Shop

OTREC-RR-11-19

eBook (PDF), 124 Pages
This item has not been rated yet
Price: Free
Streambeds provide for the necessary habitats and spawning cycles of a healthy fish population. Oregon law requires underwater hydraulic structures to provide proper fish passage. Increasingly stringent regulations apply to fish passageways, and designers must consider a range of flows to accommodate fish movement and avoid structural failure. Fish passages, culverts or bridges, are built where roads cross streambeds. “Roughened channels” technique re-creates streambeds with the hydraulics necessary for adequate fish passage. This report examines long-term success factors for implementation of fish passageways, especially in the construction phase, and examines whether failures are due to inadequate range and mix of material gradation; unexpected water velocity; or inadequate mixing or compaction of materials during construction. Other factors may include the relationship of downstream slope to structure slope, well-graded fine soil materials in channel fill, and frequent... More > site visits.< Less
Available in PDF Format

Ratings & Reviews

Log in to review this item
There are no reviews for the current version of this product
Refreshing...
There are no reviews for previous versions of this product
Refreshing...

Product Details

Published
October 26, 2011
Language
English
Pages
124
File Format
PDF
File Size
14.44 MB

Formats for this Ebook

PDF
Required Software Any PDF Reader, Apple Preview
Supported Devices Windows PC/PocketPC, Mac OS, Linux OS, Apple iPhone/iPod Touch... (See More)
# of Devices Unlimited
Flowing Text / Pages Pages
Printable? Yes
Report This Content to Lulu >

Moderation of Questionable Content

Thank you for your interest in helping us moderate questionable content on Lulu. If you need assistance with an order or the publishing process, please contact our support team directly.

How does this content violate the Lulu Membership Agreement?

Keywords

Listed In

More From David Sillars