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Book Fish Migration and Fish Passage

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:

Book Applied River Morphology

Download or read book Applied River Morphology written by David L. Rosgen and published by . This book was released on 1996 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Fish stream Crossing Guidebook

Download or read book Fish stream Crossing Guidebook written by and published by . This book was released on 2011 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book An Assessment of Fish Passage Conditions at Stream Crossings Associated with the State Road System on the Seward Peninsula

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.

Book Bay Resource Management Plan

Download or read book Bay Resource Management Plan written by and published by . This book was released on 2007 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Inventory and Assessment of Road stream Crossings for Aquatic Organism Passage with Recommendations for Culvert Design

Download or read book Inventory and Assessment of Road stream Crossings for Aquatic Organism Passage with Recommendations for Culvert Design written by Wesley Bouska and published by . This book was released on 2010 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: Improperly designed stream crossings may prohibit movement of stream fishes by creating physical or behavioral barriers and may alter the form and function of stream ecosystems. A mark-recapture and geomorphological study was conducted to evaluate fish passage and stream morphology at three types of vehicle crossings (compared to control sites) located on streams in the Flint Hills of Northeast Kansas. We investigated five concrete box culverts, five low-water crossings (concrete slabs vented by one or multiple culverts), and two single corrugated culverts. A total of 6,433 fish were marked April to May 2007 and 785 were recaptured June to August 2007. Fish passage occurred at all crossing types. Upstream movement of recaptured fish was higher for box culvert reaches (53%) than at controls (41%), but upstream movement of recaptured fish was higher at controls (41.1%) than at crossing reaches (19.1%) for low-water crossings. Control sites had more species in common upstream and downstream than did crossings. There was reduced overall abundance of fish upstream at low-water crossings, commonly percids and centrarchids. A comparison of channel and road crossing dimensions showed that box culverts and corrugated culverts would be more effective than low-water crossings at transporting water, sediments, and debris during bankfull flows, and providing fish passage at base flows. Upstream passage of Topeka shiner (Notropis topeka), green sunfish (Lepomis cyanellus), red shiner (Cyprinella lutrensis), and Southern redbelly dace (Phoxinus erythrogaster) was tested through three simulated crossing designs (box culverts, round corrugated culverts, and natural rock) across 11 different water velocities (0.1 m/s to 1.1 m/s) in an experimental stream. Upstream movement did not differ among designs, except natural rock crossings had lower movement than box or corrugated culverts for red shiners. A greater proportion of Topeka shiners moved upstream at higher velocities. These results suggest that crossing type affects fish passage and the morphology of the stream, although water velocity in different crossing designs alone may not be a determining factor in fish passage. Low-water crossings had the greatest impact on fish community and movement, but barriers to fish movement are likely caused by other variables (e.g. perching). Use of properly designed crossing structures has great promise in conserving critical stream habitat and preserving native fish communities. All crossings that were evaluated passed fish, although they may have passed around culverts during high water. None of the culverts tested appeared to be complete barriers. The design of this study did not allow us to determine the exact times when passage occurred, nor do we understand the degree of passage necessary (i.e., can fish populations be sustained by seasonal fish passage and connectivity?) to maintain a healthy and diverse fish population.

Book Elliott State Forest

Download or read book Elliott State Forest written by and published by . This book was released on 2008 with total page 662 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Fish Passage Through Culverts

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.

Book Culvert Criteria for Fish Passage

Download or read book Culvert Criteria for Fish Passage written by and published by . This book was released on 2002 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Design for Fish Passage at Roadway stream Crossings

Download or read book Design for Fish Passage at Roadway stream Crossings written by Rollin H. Hotchkiss and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Cataloging and synthesizing existing methods for the design of roadway-stream crossings for fish passage began in January 2005 with an extensive literature review covering the topics of culvert design and assessment to facilitate fish passage. A survey was posted online to gather input from design professionals across the country, and a Culvert Summit Meeting was held in Denver Colorado from February 15-16, 2006, to allow presentation and discussion of state-of-practice design and assessment techniques. Following the Summit meeting, a Technical Advisory Committee was developed with individuals specifically knowledgeable in the topics of interest. Members were crucial in shaping and reviewing the direction of these guidelines. This document places current culvert design techniques into four categories based on design premise and objectives. These categories include: No Impedance techniques, which span the entire stream channel and floodplain; Geomorphic Simulation techniques, which create fish passage by matching natural channel conditions within the culvert crossing; Hydraulic Simulation techniques, which attempt to closely resemble hydraulic diversity found in the natural channels through the use of natural and oversized substrate; and Hydraulic Design techniques, which may utilize roughness elements such as baffles and weirs to meet species specific fish passage criteria during periods of fish movement. Preliminary chapters covering the topics of fish biology and capabilities, culverts as barriers, fish passage hydrology, and design considerations aid in the selection of appropriate design techniques based on hydraulic, biologic, and geomorphic considerations. A further section presents examples of design techniques fitting the defined design categories. Design examples and case histories for a selection of design techniques are presented next, and are followed by a discussion on construction, maintenance, monitoring, and future research needs.

Book Neuse River Basin Integrated Feasibility Report and Environment Assessment Final Report

Download or read book Neuse River Basin Integrated Feasibility Report and Environment Assessment Final Report written by United States. Office of the Assistant Secretary of the Army (Civil Works) and published by . This book was released on 2014 with total page 1694 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Proposed Land and Resource Management Plan

Download or read book Proposed Land and Resource Management Plan written by and published by . This book was released on 1987 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: