % imperviousness, % urban land, precipitation summary stats, and topographic characteristics. Like

Pollution intolerant Stonefly (Family – Chloroperlidae; Genus – Alloperla)

How to See a Stream: Part Two, Stream Monitoring and Impairment

What can one do to help a stream recover from pollution, protect a stream from degradation, or simply understand what the issues and risks are?

Autumn leaves in a flowing stream.

How to See a Stream: Part One, Stream Health Dynamics

Streams and the valleys they drain are complex environments. This complexity makes regulating, restoring, and protecting these aquatic systems a complicated process.