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Contemporary forest road management with economic and environmental objectives /Thompson, Matthew P. January 1900 (has links)
Thesis (Ph. D.)--Oregon State University, 2009. / Printout. Includes bibliographical references. Also available on the World Wide Web.
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An evaluation of culverts on low volume forest roads in the Oregon Coast RangePiehl, Bradley T. 25 July 1986 (has links)
WRRI 106 is placeholder for the research findings of Project No. G-928-03 funded by U.S. Dept. of the Interior, Geological Survey. Findings are available in Piehl, Bradley T. (1986) An evaluation of culverts on low volume forest roads in the Oregon Coast Range (Masters Thesis, Oregon State University. Forest Engineering) LD43301987.P52.
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The effectiveness of polyacrylamide in providing short-term erosion control on steep slopes /Partington, Mark January 2004 (has links)
A study was conducted to determine if polyacrylamide (PAM) could be utilized as a best management practice to reduce soil erosion on forest road embankments. Experiments involving two different PAM application rates (10 and 20 kg/ha) were conducted using natural rainfall in 2001 and 2002 and indoor rainfall simulation. In 2001, PAM was combined with a broadcast application of grass seed. / The study results suggest that PAM provided no statistically significant erosion control after natural rainfall on a loam soil. In the rainfall simulation experiments PAM applied at both 10 and 20 kg/ha significantly reduced soil erosion (by 75 and 77%) and the turbidity of runoff water (by 99%). PAM application at 10 kg/ha significantly increased grass densities (by 109%) compared with the control plots. However, PAM applied at 20 kg/ha provided no significant increase in grass density compared with the control.
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An advanced inventory method for forest roads /Gorsevski, Peter (Pece) V. January 1900 (has links)
Thesis (M.S.)--Oregon State University, 1996. / Typescript (photocopy). Includes bibliographical references (leaves 146-148). Also available on the World Wide Web.
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Stream channel adjustments following logging road removal in Redwood National ParkKlein, Randy D. January 1987 (has links)
Thesis (M.S.)--Humboldt State University, 1987. / Typescript (photocopy). Includes bibliographical references (leaves 54-56).
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Gradeability of log trucks /Stryker, Edwin Arthur. January 1977 (has links)
Thesis (M.S.)--Oregon State University, 1977. / Includes bibliographical references (p. 47-49). Also available on the World Wide Web.
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Exotic plant species dynamics from 1994 to 2005 on road networks in forested landscapes of western Oregon /Sheehy, Samantha. January 1900 (has links)
Thesis (M.S.)--Oregon State University, 2007. / Printout. Includes bibliographical references (leaves 227-234). Also available on the World Wide Web.
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The effectiveness of polyacrylamide in providing short-term erosion control on steep slopes /Partington, Mark January 2004 (has links)
No description available.
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Hydrologic integration of forest roads with stream networks in two basins, western Cascades, OregonWemple, Beverly C. 21 January 1994 (has links)
This study assessed how logging-access roads may have contributed to
observed historical increases in peak discharges associated with small and large
logged basins in the western Cascades of Oregon. The study was conducted on
the Lookout Creek (62km��) and the upper Blue River (118km��) basins. Potential
road effects on hydrology were examined using a combination of field surveys
and spatial modeling with a geographic information system (GIS). Road
networks were similar in both basins with respect to hillslope position,
orientation, and stream crossings, but roads in Blue River were constructed one
or two decades later than roads in Lookout Creek. A total of 20% (62 km) of the
road length was sampled to assess routing of surface flow, using 31 2-km
transects stratified by decade of construction and hillslope position. Along each
transect, ditches and culvert outlets were examined and this information used to
predict the probable routing of water to (1) existing stream channels, (2) newly
eroded gullies downslope of culvert outlets, or (3) subsurface flow. Nearly 60%
of the surveyed road length appeared to route water directly to stream channels or into gullies. Over time, the length of road connected to stream crossings has
decreased, while the length of road discharging runoff that reinfiltrates to
subsurface flow has increased, as roads have progressed up hillslopes and onto
ridges in Lookout Creek and Blue River. The relatively constant proportion of
the road network draining to gullies over time suggests that roads have the
potential to become integrated into stream networks, even when constructed on
unchannelled hillslope positions. An extended stream network, assumed to
exist under storm conditions, was simulated for the basins using a digital
elevation model. Although gullies and ditches differ from natural channels,
extrapolation of field surveys using the GIS suggested that roads might extend
the stream network by as much as 40% during storm events. It is hypothesized
that such an effect could decrease the time of concentration of stormflow and
contribute to higher peak discharges observed after clearcutting and road
construction in these basins. Differences in the magnitude of road effects on
peak flow generation may occur among road systems according to hillslope
position of roads, road age, soil saturation, geologic substrate, and climate.
These differences may explain the range of observed results from paired-basin
studies examining road effects on hydrologic response. / Graduation date: 1994
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A methodology for planning road best management practices combining wepp road erosion modeling and simulated annealing optimizationEfta, James Anderson. January 2009 (has links)
Thesis (MS)--University of Montana, 2009. / Contents viewed on December 21, 2009. Title from author supplied metadata. Includes bibliographical references.
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