Benthic algal flora of four rivers of the middle Willamette River Basin
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Benthic algal flora of four rivers of the middle Willamette River Basin

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Published .
Written in English


  • Freshwater algae -- Oregon -- Willamette River Watershed.

Book details:

Edition Notes

Statementby Leona Esther Todd.
The Physical Object
Pagination[9], 108 leaves, bound :
Number of Pages108
ID Numbers
Open LibraryOL14242658M

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Benthic algal assemblages, water chemistry, and habitat were characterized at 25 stream sites in the Willamette Basin, Oregon, during low flow in Seventy-three algal samples yielded taxa — Cited by: DISSOLVED-OXYGEN AND ALGAL CONDITIONS IN SELECTED LOCATIONS OF THE WILLAMETTE RIVER BASIN, OREGON By Frank A. Rinella, Stuart W. McKenzie, and Stephen A. Wille ABSTRACT During July and August , the U.S. Geological Survey, in cooperation with the Oregon Department of Environmental Quality, made three intensiveCited by: 5. Within the Willamette River basin, environmental flow guidelines were developed in Phase 1 studies for the Coast and Middle Fork Willamette River basins. USGS involvement with the Sustainable Rivers Project began with environmental flow studies for the McKenzie and . The Willamette River Basin Planning Atlas offers a valuable resource for anyone interested in the region's past, present, and future. Using a dazzling variety of color maps, charts, and photographs, the Atlas presents a vast amount of information intended to provide a long-term, large-scale view of changes in human and natural systems within.

The river and its principal tributaries dr square miles (12 percent of Oregon), with the basin's runoff fluctuating dramatically between the heavy precipitation of the winter months and relatively rain-free summers. The Willamette River Basin is approximately miles in . The Middle Willamette River Basin encompasses an area of 5, square miles, 45 percent of the entire Willamette River Basin and percent of the total area of Oregon. The basin is composed of three physiographic provinces, the Coast Range uplift on the west, the Wil-.   Figure 4. Biological condition of Willamette basin rivers and streams by major land use class. .. 14 Figure 5. Locations of randomly selected stream and . The mainstem Willamette flows miles north from the confluence of the Middle and Coast Fork Willamette Rivers, to its confluence with the Columbia River. Bound by the Cascade Mountain Range to the east and the Coast Range to the west, the Willamette Basin is the largest watershed entirely con.

Distribution of fish, benthic invertebrate, and algal communities in relation to physical and chemical conditions, Yakima River Basin, Washington, Water-Resources Investigations Report By Thomas F Cuffney, Michael R Meador, Stephen D Porter, . Willamette River Basin, presents the re- sults of a painstaking study of the water quality of the Willamette River system, the uses of the river system, the factors that affect water quality, the probable nature of the economic development of the watershed and its impact on water quality, and the nature of measures that must be taken both to. Gage, Middle Fork Willamette River for period of post-dam completion Figure Annual peak discharges at the Jasper gage, Middle Fork of the Willamette River Figure Draft flood frequency (exceedence curves) for the Middle Fork Willamette River at Jasper Figure Flow duration curve for the Middle Fork Willamette River at Jasper Figure AbstractEcological responses to dam construction are poorly understood, especially for downstream benthic algal communities. We examined the responses of benthic algal communities in downstream reaches of a tributary of the Xiangxi River, China, to the construction of a small run-of-river dam. From February to August , benthic algae, chemical factors, and habitat characteristics were Cited by: