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A Sediment Budget Of The Issaquah Creek Basin
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Book Synopsis A Sediment Budget of the Issaquah Creek Basin by : Erin Jayne Nelson
Download or read book A Sediment Budget of the Issaquah Creek Basin written by Erin Jayne Nelson and published by . This book was released on 1999 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A 48-year Sediment Budget (1942-1989) for Deer Creek Basin, Washington by : Jerry Arthur Eide
Download or read book A 48-year Sediment Budget (1942-1989) for Deer Creek Basin, Washington written by Jerry Arthur Eide and published by . This book was released on 1990 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Sediment Budget for the Grouse Creek Basin, Humboldt County, California by : Mary A. Raines
Download or read book A Sediment Budget for the Grouse Creek Basin, Humboldt County, California written by Mary A. Raines and published by . This book was released on 1991 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A sediment budget constructed for the Grouse Creek basin in northern California provides information on the sources and timing of sediment production to aid land managers in understanding the effects of logging impacts in a sensitive watershed. The sediment budget yields a sediment production rate of 1,750 t/km2/yr for a 29-year period. This rate is among the highest for such disturbed forested basins in the Pacific Northwest. Approximately 40 percent of the Grouse Creek basin, which is bisected by regional structural features that have created zones of weak and altered rock, has been logged in the last 35 years. Sediment production is dominated by mass wasting and is concentrated in areas of geologic instability and logging and during major storms. Over 86 percent of all sediment was produced by landsliding, with 71 percent of landslide volumes generated during a six-year period that includes the flood of December 1964. Ninety-three percent of all sediment volumes were generated during the 15-year period from 1960 to 1975 that included four major storm events, the completion of 74 percent of basin logging activity and 80 percent of road building. Landsliding in old growth was found to be spatially related to erosion in managed areas. Sediment produced in logged and roaded areas increased the frequency of streamside landsliding in some downstream, unmanaged areas by channel aggradation and lateral corrosion of the streambanks. The remainder of sediment produced from erosion of streambanks, bare hillslopes, and roads is less than 14 percent of the total sediment production. However, as landsliding decreased after 1975, the relative importance of hillslope erosion and road-related erosion increased. Erosion rates from roads are 20 to 140 times the erosion rates in the unmanaged areas and 7 to 34 times those in logged areas. Erosion processes in Grouse Creek were found to differ by stream order. Debris torrents and streambank erosion dominate in second and third-order channels, whereas streamside landsliding was more frequent in fourth through sixth-order streams. An estimate of the increase in stored sediment indicates 27 percent of the sediment introduced to stream channels during the 29-year period of the study is still in the system.
Book Synopsis Sediment Sources and Sediment Transport in the Redwood Creek Basin by :
Download or read book Sediment Sources and Sediment Transport in the Redwood Creek Basin written by and published by . This book was released on 1981 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sediment Routing in Tributaries of the Redwood Creek Basin by : John Pitlick
Download or read book Sediment Routing in Tributaries of the Redwood Creek Basin written by John Pitlick and published by . This book was released on 1982 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Sediment Budget for McDonald Creek Watershed, Northwestern, California by : Kristine M. Leep
Download or read book A Sediment Budget for McDonald Creek Watershed, Northwestern, California written by Kristine M. Leep and published by . This book was released on 2006 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sediment Budgets written by D. E. Walling and published by . This book was released on 2005 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Sediment Budget for the Pipers Creek Watershed by : Chase Macneil Barton
Download or read book A Sediment Budget for the Pipers Creek Watershed written by Chase Macneil Barton and published by . This book was released on 2002 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estimating Changes in Sediment Supply Due to Forest Practices by : Kari M. Paulson
Download or read book Estimating Changes in Sediment Supply Due to Forest Practices written by Kari M. Paulson and published by . This book was released on 1997 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Jonathan A. Czuba Publisher :U.S. Department of the Interior, U.S. Geological Survey ISBN 13 : Total Pages :150 pages Book Rating :4./5 ( download)
Book Synopsis Geomorphic analysis of the river response to sedimentation downstream of Mount Rainier, Washington by : Jonathan A. Czuba
Download or read book Geomorphic analysis of the river response to sedimentation downstream of Mount Rainier, Washington written by Jonathan A. Czuba and published by U.S. Department of the Interior, U.S. Geological Survey. This book was released on 2012-12-07 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of the geomorphology of rivers draining Mount Rainier, Washington, was completed to identify sources of sediment to the river network; to identify important processes in the sediment delivery system; to assess current sediment loads in rivers draining Mount Rainier; to evaluate if there were trends in streamflow or sediment load since the early 20th century; and to assess how rates of sedimentation might continue into the future using published climate-change scenarios. Rivers draining Mount Rainier carry heavy sediment loads sourced primarily from the volcano that cause acute aggradation in deposition reaches as far away as the Puget Lowland. Calculated yields ranged from 2,000 tonnes per square kilometer per year [(tonnes/km2)/yr] on the upper Nisqually River to 350 (tonnes/km2)/yr on the lower Puyallup River, notably larger than sediment yields of 50–200 (tonnes/km2)/yr typical for other Cascade Range rivers. These rivers can be assumed to be in a general state of sediment surplus. As a result, future aggradation rates will be largely influenced by the underlying hydrology carrying sediment downstream. The active-channel width of rivers directly draining Mount Rainier in 2009, used as a proxy for sediment released from Mount Rainier, changed little between 1965 and 1994 reflecting a climatic period that was relatively quiet hydrogeomorphically. From 1994 to 2009, a marked increase in geomorphic disturbance caused the active channels in many river reaches to widen. Comparing active-channel widths of glacier-draining rivers in 2009 to the distance of glacier retreat between 1913 and 1994 showed no correlation, suggesting that geomorphic disturbance in river reaches directly downstream of glaciers is not strongly governed by the degree of glacial retreat. In contrast, there was a correlation between active-channel width and the percentage of superglacier debris mantling the glacier, as measured in 1971. A conceptual model of sediment delivery processes from the mountain indicates that rockfalls, glaciers, debris flows, and main-stem flooding act sequentially to deliver sediment from Mount Rainier to river reaches in the Puget Lowland over decadal time scales. Greater-than-normal runoff was associated with cool phases of the Pacific Decadal Oscillation. Streamflow-gaging station data from four unregulated rivers directly draining Mount Rainier indicated no statistically significant trends of increasing peak flows over the course of the 20th century. The total sediment load of the upper Nisqually River from 1945 to 2011 was determined to be 1,200,000±180,000 tonnes/yr. The suspended-sediment load in the lower Puyallup River at Puyallup, Washington, was 860,000±300,000 tonnes/yr between 1978 and 1994, but the long-term load for the Puyallup River likely is about 1,000,000±400,000 tonnes/yr. Using a coarse-resolution bedload transport relation, the long-term average bedload was estimated to be about 30,000 tonnes/yr in the lower White River near Auburn, Washington, which was four times greater than bedload in the Puyallup River and an order of magnitude greater than bedload in the Carbon River. Analyses indicate a general increase in the sediment loads in Mount Rainier rivers in the 1990s and 2000s relative to the time period from the 1960s to 1980s. Data are insufficient, however, to determine definitively if post-1990 increases in sediment production and transport from Mount Rainier represent a statistically significant increase relative to sediment-load values typical from Mount Rainier during the entire 20th century. One-dimensional river-hydraulic and sediment-transport models simulated the entrainment, transport, attrition, and deposition of bed material. Simulations showed that bed-material loads were largest for the Nisqually River and smallest for the Carbon River. The models were used to simulate how increases in sediment supply to rivers transport through the river systems and affect lowland reaches. For each simulation, the input sediment pulse evolved through a combination of translation, dispersion, and attrition as it moved downstream. The characteristic transport times for the median sediment-size pulse to arrive downstream for the Nisqually, Carbon, Puyallup, and White Rivers were approximately 70, 300, 80, and 60 years, respectively.
Book Synopsis A Sediment Budget of Hydraulic Gold-mining Sediment, Steephollow Creek Basin, California, 1853-1997 by : Jennifer Anne Curtis
Download or read book A Sediment Budget of Hydraulic Gold-mining Sediment, Steephollow Creek Basin, California, 1853-1997 written by Jennifer Anne Curtis and published by . This book was released on 1999 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings, AWRA's 1999 Annual Water Resources Conference by : American Water Resources Association. Conference
Download or read book Proceedings, AWRA's 1999 Annual Water Resources Conference written by American Water Resources Association. Conference and published by . This book was released on 1999 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Total Maximum Daily Loads for Sediment by :
Download or read book Total Maximum Daily Loads for Sediment written by and published by . This book was released on 1998 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rapid Evaluation of Sediment Budgets by : Leslie M. Reid
Download or read book Rapid Evaluation of Sediment Budgets written by Leslie M. Reid and published by . This book was released on 1996 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many land-management decisions would be aided by an understanding of the current sediment production and transport regime in a watershed and of the likely effects of planned land use on that regime. Sediment budgeting can provide this information quickly and at low cost if reconnaissance techniques are used to evaluate the budget. Efficient budget construction incorporates seven steps: careful definition of the problem to be addressed; collection of background information; subdivision of the project area into uniform sub-areas; interpretation of aerial photographs; fieldwork; analysis; and checking of results. Methods used in field-work and analysis must be selected according to the types of hillslope and channel processes active, the goals of the analysis, and the level of precision required. Methods for evaluating erosion and sediment transport rates are described, and four examples are given to demonstrate budget applications and construction.
Book Synopsis Changes in Channel-stored Sediment, Redwood Creek, Northwestern California 1947 to 1980 by : Mary Ann Madej
Download or read book Changes in Channel-stored Sediment, Redwood Creek, Northwestern California 1947 to 1980 written by Mary Ann Madej and published by . This book was released on 1992 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sediment Budget of the Middle Reach Skagit River, Washington 1937-2015 Reveals Decadal Variations in Sediment Export and Storage by : Amelia Deuell Rothleutner
Download or read book Sediment Budget of the Middle Reach Skagit River, Washington 1937-2015 Reveals Decadal Variations in Sediment Export and Storage written by Amelia Deuell Rothleutner and published by . This book was released on 2017 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evaluation of historical meandering since 1937 shows that the active floodplain of the middle reach Skagit River between Rockport and Sedro-Woolley, Washington, has periodically been a significant source of sediment to the lower Skagit River and delta. In response to recent findings that the Sauk-Suiattle on average only supplies approximately 30% of the sediment load observed at Mount Vernon, I examined the geomorphic change and potential sediment production of the middle reach to test whether it is a significant source to the lower river. I tested the hypothesis that the 20-mile (32-km) middle reach has been a net source of sediment to the delta, at least since the mid-2000s that comprehensive sediment load monitoring has been conducted at Mount Vernon. A new tool constructed with ArcGIS model builder that integrates analyses of lateral meander migration from aerial photogrammetry with digital elevation data (e.g. lidar) automates the calculation of sediment volume produced by bank erosion versus stored in bars, islands, and side channels through time. While the results reveal changes in net sediment production through time, they show that for the period 2006 through 2015, recruitment of floodplain sediment from the middle reach to the active channel produced ~27% of the annual sediment mean load measured at Mount Vernon. The sediment source was dominated by lateral incision at rates of 3-8 m/yr in several areas of high-relief (3-15 m) banks characterized by unconsolidated, friable glacial outwash or lahar deposits. Decadal-scale sediment production from the floodplain to the active channel associated with highest meander rates and storage within the reach correlate with periods of frequent moderate floods, whereas periods of net sediment export to the lower river correlate with highest peak flows that presumably erode and flush sediment from the system. These results help quantify recent channel dynamics, rates of change, and sources of sediment that influence sediment transport and recent sediment aggradation patterns downstream, that are in turn important to flood risk and salmon habitat. The results and model also help inform decision makers how these sources of sediment and their impacts may change with projected increases in the magnitude and frequency of floods and sediment production expected with climate change across the Pacific Northwest. The methods and model developed in this study can be readily applied to other systems with historical time-series of mapped floodplain and channel changes to evaluate sediment budgets and impacts to habitats associated with meandering behavior.
Book Synopsis Issaquah Creek Basin Current/future Conditions and Source Identification Report by : King County (Wash.). Department of Public Works
Download or read book Issaquah Creek Basin Current/future Conditions and Source Identification Report written by King County (Wash.). Department of Public Works and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: