Download or read book Preliminary Assessment of Channel Stability and Bed material Transport Along Hunter Creek Southwestern Oregon written by U.S. Department of the Interior and published by CreateSpace. This book was released on 2014-03-30 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes a reconnaissancelevel assessment of channel condition and bedmaterial transport relevant to the permitting of instream gravel extraction in Hunter Creek, a coastal stream draining to the Pacific Ocean south of Gold Beach, Oregon (fig. 1, next page). The assessment is based on a review of existing datasets (such as bridge-inspection surveys, watershed analyses, and gravel-extraction records), repeat delineation of bar and channel features from aerial photographs, and field observations and particle-size measurements made during July 2010. Findings from these multiple datasets and observations were used to (1) assess the vertical stability of the Hunter Creek channel and identify locations where the channel may be incising, aggrading, or stable and (2) identify key datasets and issues that are relevant to understanding channel condition, bed-material transport, and potential effects of instream gravel extraction on Hunter Creek.
Download or read book Preliminary Assessment of Channel Stability and Bed material Transport Along Hunter Creek Southwestern Oregon written by Krista L. Jones and published by . This book was released on 2011 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preliminary Assessment of Channel Stability and Bed material Transport Along Hunter Creek Southwestern Oregon written by Krista L. Jones and published by . This book was released on 2011 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preliminary Assessment of Channel Stability and Bed material Transport in the Rogue River Basin Southwestern Oregon written by U.S. Department of the Interior and published by CreateSpace. This book was released on 2014-03-30 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes a preliminary assessment of bed material transport, vertical and lateral channel changes, and existing datasets for the Rogue River basin which encompasses 13, 390 square kilometers along the south wester Oregon coast.
Download or read book Preliminary Assessment of Channel Stability and Bed material Transport in the Coquille River Basin Southwestern Oregon written by U.S. Department of the Interior and published by CreateSpace. This book was released on 2014-03-30 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes a preliminary study of bed-material transport, vertical and lateral channel changes, and existing datasets for the Coquille River basin, which encompasses 2,745 km2 (square kilometers) of the southwestern Oregon coast.
Download or read book Preliminary Assessment of Channel Stability and Bed material Transport in the Rogue River Basin Southwestern Oregon written by Krista L. Jones and published by . This book was released on 2012 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preliminary Assessment of Channel Stability and Bed material Transport in the Coquille River Basin Southwestern Oregon written by Krista L. Jones and published by . This book was released on 2012 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preliminary Assessment of Channel Stability and Bed Material Transport in the Tillamook Bay Tributaries and Nehalem River Basin Northwestern Oregon written by U.S. Department of the Interior and published by CreateSpace. This book was released on 2014-03-30 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes a preliminary study of bed-material transport, vertical and lateral channel changes, and existing datasets for the Tillamook (drainage area 156 square kilometers [km2]), Trask (451 km2), Wilson (500 km2), Kilchis (169 km2), Miami (94 km2), and Nehalem (2,207 km2) Rivers along the northwestern Oregon coast.
Download or read book Preliminary Assessment of Channel Stability and Bed material Transport in the Tillamook Bay Tributaries and Nehalem River Basin Northwestern Oregon written by Krista L. Jones and published by . This book was released on 2012 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preliminary Assessment of Vertical Stability and Gravel Transport Along the Umpqua River Southwestern Oregon written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessing Stream Channel Stability at Bridges in Physiographic Regions written by U. S. Department Transportation and published by CreateSpace. This book was released on 2015-03-14 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of bridge inspections is to assess the safety of bridges on a regular basis so that any deficiencies will be identified and corrected. Given the large number of bridges over water in any State, bridge inspectors must inspect the superstructure, substructure, and waterway of each bridge in a short amount of time. A typical range of time for bridge inspections is 15 minutes to 2 hours, depending on the complexity and condition of the bridge. A more detailed inspection might ensue if a deficiency is detected. In the case of waterways and erosion, a hydraulic engineer might visit the bridge to assess the situation in greater detail. For either of these levels of inspection, and given the very limited right-of-way at most bridges, the inspector or engineer typically will not walk more than a few hundred feet upstream or downstream. Most inspectors do not leave the bridge right-of-way. Thus, a method is needed for systematically assessing the stability of the stream channel with respect to the bridge. The ability to assess channel stability in the vicinity of bridges also is needed for designing road crossings, and for mitigating and predicting erosion at those structures. Bridge failures due to geomorphic or regional instability have been experienced in many locations in the United States and elsewhere. Federal Highway Administration (FHWA) guidelines for stream stability and erosion at bridges describe examples of problems at bridges caused by regional channel degradation and lateral bank changes. These guidelines require that engineers assess channel instability in their bridge assessments. However, for most bridges, only a preliminary assessment can be conducted due to time and money constraints. The objective of this study was to expand and improve previous rapid stability assessment methods to include additional factors, such as major physiographic units across the United States, range of bank materials and complexities, critical bank heights, stream type and processes, sand bed streams, and in-channel bars or lack of bars.
Download or read book Geographical Abstracts written by and published by . This book was released on 1986 with total page 1374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bulletin written by Oregon. Department of Geology and Mineral Industries and published by . This book was released on 1937 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stream Corridor Restoration written by and published by National Technical Info Svc. This book was released on 1998 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document is a cooperative effort among fifteen Federal agencies and partners to produce a common reference on stream corridor restoration. It responds to a growing national and international interest in restoring stream corridors.
Download or read book Bibliography of the Geology and Mineral Resources of Oregon written by and published by . This book was released on 1981 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Riparian Areas written by National Research Council and published by National Academies Press. This book was released on 2002-10-10 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Clean Water Act (CWA) requires that wetlands be protected from degradation because of their important ecological functions including maintenance of high water quality and provision of fish and wildlife habitat. However, this protection generally does not encompass riparian areasâ€"the lands bordering rivers and lakesâ€"even though they often provide the same functions as wetlands. Growing recognition of the similarities in wetland and riparian area functioning and the differences in their legal protection led the NRC in 1999 to undertake a study of riparian areas, which has culminated in Riparian Areas: Functioning and Strategies for Management. The report is intended to heighten awareness of riparian areas commensurate with their ecological and societal values. The primary conclusion is that, because riparian areas perform a disproportionate number of biological and physical functions on a unit area basis, restoration of riparian functions along America's waterbodies should be a national goal.
Download or read book Sediment Transport Technology written by Daryl B. Simons and published by Water Resources Publication. This book was released on 1992 with total page 928 pages. Available in PDF, EPUB and Kindle. Book excerpt:
