Download PDF by : A Peculiar River

ISBN-10: 0875903568

ISBN-13: 9780875903569

ISBN-10: 1118665732

ISBN-13: 9781118665732

Published by way of the yank Geophysical Union as a part of the Water technological know-how and alertness Series.

The Deschutes is a "peculiar" dammed river in Oregon. Its dramatic juxtaposition of geology, topography, and weather offers a digital textbook of landforms and geomorphic techniques revealing Quaternary, Holocene, and extremely contemporary occasions of big value. alongside the energetic volcanism and tectonism, the current riverine panorama displays this episodic geomorphic heritage, as remnants of fluviatle beneficial properties, large bars and boulders, mantle the panorama. A odd River: Geology, Geomorphology, and Hydrology of the Deschutes River, Oregon tells a desirable tale a few "striking, occasionally intimidating, panorama that serves to question generalities and is a laboratory during which to review distinct landforms and the strategies that produce them."Content:

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Such events and processes that operate over longer time scales are important in controlling valley geomorphology and the transport of sediment into the Deschutes River system. Thus, a key to assessing the effects of Deschutes River basin dams on river, channel, and valley bottom conditions is the role of the modern sediment transport regime relative to sed­ iment yield and delivery events that occur over geologic River Mile 125 100 75 50 25 0 Deschutes River Distance from Columbia River Confluence, in kilometers Figure 15.

Q indi­ cates the discharge for which xx percent of discharges are greater. x x a) Oregon rivers with mean discharge similar to the Deschutes River. All these rivers except the John Day are regulated. 0 15 1907-2000 221 15 b) Rivers in the upper Deschutes River basin. 62 210 580 Runoff-dominated streams What are the principal geologic and hydrologic characteris­ tics of the basin that control the rates and distribution of recharge? 33 Deer Creek Cultus Creek 1938-1991 1938-1991 34 GROUNDWATER HYDROLOGY OF THE UPPER DESCHUTES BASIN describe the temporal and spatial pattern of groundwater discharge and recharge in relation to the geological setting.

In the southern basin, however, shallow groundwater flows from the Cascade Range southward toward Crane Prairie and Wickiup Reservoirs before moving toward the L a Pine subbasin. This is due to the presence of a topographic ridge formed by Mount Bachelor and the chain of associated vol­ canoes to the south. Sparse head data and geologic information suggests that groundwater flows radially outward from Newberry Volcano. Groundwater that enters the L a Pine subbasin from Newberry Volcano and the Cascade Range continues north­ eastward toward the Bend area and then northward toward the Deschutes-Crooked River confluence.

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A Peculiar River

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