Why are you removing the silt & sand?

When the massive sediment flow entered the river in 1998, its aquatic life was immediately imperiled; including, a large fish kill from abraded and plugged gills, and mussel and macro-invertebrate colonies were rapidly buried under the silt and sand. This hyper-concentrated flow (> 60% solids) deformed and buried the gravel bottom, filled the deep pools and cuts with silts and sand, and reduced connectivity to the underlying aquifer by plugging the hyporheic pores. The filling of the main thalweg with sediment also initiated catastrophic bank erosion, and over the next several years the Fawn’s banks and trees toppled into the stream. The result was a wide, shallow, slowed, warmed, and mud-choked river with anoxic conditions at the benthic interface, algal blooms, and advancing colonization by invasive aquatic vegetation prevalent throughout.

How many years did it take from the initial event to the start of restoration efforts on Fawn River?

The riparian landowners sought funding for 13 years for restoration of the Fawn River, which was finally accomplished in 2011, resulting in the founding of the Fawn River Restoration and Conservation Charitable Trust.

Why did you choose the Sand Wand™ technology for the restoration of Fawn River?

Operational choices were dictated by the decision not to use heavy equipment in the river, and riparian corridor. This led to selection of the low impact, man operated, Sand Wand™ technology from Streamside Environmental, LLC. The Sand Wand™ allows the operator to selectively jet and suction fine material within an enclosed shroud and pump the slurry out of the riparian corridor to dewatering pits located on former agricultural fields. Gravel and cobble are all left in place with the Sand Wand™ system.

Learn more about the Sand Wand™ Technology →

Why was the new design element of LWD structures implemented?

The LWD installations stabilize the depositional areas and prevent those materials being eroded back into the stream. They also provide capacity for capture of additional sediments moving thorough the system as it adjusts to the restoration efforts.  All of which keeps the cleaned cobble clean, and enhances the river’s recovery of native geomorphology, including the ability to self-cleanse.

Is the Fawn River Trust available to help my stream restoration project?

Yes! We hope to expand our efforts beyond Fawn River and help individuals or organizations achieve the same level of success with our unique approach.  Contact us or fill out the form below to request a consultation or schedule a site visit.

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