Download or read book Fish Passage in Streams written by Elizabeth Cotterell and published by . This book was released on 1998 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fish Migration and Fish Passage written by Willis A. Evans and published by . This book was released on 1974 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fish Habitat in Freshwater Streams written by and published by UCANR Publications. This book was released on with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Whangarahi River Survey Coromandel 2008 written by Eben Wilson and published by . This book was released on 2009 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fish Passage Through Dams in Large Temperate Floodplain Rivers written by and published by . This book was released on 2001 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fish Passage Through Culverts written by Calvin O. Baker and published by . This book was released on 1990 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book National Fish Passage Program written by National Fish Passage Program (U.S.) and published by . This book was released on 2003 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in Fish Passage Technology written by Mufeed Odeh and published by . This book was released on 2000 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Overview Assessment of Fish Passage at Stream Crossings Within Selected Watersheds written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fish Passage at Stream Crossings written by and published by . This book was released on 2009 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fish Passage Improvement in California s Watersheds written by Fish Passage Forum and published by . This book was released on 2005 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Assessment of Fish Passage Conditions at Stream Crossings Associated with the State Road System on the Seward Peninsula written by David B. Ryland and published by . This book was released on 2008 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Where roads intersect streams, crossing structures can become barriers to fish passage significantly affecting fish populations by delaying, impeding, or blocking normal movements. Unrestricted movement through stream systems is necessary for anadromous and resident fish species of all age classes and life stages to maintain access to spawning, rearing, and over-wintering habitats, which are essential to maintaining viable populations. Results of stream crossing inventories in the Pacific Northwest and Alaska suggest that a majority of culverts in fish-bearing waters obstruct normal fish movements to varying degrees. The loss of freshwater habitat is often considered a central factor in the decline of wild fish stocks throughout the range of Pacific salmon. This study was undertaken to assess fish passage at stream crossings along state-maintained roads on the Seward Peninsula in northwestern Alaska. Approximately 74 percent of the stream crossings surveyed were categorized as barriers to juvenile fish; an additional 19 percent were categorized as potential barriers. At the majority of the crossings surveyed, culverts were found to constrict the stream channel and be too steep for juvenile fish passage. Steep gradient was the most common factor that contributed to any crossing being categorized as a barrier.

Download or read book Upstream Passage of Anadromous Fish Through Navigation Locks and Use of the Stream for Spawning and Nursery Habitat Cape Fear River N C 1962 66 written by Paul Ruffner Nichols and published by . This book was released on 1970 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Predicting Fish Passage Design Flows at Ungaged Streams in Eastern Washington written by Erik Robert Rowland and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fish Passage Technologies written by and published by Office of Technology Assessment. This book was released on 1995 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annual Fish Passage Report written by United States. Army. Corps of Engineers. North Pacific Division and published by . This book was released on 1958 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Innovations in Fish Passage Technology written by Mufeed Odeh and published by . This book was released on 1999 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Odeh (Conte Anadromous Fish Research Center) presents 13 contributions which explore the technical possibilities of constructing effective fish bypass systems for hydroelectric dams, especially those that are due for relicensing in the context of new regulations. The articles consist of case studies in the effectiveness of such techniques as surface bypass systems, modular inclined screens, hydroacoustic evaluation of fish entrainment patterns, surface collection, surface spill gates, and radio-tagging and radar tracking behavior evaluation strategies. Annotation c. Book News, Inc., Portland, OR (booknews.com).