Compliance / Public Involvement
Tamarisk Management and Tributary Restoration
Reports - Tamarisk Eradication and Restoration of 63 Tributaries
These reports are available as a PDF file and as a text file. PDF files retain the look and feel of the original document (including typography, page layout, and graphics), text files do not.
 |
The PDF file can be viewed with Adobe Acrobat Reader (version 5 or newer). If you plan on printing the file, it may print faster if you download it to your computer.
- To view a PDF in your browser window, click on the file link and the Acrobat Reader plug-in will automatically load and display the file.
- To download a PDF to your computer, right-click on the PDF link and choose the "Save Link/Target As" option from the drop-down menu. After saving the file to your computer, click on its alias/icon and Acrobat Reader will launch and open the PDF for viewing and/or printing.
|
|
The text file can be viewed within your browser by clicking on the link below. Or you can download the file (to download the file, right-click on the link and choose the "Save Link/Target As" option from the drop-down menu) and then view it in any word processing program.
|
Tamarisk Site Bulletin
March 2006
- PDF file - Site Bulletin Tamarisk Management and Tributary Restoration - 206kb
Finding of No Significant Impact
July 2002
- PDF file - FONSI Tamarisk Management and Tributary Restoration - 212kb
Environmental Asssessment
February 2002
Tamarisk (Tamarix sp.), commonly known as salt cedar, is an exotic (nonnative) shrub or tree that grows in dense stands along rivers and streams across the West. Tamarisk reached the Grand Canyon area during the late 1920s and early 1930s, becoming a dominant riparian zone species along the Colorado River in 1963 following completion of Glen Canyon Dam. These prolific nonnative shrubs displace native vegetation and animals, alter soil salinity, affect water quality and increase fire frequency. Once established in an area, it typically spreads and persists. Preliminary surveys conducted in 157 Grand Canyon National Park side canyons indicate that tamarisk is in the early stages of invading tributaries from the main river corridor. Arresting the tamarisk spread from the river into side canyons is desirable while control is still feasible. No action was considered as one alternative. One action alternative was considered. Alternative B includes the use of mechanical removal, lance injection of Garlon, hack and squirt method, cut stump method and basal bark application of Garlon herbicide. Public Comment period for the EA ended 1 April 2002.
- PDF file - EA Tamarisk Management and Tributary Restoration - 1.6mb