How a stream looks and behaves can be a very complex balance of physical elements that in turn affect the chemical and biological aspects of that stream.

Natural stream design is a method of stream remediation and modification required as a result of various impacts to a natural system. These impacts include both natural and anthropogenic events. Historically, streams that interfered with landowners and infrastructure were dealt with using a variety of tools including bulldozers and rip rap. These efforts typically were aimed at keeping a stream in its channel, and from cutting away at streambanks. Natural Stream Design is the practice of working streams so that they:

• Function naturally
• Provide suitable habitat
• Maintain stability over time

Projects are often extremely challenging and require specific expertise in the following areas:

• Hydraulic engineering
• Aquatic ecology
• Fluvial geomorphology

Review the Examples page to see descriptions of project sites throughout the Upper Susquehanna River watershed.