ELWd® (pronounced "elwood") structures
are engineered alternatives to native large woody debris for
rehabilitation or enhancement of aquatic and upland habitat.
structures are assembled on-site from small diameter poles or
logs to make large diameter organic structures that satisfy the
functional requirements of native large woody debris.
quantities of native large woody debris are becoming rare and
increasingly expensive to acquire. Native large woody debris often
weigh 3,000 to 10,000 pounds, necessitating use of large cranes
and heavy equipment to install habitat features.
structures are fabricated from readily available small-diameter
thinnings, merchandiser scrap or tops left over from harvest.
Individual poles for ELWd® structures weigh
80 to 300 pounds depending on structure length. A small work crew
can pack into a site all materials and tools necessary to assemble
and install ELWd® structures.
from the ELWdSM division of of Forest Concepts, LLC.
and local distributors provides an economical and functionally
viable alternative for hydrologists and habitat specialists faced
with difficult sites and limited availability of native large
possible to manufacture ELWd® structural
components in the field with portable power and hand tools. However,
we recommend that structural components be regionally manufactured
and delivered to project sites as kits.
Open or Save these .pdf files documenting case histories, dimensions
and drawings for ELWd Habitat Enhancement and Watershed Restoration
Demonstrates the benefits of adding woody habitat features
to restored wetlands.114k.
Habitat Structures restore habitat in burned-over areas, jump-starting
populations of prey species. 397k.
manufacture of ELWd Wildlife Habitat Logs from fireline debris
in Wenatchee National Forest.1.29M.
Large Woody Debris Structures- Standard products and specifications
for upland wildlife habitat structures, dimensions, drawings.50k.
to download the free Acrobat® Reader software.
information visit the ELWd
Systems Web Site.