GREAT LAKES COMMISSION - GREAT LAKES BASIN SOIL EROSION GRANT PROJECT

WORK PLAN FOR LARGE WOODY DEBRIS MANAGEMENT FOR SEDIMENT CONTROL (GLC Grant No. 13-06-09)

TASK 1: PROJECT MANAGEMENT
This task includes project coordination with the Lenawee County Drain Commissioner (LCDC) and support for Great Lakes Commission grant reporting. This includes a project kick-off meeting with the LCDC and coordination as necessary for completing the project. JFN will provide summaries of work completed and the project final report for the GLC grant. JFN will also provide a press release summarizing the project outcomes. Subtasks include:

TASK 2: GEOMORPHOLOGY ASSESSMENT
A geomorphology assessment will be performed before and after the log jam removal. The assessment will include determination of channel shape, bed slope, flows, velocities, shear stresses, bed material size, water surface elevations both upstream and downstream of the log jams and the possible creation of a “clear- water condition”. A “clear-water” condition is the consequence of some process or structure in a channel that robs downstream reaches of an equilibrium level of suspended sediment. In a channel without some baseline suspended sediment, the potential degree of bed and bank erosion increases. The geomorphology evaluation and assessment report will be prepared within three months after award notification (start date is assumed to be July 2006). One year later a follow-up bank stabilization and geomorphology assessment will be undertaken to evaluate project success. The comparison of pre- and post-removal conditions will be included as a chapter in the project final report.

TASK 3: MDEQ LWD POLICY APPLICATION
The Blissfield logjam problems have prompted the Michigan Department of Environmental Quality to prepare a draft statewide policy on LWD management. The policy will include a LWD problem and benefits evaluation, a decision process and alternatives analysis and removal recommendations. The Blissfield log jam presents an excellent test case for evaluation via the draft MDEQ LWD policy.
The Blissfield jam will be subjected to the policy decision process, alternatives analysis and removal recommendations. In this case, the existing and future loss of sediment and private land and the threat of catastrophic jam failure necessitate removal. The MDEQ has agreed to help with application of the policy to this site and in return lessons learned on this site will inform further policy refinements.

TASK 4: LOG JAM REMOVAL
A log jam removal plan, a set of specifications for the log jam removal and permit
applications will be prepared by JFN for the LCDC. This plan will be used by the
LCDC for bidding purposes and contractor selection.

The log jam removal plan will include removal and a series of downstream measures to catch dislodged material and recommendations for re-using or disposing of the LWD. Some of the LWD will be used to construct a crib wall and log revetments to stabilize the banks. The LCDC will publicly bid the project and seek qualified contractors who have proper insurance and bonds to undertake the work. The LCDC will oversee the removal and bank stabilization work. The log jam plan and specifications will be prepared three months following the geomorphology assessment, approximately January 2007. Bidding and award would follow in spring 2007, with log jam removal and bank stabilization occurring in summer 2007. Subtasks include:

GREAT LAKES COMMISSION - GREAT LAKES BASIN SOIL ERROSION GRANT PROJECT WORK PLAN FOR LARGE WOODY DEBRIS MANAGEMENT FOR SEDIMENT CONTROL (GLC Grant No. 13-06-09)

	1998 and 2005 Aerial Comparison of Log Jam (Wide Angle) Large JPEG's With Comments Without Comments
1998 and 2005 Aerial Comparison of Log Jam (Close in) Large JPEG's With Comments Without Comments

Downloads

Keeping it on the Land: Announcing the 2006 Great Lakes Basin Program Projects
Large Woody Debris and Sediment Management Project Results