Download or read book Does Harvest in West Slope Douglas fir Increase Peak Flow in Small Forest Streams written by Jack Rothacher and published by . This book was released on 1973 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Logging in the Douglas-fir has only minor effect on major peak streamflows which occur when soils are thoroughly wet. Exceptions are the early fall storms following the dry summers characteristic of the west coast climate. At this time, peak streamflow from unlogged areas may be less than in the harvested area because the soil in the unlogged area is drier and has greater moisture storage capacity than in the harvested area. These early fall storms rarely result in major peak streamflow.
Download or read book Does harvest in west slope Douglas fir increase peak flow in small forest streams written by and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Does Harvest in West Slope Douglas fir Increase Peak Flow in Small Forest Streams written by Jack Rothacher and published by . This book was released on 1973 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Does Harvest in West Slope Douglas Fir Increase Peak Flow in Small Forest Streams Classic Reprint written by Jack Rothacher and published by Forgotten Books. This book was released on 2018-09-11 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Does Harvest in West Slope Douglas-Fir Increase Peak Flow in Small Forest Streams? The highly productive Douglas - fir region of Oregon and Washington lies to the west of the crest of the Cascades. Precipitation in this region ranges from about 35 inches to well over 100 inches annually, most of which comes during the winter months. Rainfall during the wet season fills the soil reservoir with the water needed to meet the demands of dense stands of rapidly growing trees. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Download or read book Hydrology of Small Forest Streams in Western Oregon written by Robert Dennis Harr and published by . This book was released on 1976 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: The hydrology of small forest streams in western Oregon varies by time and space in terms of both streamflow and channel hydraulics. Overland flow rarely occurs on undisturbed soils. Instead, water is transmitted rapidly through soils to stream channels by displacement of stored soil water. Drainage networks expand and contract according to the interaction between precipitation characteristics and soil's capability to store and transmit water. Drainage networks are more extensive in winter than in summer. Streamflow may he 1,000 to 5,000 times greater during winter storms than during summer low flow. A stream's kinetic energy varies along with streamflow. Channel width and depth, heterogeneity of bed materials, and the accumulation of large, organic debris affects the dissipation of kinetic energy. Clearcutting can increase relatively small peak flows, but forest roads and extensive areas of soil compacted by other means may increase larger peak flows. Both roadbuilding and clearcutting can cause soil mass movements, which can drastically alter a stream's channel hydraulics by adding debris or scouring the charnel to bedrock. Removal of naturally occurring organic debris that has become part of a stable channel can accelerate bed and bank erosion.
Download or read book Effects of Forest Practices on Peak Flows and Consequent Channel Response written by Gordon Grant and published by . This book was released on 2008 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a state-of-the-science synthesis of the effects of forest harvest activities on peak flows and channel morphology in the Pacific Northwest, with a specific focus on western Oregon and Washington. We develop a database of relevant studies reporting peak flow data across rain-, transient-, and snow-dominated hydrologic zones, and provide a quantitative comparison of changes in peak flow across both a range of flows and forest practices. Increases in peak flows generally diminish with decreasing intensity of percentage of watershed harvested and lengthening recurrence intervals of flow. Watersheds located in the rain-dominated zone appear to be less sensitive to peak flow changes than those in the transient snow zone; insufficient data limit interpretations for the snow zone. Where present, peak flow effects on channel morphology should be confined to stream reaches where channel gradients are less than approximately 0.02 and streambeds are composed of gravel and finer material. We provide guidance as to how managers might evaluate the potential risk of peak flow increases based on factors such as presence of roads, watershed drainage efficiency, and specific management treatments employed. The magnitude of effects of forest harvest on peak flows in the Pacific Northwest, as represented by the data reported here, are relatively minor in comparison to other anthropogenic changes to streams and watersheds.
Download or read book Effects of Forest Practices on Peak Flows and Consequent Channel Response written by Gordon E. Grant and published by DIANE Publishing. This book was released on 2010-09 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes a database of relevant studies reporting peak flow data across rain-, transient-, and snow-dominated hydrologic zones. Provides a quantitative comparison of changes in peak flow across both a range of flows and forest practices. Increases in peak flows generally diminish with decreasing intensity of percentage of watershed harvested and lengthening recurrence intervals of flow. Peak flow effects on channel morphology should be confined to stream reaches where channel gradients are less than 0.02 and streambeds are composed of gravel and finer material. Managers should evaluate the potential risk of peak flow increases based on factors such as presence of roads, specific mgmt. treatments employed, and watershed drainage efficiency.
Download or read book Lumber Yield from Western White Pine in Northern Idaho written by Marlin E. Plank and published by . This book was released on 1979 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Six Rivers National Forest N F Fox Planning Unit written by and published by . This book was released on 1974 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forest Service Research Accomplishments written by and published by . This book was released on 1974 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Headwaters Forest Acquisition and PALCO Sustained Yield Plan and Habitat Conservation Plan written by and published by . This book was released on 1999 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Site Index and Height Growth Curves for Managed Even aged Stands of White Or Grand Fir East of the Cascades in Oregon and Washington written by Collin D. Bevins and published by . This book was released on 1978 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Use of a Precipitation runoff Model for Simulating Effects of Forest Management on Streamflow in 11 Small Drainage Basins Oregon Coast Range written by John C. Risley and published by . This book was released on 1994 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forest Roads written by and published by . This book was released on 2001 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Effects of roads in forested ecosystems span direct physical and ecological ones (such as geomorphic and hydrologic effects), indirect and landscape level ones (such as effects on aquatic habitat, terrestrial vertebrates, and biodiversity conservation), and socioeconomic ones (such as passive-use value, economic effects on development and range management). Road effects take place in the contexts of environmental settings, their history, and the state of engineering practices, and must be evaluated in those contexts for best management approaches.
Download or read book Tongass National Forest N F Swan Lake Lake Tyee Intertie written by and published by . This book was released on 1997 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Accomplishments written by and published by . This book was released on 1976 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Eugene Timber Management written by and published by . This book was released on 1983 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
