Author: Douglas L. KanePublisher:
ISBN:
Category : Culverts
Languages : en
Pages : 252
Book Description
A Hydraulic Evaluation of Fish Passage Through Roadway Culverts in Alaska
Author: Douglas L. KanePublisher:
ISBN:
Category : Culverts
Languages : en
Pages : 70
Book Description
Fish Passage Through Culverts
Author: Calvin O. BakerPublisher:
ISBN:
Category : Culverts
Languages : en
Pages : 84
Book Description
The success of fish migration through culverts is dependent on the swimming ability of the fish and the hydraulic conditions of the culvert. Properly designed and constructed culverts can minimize the impact on fish passage. Because culverts are typically more economical than bridges, it is appropriate to evaluate when to use culverts and to predict the effects of such culvert installations. During the consideration of alternatives for structures for fish passage, culverts should not be automatically eliminated. This publication has tried to examine the aspects of culvert design and operation relative to the existing information that has been published in previous studies. Ideally, a culvert installation should not change the conditions that existed prior to that installation. This means that the cross-sectional area should not be restricted by the culvert, the slope should not change, and the roughness coefficients should remain the same. Any change in these conditions will result in a velocity change which could alter the sediment transportation capacity of the stream. A truly successful culvert design would include matching the velocities of the fish's swimming zone in the culvert to the swimming capacity of the design fish. Unfortunately, not enough research has been completed to make this an acceptable criterion of culvert design. This approach is preferred because it is easier to reduce the velocities in the swimming zone by increasing the boundary roughness than it is to reduce the mean velocity of the entire culvert. This publication contains some relatively simple guidelines which can reduce the installation problems of culverts in streams containing migrating fish when combined with the expertise of an experience fish biologist, engineer, and hydrologist.
A Hydraulic Evaluation of Fish Passage Through Roadway Culverts in Alaska
Author: Douglas L. KanePublisher:
ISBN:
Category : Culverts
Languages : en
Pages : 252
Book Description
Safe Passages
Author: Jon P. BeckmannPublisher: Island Press
ISBN: 1597269670
Category : Science
Languages : en
Pages : 419
Book Description
Safe Passages brings together in a single volume the latest information on the emerging science of road ecology as it relates to mitigating interactions between roads and wildlife. This practical handbook of tools and examples is designed to assist individuals and organizations thinking about or working toward reducing road-wildlife impacts. The book provides: an overview of the importance of habitat connectivity with regard to roads current planning approaches and technologies for mitigating the impacts of highways on both terrestrial and aquatic species different facets of public participation in highway-wildlife connectivity mitigation projects case studies from partnerships across North America that highlight successful on-the-ground implementation of ecological and engineering solutions recent innovative highway-wildlife mitigation developments Detailed case studies span a range of scales, from site-specific wildlife crossing structures, to statewide planning for habitat connectivity, to national legislation. Contributors explore the cooperative efforts that are emerging as a result of diverse organizations—including transportation agencies, land and wildlife management agencies, and nongovernmental organizations—finding common ground to tackle important road ecology issues and problems. Safe Passages is an important new resource for local-, state-, and national-level managers and policymakers working on road-wildlife issues, and will appeal to a broad audience including scientists, agency personnel, planners, land managers, transportation consultants, students, conservation organizations, policymakers, and citizens engaged in road-wildlife mitigation projects.
Fish Passage Through Retrofitted Culverts
Author: Relevant Literature for an Evaluation of the Effectiveness of the Alaska Forest Resources and Practices Act
Author: Water/road Interaction Technology Series
Author: Aquatic Sciences and Fisheries Abstracts
Author: HRIS Abstracts
Author: National Research Council (U.S.). Highway Research Information ServicePublisher:
ISBN:
Category : Highway engineering
Languages : en
Pages : 906
Book Description
Author: