Abstract: Session C  8:30 am (Back to Session C)
Designs That Drive the Success of Stream Mitigation Banks

Nathan Ober, PG
Civil & Environmental Consultants, Inc.
Crested Butte, Colorado

The fundamentals of stream restoration design can be complicated, and the execution of the plan a challenge.  Despite these impediments, cost effective and constructible stream restoration designs can be accomplished through rapidly evolving technologies.  Data acquisition with aerial and terrestrial LiDAR can produce economical but highly detailed information on existing conditions suitable for accurate designs.  The AutoCAD Civil 3D design platform creates three-dimensional natural channel designs that dynamically and inherently link the pattern, profile, and dimension of a stream, allowing a designer to make iterative changes with instantaneous and accurate three-dimensional updates.  GPS guided construction equipment optimizes the execution of the design by taking the AutoCAD drawings into the cabin of the excavator minimizing error and reducing construction cost.  Other technologies such as Small Unmanned Aerial Mapping Systems (sUAS) or drones have provided opportunities to improve designs and document as-built conditions.  In conclusion, a well-planned design using these technologies can expedite the permitting process, provide cost-effective restoration, and improve ecosystem functions.