Repairing Entrenched, Incised and Degraded Urban Streams - Techniques and Case Studies

Presented by: John A McCullah

Education Track: Wetland, Stream Bank, and Shoreline Restoration
Course Length: Full Day
Credit: 7 Professional Development Hours
Technical Level: Intermediate to Advanced

Urbanization, with its associated decrease in overall infiltration and increases in impermeable surfaces, along with a proliferation of hydrologic and hydraulic sciences that get the water off the site, frequently result in incision of the associated urban streams. Urban stream entrenchment, incision, and degradation are a high-priority, national issue leading to poor water quality, loss of riparian function, loss of aquatic habitat and costly threats to infrastructure. The new provisions of the Clean Water Act are an attempt to deal with these issues. Post-construction BMPs and revegetation requirements, along with LID and other reductions of hydromodification during development and construction are now required as part of the NPDES program. This course will deal with some of the tools needed to design and build naturally-functioning stream, river, and creek reaches. The material will be presented with the extensive use of Case Studies. John McCullah will present projects utilizing Bioengineering and Environmentally-Sensitive techniques from US, and Canada, to New Zealand, some spanning over 15 years. In 2005, the Transportation Research Board and National Cooperative Highway Research Board published NCHRP Report 544 Environmentally Sensitive Channel and Bank Protection Methods Report 544 Environmentally Sensitive Channel and Bank Protection Methods. This report, authored by J. McCullah, D. Gray, and D.F. Shields was published on CD and includes over 50 Techniques, from re-directive Rock Vanes and Bendway Weirs to Vegetated Rip Rap and Longitudinal Stone Toe with Live Siltation. It incorporates design considerations, construction specifications and detailed drawings. An Educational Version of this design guidance document will be provided free to all class attendees.

Learning Objectives:

  1. Basic Fluvio-geomorphology, stream form and process, Lanes equation, CEM etc.
  2. The NCHRP Report and current research.
  3. Environmentally-sensitive techniques.
  4. Redirective vs resistive.
  5. Case Studies and Dirt Time video clips to take you there.

Interested in this course? Please contact IECA Education at: | 303-640-7554

Presented by John A McCullah

John McCullah owns and operates Salix Applied Earthcare (Salix), a consulting firm located in Redding, California. Since 1994, the company has been implementing Erosion Control, Watershed Restoration, Bioengineering and Biotechnical Stream bank Stabilization projects, as well as developing educational materials and training programs for these disciplines. Mr. McCullah is a Watershed Geologist and CPESC #311.He has completed many projects, including biotechnical slope stabilization. John's career in Watershed Management has also involved forming Sacramento Watersheds Action Group (SWAG) allowing him to design and implement large-scale stream, road, and slope restoration projects. He has taught at Shasta College for 16 years and produces the Dirt Time video series. It has been said that "Dirt Time is the This Old House of erosion control"