Low-water crossings : geomorphic, biological, and engineering design considerations / Kim Clarkin [and three others].

Format:

Book

Government document

Author/Creator:

Clarkin, Kim, author.

Contributor:

Technology & Development Program (U.S.), issuing body.

Language:

English

Subjects (All):

Fords (Stream crossings)--United States--Design and construction.

Fords (Stream crossings).

Fords (Stream crossings)--Environmental aspects--United States.

Fords (Stream crossings)--Design and construction.

Physical Description:

1 online resource (xi, various numbered pages) : illustrations (chiefly color)

Place of Publication:

[San Dimas, Calif.] : U.S. Department of Agriculture, Forest Service, National Technology and Development Program, 2006.

Summary:

Low-water crossings are road-stream crossing structures designed to be overtopped by high flows or by debris- or ice-laden flows. They can be desirable alternatives to culverts and bridges on very low-volume roads and trails, and they can offer substantial environmental advantages in some stream environments. They are useful, for example, where streamflow is highly variable and large amounts of woody debris pose a risk to crossing structures. This publication reviews both the advantages and disadvantages of different low-water crossing structures in various stream environments and illustrates situations in which low-water crossings may be the optimal choice of crossing structure. The publication aims to provide multidisciplinary teams planning and designing road-stream crossing structures with answers to questions about where and how to best use overtoppable crossing structures. The publications four objectives are as follows: (1) To address how low-water crossing structures affect stream functions and stability in various environments; (2) To provide guidance for selecting low-water crossing structures that minimize disruption of channel processes and habitats; (3) To summarize basic design parameters and requirements; and (4) To examine a wide range of field examples that illustrate the performance, problems, and advantages of different types of low-water crossings. This publication is unique because it specifically deals with providing for aquatic organism passage and minimizing damage to channel stability and habitats. It focuses on the geomorphic and road management conditions that favor using low-water crossings as a means of minimizing negative effects to structures, stream channels, and aquatic habitats. It provides guidance on locating, selecting, and designing low-water crossings to fit the channel so they are less likely to obstruct stream functions, damage the aquatic system, and sustain structural damage during floods.

Notes:

"October 2006."

"0625 1808-SDTDC"--Cover.

"2500-Watershed, soil & air management"--Cover.

"7700-Transportation management"--Cover.

Includes bibliographical references (pages 7.1-7.8).

Description based on online resource; title from PDF title page (USDA FS, viewed April 15, 2025).

Other Format:

Print version: Low-water crossings: geomorphic, biological, and engineering design considerations.

OCLC:

438824214