2007 Levee Vegetation Research Symposium

Overview

The Vegetation Challenge - A scientific and engineering examination of managing vegetation along California's Central Valley Levees that protect urban and rural areas from devastating floods - Agenda

The Vegetation Challenge symposium was held August 28-29, 2007 in Sacramento, California and the Sacramento Convention Center. This symposium was held in response to the release of US Army Corps of Engineers (Corps) draft white paper regarding maintenance standards for vegetation on levees. The requirements contained in the draft white paper called for the removal of trees and shrubs along the waterside and landside of Corps program levees nationwide, including 1600 miles of Central Valley levees, to be in compliance with existing standards.   Read More

  • DAY 1 PROCEEDINGS
  • DAY 2 PROCEEDINGS

DAY 1 PROCEEDINGS - Agenda - Audio - Transcript


THEME: What is the issue, and why is it important?

- Moderator Remarks and Opening Speaker Introductions - Dr. Emir Macari - Bio - Audio - Transcript

- Welcome - Mayor Heather Fargo - Bio - Audio - Transcript

- Corps Perspective - Steve Stockton - Bio - Audio - Transcript

- California Perspective - Dr. Les Harder - Bio - Audio - Transcript

 - Local Perspective - Stein Buer - Bio - Audio - Transcript

- Corps’ draft ‘White Paper’ on levee vegetation management guidelines & driving factors - David Pezza - Bio - Presentation - Audio - Transcript

- Overview of compliance issues w/ draft ‘White Paper’ guidelines on vegetation management - Keith Swanson - Bio - Presentation - Audio - Transcript

- FEMA 534. Tech. Manual for Dam Owners - Impacts of Plants on Earthen Dams - Bill Bouley - Presentation - Audio - Transcript

- Root architecture, root response to soil conditions, levees & river hydrology - Dr. Alison Berry - Bio - Presentation - Audio - Transcript

- Geotechnical stability, levee seepage & piping and the effects of woody vegetation - Dr. Donald Gray - Bio - Presentation - Audio - Transcript

- Literature review of vegetation in flood control - Dr. Maureen Corcoran - Bio - Presentation - Audio - Transcript

- Ground squirrel & other mammal relationships/interactions with vegetation on levees - Dr. Dirk Van Vuren - Bio - Presentation - Audio - Transcript

- Role of vegetation in bank stability & revetments - Dr. Douglas Shields - Bio - Presentation - Audio - Transcript

- Tree windthrow & contributing factors - Dr. Chris Peterson - Bio - Presentation - Audio - Transcript

- Vegetation effects on river hydraulics, floodway conveyance & velocity response - Dr. Johannes DeVries - Bio - Presentation - Audio - Transcript

- Delta levee bank erosion, seasonal levee/bank changes, effects of wind waves & boat wakes - Dr. Douglas Sherman - Bio - Presentation - Audio - Transcript


THEME: What have we learned from past experiences & scientific research?

- New Orleans; Current vegetation removal activities, driving factors & technical basis - Michael Stout - Bio - Presentation - Audio - Transcript

- Dutch experience: Scientific basis for Dutch levee vegetation policy - Clara Spoorenberg - Bio - Presentation - Audio - Transcript

- German experience: Role of woody vegetation on dykes in Bavaria - Dr. Ronald Haselsteiner - Bio - Presentation - Audio - Transcript

- Missouri River 1993 - Woody vegetation on levees & woody corridors - Dr. John Dwyer - Bio - Presentation - Audio - Transcript

DAY 2 PROCEEDINGS - Agenda - Audio - Transcript


THEME: Regional perspective on levee conditions, risk factors, & consequences of implementing Corps’ vegetation guidance & levee certification standards.

- Welcome and Purpose of the Day - Dr. Emir Macari

- Origins and state of Central Valley Flood Control Project - Joe Countryman - Bio - Presentation - Audio - Transcript

- Natural history and state of Central Valley river systems - Steve Chainey - Bio - Presentation - Audio - Transcript

- California experience - flood fighting, levee inspection & repair - Rick Burnett - Bio - Presentation - Audio - Transcript

- US Army Corps Sacramento District - LAR levee section pilot study results - Meegan Nagy - Bio - Presentation - Audio - Transcript

- Overview of the Sacramento River & levees in the metropolitan area. SAFCA’s study of Sacramento region levee vegetation & levee conditions – survey results, risk factors & issues for Corps’ vegetation guidance - Audio
Co-Presenters: Ed Wallace - Bio - Presentation - Transcript, Ken Rood - Bio - Presentation 1 - Presentation 2 - Transcript


THEME: Policy solutions based on applied engineering and science-a practical vision for the future & those living behind the levee. Costs vs benefits, multi-use values, & appropriate standards for vegetation removal along river levees.

- Applying the engineering and science to solutions - Audio
Moderator: Tom Gohring - Bio - Panelists: Dr. Alison M. Berry - Bio, Bill Bouley, Dr. Maureen K. Corcoran - Bio,
Dr. John P. Dwyer - Bio, Dr. Donald H. Gray - Bio, Dr. Ronald Haselsteiner - Bio, Dr. Chris J. Peterson - Bio,
Dr. Douglas J. Sherman - Bio, Dr. F. Douglas Shields - Bio

- Risk & uncertainty/factors of safety/costs/benefits of implementing white paper - Audio
Moderator
: Dr. Ramzi Mahmood - Bio - Panelists: Stein Buer - Bio, Scott Flint, Dr. Les Harder - Bio, Andy Harkness - Bio,
Tracy Hendren - Bio, Mike Hoover,
Dr. Martin McCann - Bio

- Where do we go from here? Vision of the ultimate goal - what are critical needs? What policies would be appropriate, and what flexibility is appropriate for policy implementation and consequences?  - Audio
Moderator:  Dr. Emir Macari - Bio - Panelists: Michael Hardesty - Bio, Ed Hecker - Bio, Butch Hodgkins - Bio,
Maria Rea - Bio, Ron Stork - Bio, Keith Swanson - Bio, Tim Washburn - Bio


Closing Thoughts

- Local Perspective - Stein Buer - Bio

- California Perspective - Dr. Les Harder - Bio

- US Army Corps of Engineers Perspective - Steve Stockton - Bio

USACE CVFPB CA DWR SAFCA