Download or read book Hydrologic Properties of Soils on Three Small Watersheds in the Western Cascades of Oregon Classic Reprint written by C. T. Dyrness and published by Forgotten Books. This book was released on 2017-11-18 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Hydrologic Properties of Soils on Three Small Watersheds in the Western Cascades of Oregon Eight soil series have been proposed and mapped on the water sheds. These series have not been coordinated into the system of the National Cooperative Soil Survey so that changes in names and defini tions are possible. Two series have not been given names but are referred to by the letters A and M. Further subdivisions within the series, based on characteristics of stoniness, slope, and landform, have resulted in the use of 46 mapping units (table The two most widely occurring series are the Limberlost and A. These are followed by the Frissell and Budworm series in decreasing order of occurrence. 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 Hydrologic Properties of Soils on Three Small Watersheds in the Western Cascades of Oregon written by C. T. Dyrness and published by . This book was released on 1969 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydrologic and Related Characteristics of Three Small Watersheds in the Oregon Cascades written by Jack Rothacher and published by . This book was released on 1967 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydrologic Properties of Soils on 3 Small Watersheds in Western Cascades of Oregon written by and published by . This book was released on 1969 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydrologic and Related Characteristics of Three Small Watersheds in the Oregon Cascades written by United States. Forest Service and published by . This book was released on 1967 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydrologic and Related Characteristics of 3 Small Watersheds in Oregon Cascades written by and published by . This book was released on 1967 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Erosion and Sedimentation Following Road Construction and Timber Harvest on Unstable Soils in Three Small Western Oregon Watersheds Classic Reprint written by R. L. Fredriksen and published by Forgotten Books. This book was released on 2018-01-08 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Erosion and Sedimentation Following Road Construction and Timber Harvest on Unstable Soils in Three Small Western Oregon Watersheds Logging of old growth Douglas - fir timber by high-lead cable methods was completed during the Winter of 1962-63 on three clearcuts of 13, 20, and 28 acres. The logging removed timber from 25 percent of the watershed (fig. Logging debris was burned in September 1963. 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 Changes in Streamflow Following Timber Harvest in Southwestern Oregon Classic Reprint written by Robert Dennis Harr and published by Forgotten Books. This book was released on 2017-12-12 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Changes in Streamflow Following Timber Harvest in Southwestern Oregon Changes in size of annual and seasonal yields and instantaneous peak flows were determined on three small, experimental watersheds following three silvicultural methods of timber harvest. Changes are related to changes in forest hydrologic system. Keywords: Streamflow - )forestry methods, water supply, logging -hydrology, runoff - )vegetation. 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 Hydrologic Changes After Logging in Two Small Oregon Coastal Watersheds written by Donald Dunstan Harris and published by . This book was released on 1977 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Streamflow Sediment transport and Water temperature Characteristics of Three Small Watersheds in the Alsea River Basin Oregon written by David Dell Harris and published by . This book was released on 1971 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genesis of Some Soils in the Central Western Cascades of Oregon written by Randall Barber Brown and published by . This book was released on 1974 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soils representative of several landscape units in the H.J. Andrews Experimental Forest, Western Cascade Range, were sampled, analyzed, and tentatively classified. Genetic inferences were drawn relating soils to landscape position and other factors of soil formation. Descriptive information and nutrient capital data were provided to support ecosystem modelling efforts by the Coniferous Forest Biome study group of the U.S./International Biological Program (IBP). To meet the "nutrient capital" requirements of IBP, and to gain insight particularly into the effects of coarse fragments on soil genesis, a volumetric approach was used. Soil organic matter, total N, extractable P, exchangeable cations, free Fe oxides, and cation exchange capacity were expressed in terms of weight or equivalents per unit volume of "whole soil," defined as organic and mineral fine earth components plus pore space plus coarse fragments. The various entities, in grams or equivalents per liter of whole soil, were observed as to their variation with depth. Additional calculations showed levels of the various entities per surface meter 3 of whole soil. Soil temperature data from several sites within the Andrews Forest showed the mesic-frigid soil temperature regime boundary to fall at about the 600 m (2, 000 ft) elevation on south slopes and at about the 450 m (1, 500 ft) elevation on north slopes. The frigidcryic boundary apparently was above the 1, 500 m (4,900 ft) elevation in the Andrews Forest. A sequence of three fluvial and two colluvial soils ranging in elevation from 440 to 460 m was studied in conjunction with concurrent IBP investigations into the geomorphic history of the area The soil on a floodplain adjacent to Lookout Creek, in the sandy-skeletal, mixed, mesic family of Fluventic Hapludolls, was between 500 and 7, 000 yrs in age. The adjacent stream terrace soil, in the loamyskeletal, mixed, mesic family of Fluventic Dystrochrepts, was> 7, 000 yrs old as evidenced Mazama pumice erposi tE-; on or near the surface of the terrace. Volumetric analysis suggested that the floodplain soil had a mollic epipedon largely by virtue of its high content of coarse fragments. The coarse fragments caused a concentration of soil organic matter and recycled cations into a smaller volume of fine earth as compared with the terrace soil, which was lower in coarse fragments. An alluvial-colluvial fan emanated from an adjacent slope and lapped onto the terrace. The soil in this fan was a member of the Fluventic Eutrochrepts, loamy-skeletal, mixed, mesic. It was high in base status and moderately high in clay content, apparently because the southeast-facing source area for parent material here had experienced only shallow weathering and minimal leaching. Across Lookout Creek from these landscape units was a remnant of a high colluvial terrace emanating from a northwest-facing watershed. At the crest of this fan remnant the soil was a member of the loamy-skeletal, mixed, mesic family of Fluventic Dystrochrepts with a distinct layer of Mazama pumice at the 75 to 85 cm depth. This terrace is cut by the watershed stream, which has deposited a comparatively well sorted fan. Soils are in the coarseloamy, mixed, mesic family of Fluventic Dystrochrepts, Eight landscape units in longitudinal and transverse crosssections of upper McRae Creek valley, ranging in elevation from 800 to 1, 200 m, were chosen to study upland soil genesis. Proceeding up the valley, stage of profile development appeared to decrease, indicating a series of depositional events. Soils varied from Eutric Glossoboralfs, fine, mixed on the lowermost surface to Fluventic Dystrochrepts, fine-loamy, mixed, frigid on the next higher surface, to Fluventic Dystrochrepts, loamy-skeletal, mixed, frigid on the next higher surface, to Typic Haplumbrepts, loamy-skeletal, mixed, frigid on the backslope at the valley headwall. The two lowermost soils contrasted markedly with the two uppermost soils, being lower in content of organic matter and N, and higher in base status and clay content. The upper two soils, typical of upper valley bottom and sideslope soils in the region, were extremely low in exchangeable bases and base saturation as measured at pH 7. Compared with the two lower soils, however, these upper soils had relatively high soil: water pH values and relatively small drops in pH from soil:water to soil :KCI measurement. This may be an indication that the upper soils were higher in amorphous content. Greater pH-dependent-CEC would have caused the upper soils to exhibit unrealistically high CEO s--and thus low base saturations--when measured at pH 7. A topoclimosequence of soils on north, east (saddle), and south-facing landscape units with a single parent rock lithology was studied in the transverse valley transect. All three soils were placed tentatively in the Andic Dystrochrepts. The north-facing soil was in a medial - skeletal, frigid family, was the deepest to bedrock (> 1 1/2 m), aria had the freshest coarse fragments of the three soils. The saddle and south-facing soils were in medial-skeletal, frigid and medial, frigid families, respectively. They were shallow (

Download or read book Oregon s Long range Requirements for Water written by Oregon. State Water Resources Board and published by . This book was released on 1969 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydrogeologic Evaluation of the Streamflow Records in the Rogue River Basin Oregon written by Richard A. Young and published by . This book was released on 1961 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Streamflow After Patch Logging in Small Drainages Within the Bull Run Municipal Watershed Oregon Classic Reprint written by Robert Dennis Harr and published by Forgotten Books. This book was released on 2017-11-19 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Streamflow After Patch Logging in Small Drainages Within the Bull Run Municipal Watershed, Oregon Changes in annual water yield, mini mum streamflow, and instantaneous peak flow (the maximum rate of streamflow caused by a rain or snow melt event) are all important in municipal watershed management. If timber cutting can increase water yield, then a municipal watershed might be made to yield more water, particularly during the summer period of low flow. Increased size of peak flows as a result of timber harvest might be associated with not only overland flow and attendant surface erosion but also erosion of stream channels. Both factors could adversely affect water quality. In 1955, the usda Forest Service and the City of Portland, Oregon, began a cooperative study to determine effects of timber harvest on water yield and timing of runoff and the quality of streamflow in three small watersheds within the Bull Run Municipal Watershed. This report deals only with changes in quantity and timing of streamflow. 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 Effect of Wildfire on Soil Wettability in the High Cascades of Oregon Classic Reprint written by C. T. Dyrness and published by Forgotten Books. This book was released on 2017-11-19 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Effect of Wildfire on Soil Wettability in the High Cascades of Oregon The study was conducted in the 7, 700 acre (3 116 ha) Airstrip Burn on the crest of the Cascade Range near Santiam Pass, Willamette National Forest. The fire occurred during the period of August 28 until September 8, 1967. The pattern of burning included several areas of very severe burn, some light burn with only partially killed tree crowns, and some completely unburned islands. 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 Erosion and sedimentation following road construction and timber harvest on unstable soils in three small western Oregon watersheds written by R. L. Fredriksen and published by . This book was released on 1970 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analysis of Hydrology and Erosion in Small Paired Watersheds in a Juniper sagebrush Area of Central Oregon written by Michael Patrick Fisher and published by . This book was released on 2004 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current research indicates that the expansion of western juniper can inhibit soil water retention, storage and prolonged releases from watersheds. This phenomenon is of great importance in eastern Oregon, as western juniper is encroaching into sagebrush/grass communities with a correlated reduction in herbaceous ground cover, resulting in reduced infiltration rates and increased soil loss. A paired watershed study for the purpose of monitoring water quality/quantity as affected by western juniper in the Camp Creek drainage, a tributary to the Crooked River, was established in 1994. Monitoring methods consisted of annual and semiannual measurements of hillslope soil movement, channel morphology, including total cross-sectional area, scour and deposition, channel discharge, depth to groundwater, and precipitation. Channel discharge was established using a 3,0 H-flume with a pressure transducer and stilling well and data logger. Changes in channel morphology were determined using 25 permanent, channel cross-section plots per watershed. Hillslope erosion processes were determined using 12 transects of 3 sediment stakes per watershed, located within gullies of subwatersheds. Data showed the two study areas to be well correlated with regards to soil movement, both within the main channels and in the subwatersheds (hillslopes). Some of the geomorphometric properties are similar (not statistically different) and differences in other parameters can be explained. Channel discharge appears to be significantly different in intensity, frequency, and duration of flow. These differences in surface discharge may be explained as further data collection of subsurface flow analysis in conjunction with sampling of springs located in each watershed are conducted.