Download or read book Umpqua River Basin Oregon written by United States. Bureau of Reclamation and published by . This book was released on 1956 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book River Basin Reports Umpqua River Basin written by Oregon. State Water Resources Board and published by . This book was released on 1958 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Umpqua River Basin written by Oregon. State Water Resources Board and published by . This book was released on 1958 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Channel Change and Bed material Transport in the Umpqua River Basin Oregon written by U.S. Department of the Interior and published by . This book was released on 2014-10-09 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Umpqua River drains 12,103 square kilometers of western Oregon, with headwaters in the Cascade Range, the river flows through portions of the Klamath Mountains and Oregon Coast Range before entering the Pacific Ocean.
Download or read book Analysis of Fixed station Water quality Data in the Umpqua River Basin Oregon written by Joseph F. Rinella and published by . This book was released on 1986 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Umpqua River Basin Milltown Hill Project Dam and Reservoir Construction and Operation Elk Creek Subbasin Douglas County written by and published by . This book was released on 1992 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Channel Change and Bed Material Transport in the Umpqua River Basin Oregon written by U.S. Department of the Interior and published by CreateSpace. This book was released on 2014-03-30 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Umpqua River drains 12,103 km2 of western Oregon, heading in the Cascade Range and draining portions of the Klamath Mountains and Coast Range before entering the Pacific Ocean.
Download or read book Ethnohistory of the South Umpqua River Basin written by Oregon State University and published by . This book was released on 1975 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Water Problems and Hydrologic Characteristics of the Umpqua Basin written by G. L. Hayes and published by . This book was released on 1960 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water Quality Standards for Umpqua River Basin Oregon written by and published by . This book was released on 1969 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book South Umpqua River Basin Water Quality Management Plan written by Umpqua Regional Council of Governments and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Umpqua River Oregon written by United States. Army. Corps of Engineers. Portland District and published by . This book was released on 1961 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book River Mile Index Umpqua River and Tributaries written by and published by . This book was released on 1966 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Fixed station Water quality Data in the Umpqua River Basin Oregon written by Joseph F. Rinella and published by . This book was released on 1986 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Umpqua River Basin Master Plan for Angler Access and Associated Recreational Uses written by Oregon. State Game Commission. Lands Division and published by . This book was released on 1967 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Channel Change and Bed material Transport in the Umpqua River Basin Oregon written by and published by . This book was released on 2011 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Umpqua River drains 12,103 square kilometers of western Oregon; with headwaters in the Cascade Range, the river flows through portions of the Klamath Mountains and Oregon Coast Range before entering the Pacific Ocean. Above the head of tide, the Umpqua River, along with its major tributaries, the North and South Umpqua Rivers, flows on a mixed bedrock and alluvium bed, alternating between bedrock rapids and intermittent, shallow gravel bars composed of gravel to cobble-sized clasts. These bars have been a source of commercial aggregate since the mid-twentieth century. Below the head of tide, the Umpqua River contains large bars composed of mud and sand. Motivated by ongoing permitting and aquatic habitat concerns related to in-stream gravel mining on the fluvial reaches, this study evaluated spatial and temporal trends in channel change and bed-material transport for 350 kilometers of river channel along the Umpqua, North Umpqua, and South Umpqua Rivers. The assessment produced (1) detailed mapping of the active channel, using aerial photographs and repeat surveys, and (2) a quantitative estimation of bed-material flux that drew upon detailed measurements of particle size and lithology, equations of transport capacity, and a sediment yield analysis. Bed-material transport capacity estimates at 45 sites throughout the South Umpqua and main stem Umpqua Rivers for the period 1951-2008 result in wide-ranging transport capacity estimates, reflecting the difficulty of applying equations of bed-material transport to a supply-limited river. Median transport capacity values calculated from surface-based equations of bedload transport for each of the study reaches provide indications of maximum possible transport rates and range from 8,000 to 27,000 metric tons per year (tons/yr) for the South Umpqua River and 20,000 to 82,000 metric tons/yr for the main stem Umpqua River upstream of the head of tide; the North Umpqua River probably contributes little bed material. A plausible range of average annual transport rates for the South and main stem Umpqua Rivers, based on bedload transport capacity estimates for bars with reasonable values for reference shear stress, is between 500 and 20,000 metric tons/yr. An empirical bed-material yield analysis predicts 20,000-50,000 metric tons/yr on the South Umpqua River and main stem Umpqua River through the Oregon Coast Range, decreasing to approximately 30,000 metric tons/yr at the head of tide. Surveys of individual mining sites in the South Umpqua River indicate minimum local bed-material flux rates that are typically less than 10,000 metric tons/yr but range up to 30,600 metric tons/yr in high-flow years. On the basis of all of these analyses, actual bedload flux in most years is probably less than 25,000 metric tons/yr in the South Umpqua and main stem Umpqua Rivers, with the North Umpqua River probably contributing negligible amounts. For comparison, the estimated annual volume of commercial gravel extraction from the South Umpqua River between 2001 and 2004 ranged from 610 to 36,570 metric tons, indicating that historical in-stream gravel extraction may have been a substantial fraction of the overall bedload flux.
Download or read book Umpqua River Basin Cultural History Phase I Research written by Thomas C. Hogg and published by . This book was released on 1979 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
