Molly’s Falls Channel Relocation

Cabot and Danville, Vermont | Vermont Agency of Transportation

The Cabot-Danville US 2 Segment 1 highway stormwater improvements included relocating a reach of Molly’s Falls Brook. The project required site inspection coordinated with the Vermont Agency of Natural Resources District Fisheries Biologist, Stream Alteration Engineer, and VTrans representatives. To relocate the brook, D&K collected site data and developed a design utilizing hydraulic engineering and natural channel design principles. 

Markets:

Project Elements

• Developed topographic basemap of cross sections at 25-ft intervals
• Relocated 200 ft of brook
• Utilized HEC-RAS model to predict 100-year level water surface elevations
• Designed stone cross vanes to mimic those naturally present
• Provided a low-flow pilot channel, promoting sustaining conditions for aquatic species
• Selected trees to preserve as mature riparian cover for new channel