Download or read book Woody Debris Channel Morphology and Sediment Storage Along Headwater Streams of Great Smoky Mountains National Park Tennessee North Carolina written by Evan A. Hart and published by . This book was released on 2000 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dissertation Abstracts International written by and published by . This book was released on 2001 with total page 834 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Controls of Large Woody Debris on Headwater Stream Morphology Washington State written by Christopher Andrew Sturm and published by . This book was released on 2000 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guide to Programs of Geography in the United States and Canada written by and published by . This book was released on 2002 with total page 846 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Headwater Stream Sediment Storage in Relation to In stream Woody Debris and Forest Management Practices in Southwestern Washington written by Melissa A. Maxa and published by . This book was released on 2009 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Patterns of Wood and Sediment Storage Along Debris flow Impacted Headwater Channels in Old growth and Industrial Forests written by Jeremy T. Bunn and published by . This book was released on 2003 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modeling Large Woody Debris Recruitment for Small Streams of the Central Rocky Mountains written by Don C. Bragg and published by . This book was released on 2000 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: As our understanding of the importance of large woody debris (LWD) evolves, planning for its production in riparian forest management is becoming more widely recognized. This report details the development of a model (CWD, version 1.4) that predicts LWD inputs, including descriptions of the field sampling used to parameterize parts of the model, the theoretical and practical underpinnings of the model's structure, and a case study of CWD's application to a stream in Wyoming's Bridger-Teton National Forest.

Download or read book Effects of Large Woody Debris on Channel Morphology and Substrate Embeddedness in a Sand Impacted Low Gradient Stream written by Donald George Uzarski and published by . This book was released on 1995 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Estimating Large Woody Debris Recruitment from Adjacent Riparian Areas written by Kathleen P. Minor and published by . This book was released on 1997 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Large woody debris recruitment to streams from adjacent riparian forests influences stream channel morphology, sediment routing, and fish habitat. A mathematical model was developed to 1) determine whether the trees in a stand adjacent to a stream, upon falling, would provide large woody debris of a specified size to the stream and 2) determine the volume of trees, upon falling, that reach a stream over a specific time period. The model considered stand and topographic parameters such as tree size, tree form, distance from the stream, hill slope gradient, stream gradient, stream width, riparian buffer width, and basal area of the stand. The likelihood that a tree of a specified size will reach the channel is the probability the tree will fall in a given direction evaluated at 1 degree azimuths from 0 to 360 degrees multiplied by the probability it is tall enough to reach the stream. Volume estimates were calculated by multiplying estimated tree volumes by the joint probabilities. A test riparian polygon comprised of Douglas-fir (Pseudotsuga menziesii {Mirb.] Franco) was selected to illustrate how the model predicts large woody debris recruitment of both key pieces and volume to an adjacent stream. Estimating large woody debris recruitment to streams from adjacent riparian stands over several decades may be useful in determining effectiveness of various configurations of riparian buffers and provide assistance in the prediction of the future quality of aquatic and terrestrial habitats in riparian zones. This model provides one way to estimate where large wood is coming from within a riparian leave area and could be useful in determining necessary widths for riparian areas that are intended to provide large woody debris recruitment over time.

Download or read book Process Based Management of Large Woody Debris at the Basin Scale written by Neil Steven Lassettre and published by . This book was released on 2003 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Short Term Effectiveness of High Density Large Woody Debris in Asotin Creek as a Cheap and Cheerful Restoration Action written by Reid Camp and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In response to human impacts, river restoration and rehabilitation actions have become a priority in the United States. In the Pacific Northwest, most restoration actions are focused on repairing degraded freshwater habitat to increase or improve Pacific salmonid production. However, traditional river restoration actions remained largely unchanged for over 100 years despite a lack of definitive evidence that the actions were effective. More recently, there has been a surge in process-based restoration actions, which aim to reestablish the physical and biological processes that maintain fluvial and floodplain environments by targeting the root causes of degradation in a watershed. Cheap and cheerful restoration projects focus on restoration actions that are low impact and cost effective, can be implemented over large scales, and target degraded processes. However, because cheap and cheerful restoration is a relatively new method, the success of these types of projects has not been assessed. To address this issue, I studied the short-term physical effectiveness of a type of cheap and cheerful restoration that uses high density large woody debris (HDLWD) to restore instream habitat complexity in two wadeable tributaries to Asotin Creek in southeast Washington State. My specific research objectives included (1) assessing hydraulic and geomorphic responses in the stream channel imposed by restoration structures, (2) quantifying the changes to geomorphic channel unit assemblages post restoration, (3) quantifying changes in sediment storage post restoration, and (4) developing a geomorphic condition assessment of Asotin Creek using the River Styles Framework. Additionally, I developed a mobile database application (app) to facilitate data collection using a novel rapid restoration effectiveness assessment survey. Through analysis and a thorough review of the land use history in Asotin Creek, I determined that much of the watershed is in poor geomorphic condition based on the River Styles Framework for river classification. Many stream reaches have been degraded from their historic condition and often lack habitat complexity associated with suitable rearing habitat for juvenile salmonids. My results indicate that the structures are impose several immediate hydraulic responses following installation. These hydraulic responses increase hydraulic roughness, which results in predictable geomorphic responses following high flow events. Following restoration, the number and area of pools and bars significantly increased within treatment sites, while the number and area of planar units decreased. Likewise, it appears that the addition of the structures has led to a 25% increase in depositional volume at treatment sites compared to control sites. Results from the rapid assessment approach supported the more vetted approaches used to assess the efficacy of the treatment. However, the viability of the app and rapid protocol indicate that inter-observer variability may be high, and estimates of geomorphic unit area are not entirely consistent with the vetted approaches. Analysis of the rapid assessment approach revealed pertinent improvements to the app and rapid protocol that will be made in the future.

Download or read book The Impact of Woody Debris on Bank Stability and Macroinvertebrates in Intermittent Headwater Streams Within the Western Allegheny Plateau written by Gabrielle Nicole Russell and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Woody Debris and Macroinvertebrate Community Structure of Low order Streams in Colville National Forest Washington written by Megan Bryn Rogers and published by . This book was released on 2003 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biodiversity and Coarse Woody Debris in Southern Forests written by and published by DIANE Publishing. This book was released on 1996 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quantifying Channel Change Following Post fire Debris Flows in a Steep Coastal Stream Big Sur California written by Telemak Olsen and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Debris flows commonly occur following wildfire in steep landscapes, introducing large volumes of sediment to downstream fluvial systems. Fire-related sediment supply perturbations impact channel morphology, and importantly, fragile aquatic and riparian ecosystems downstream of disturbance. The Big Creek watershed drains 57 km2 of steep chaparral and coast redwood forest along California's Central Coast. Streams in the Big Creek watershed typically exhibit step-pool/cascade morphology and serve as vital spawning habitat for anadromous Steelhead Trout (Oncorhynchus mykiss). In 2020, 97% of the Big Creek watershed burned in the Dolan Wildfire. In January 2021, an atmospheric river event triggered a series of post-fire debris flows and floods in Big Creek which drastically altered channel morphology. Here, I characterize morphologic change following post-fire disturbance in Big Creek using pre- and post-fire structure from motion (SfM) and airborne light detection and ranging (lidar) datasets. I use topographic differencing to quantify post-fire topographic change within channels in the Big Creek watershed. I quantify grain size change using pre- and post-fire SfM datasets and couple these data with hydraulic and hydrologic modeling to estimate changes in sediment transport capacity and channel stability following post-fire disturbance in Big Creek. I also perform these analyses for Devil's Creek: a tributary of Big Creek which burned but did not experience post-fire debris flows within the main channel. Post-fire debris flows initiated in Cathedral Creek and Brunette Creek, two steep tributaries of Big Creek, which delivered roughly 30,000 m3 of material to Upper Big Creek. By October 2022, approximately 72% of debris flow material exported from Cathedral and Brunette Creek had been evacuated from the channel. Over 90% of the material remaining in Big Creek by 2022 was stored upstream of a valley-spanning log jam emplaced near the confluence of Upper Big Creek and Brunette Creek during post-fire debris flows. Upper Big Creek's initial response to post-fire disturbance is characterized by substantial fining of the D16 and D50, followed by re-coarsening 2-years post-fire. Conversely, Devil's Creek exhibits marginal fining 1-year post-fire, followed by little change 2-years post-fire. Changes in grain size distribution are responsible for considerable change in sediment transport capacity and channel stability. In Big Creek, sediment transport capacity increased 1-year post-fire, while channel stability decreased; 2-years post-fire, both sediment transport capacity and channel stability exhibit signs of recovery towards pre-fire conditions. In Devil's Creek, sediment transport capacity exhibited a substantial increase 1-year post-fire, followed by little change 2-years post-fire; changes in channel stability mirror trends in sediment transport capacity. My findings indicate that post-fire geomorphic recovery occurs remarkably quickly in Upper Big Creek. Topographic differencing, sediment transport capacity, and channel stability analyses suggest that debris flows play an integral role in reconfiguring the vertical structure of steep, step-pool channels. Post-fire morphologic change has several potential implications for aquatic habitat; the quantitative data presented in this thesis may be valuable for biologists monitoring fish population dynamics in the Big Creek watershed.

Download or read book Drinking Water from Forests and Grasslands written by and published by . This book was released on 2000 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Channel Morphology by Variable Sediment Loads on Three Streams Adjacent to Highway Construction Sites in the Piedmont of South Carolina written by Joseph Anthony Harrigan and published by . This book was released on 1977 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: