Dissolved-oxygen regimen of the Willamette River, Oregon, under conditions of basinwide secondary treatment

Hines, Walter G.; McKenzie, Stuart W.; Rickert, David A.; Rinella, Frank A.

doi:10.3133/cir715i

Cited by 22 publications

(8 citation statements)

References 2 publications

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“…It encompasses three aquatic ecoregions ( Figure 1; Table 1). Reservoirs on the tributaries in the Cascade Mountains yield 95% of the river's summer flow, which results in higher summer flows, lower water temperatures, and lower biological oxygen demand (BOD) than expected naturally (Hines et al 1977). Without low-flow augmentation from these reservoirs, dissolved oxygen concentrations in the lower Willamette would fall below the target minimum of 5 mg/L for up to 2 months each year.…”

Section: Study Areamentioning

confidence: 99%

Longitudinal Changes in Fish Assemblages and Water Quality in the Willamette River, Oregon

Hughes

Gammon

1987

Transactions of the American Fisheries Society

199

168

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A survey of the fish assemblages between fiver kilometer 283 and 2 of the mainstem Willamette River, Oregon, was conducted in 1983 to evaluate the effects of improved water quality on longitudinal changes in fish assemblages and the usefulness of two indices of fish assemblage quality (index of well being and index of biotic integrity). Physical and chemical habitat quality and fish assemblage quality showed gradual, similar, and expected declines from the upper to the lower river, with only small changes near large point sources of pollution. More fish species, more species intolerant of poor habitat quality, and fewer species tolerant of poor habitat occurred in 1983 than in 1945. Stream order was not a predictor of fish assemblage patterns. A modification of the index of biotic integrity appeared to reflect changes in fish assemblage patterns and habitat quality better than the index of well being. A logical river classification is needed to study and manage 1otic ecosystems efficiently and to organize what we know of them. This classification should provide an improved perspective for thinking about rivers and serve as a guide for understanding relationships among sections of a river, among rivers, and between rivers and their watersheds. Since the 1950s, stream order (Strahler 1957) has been used as a framework for organizing information about 1otic processes and distribution patterns oflotic organisms (Kuehne 1962; Lotrich 1973; Vannote et al. 1980). It has been especially useful for explaining the patterns of fish distribution and diversity in small streams of the eastern and central United States (Kuehne 1962; Harrel et al. 1967; Whiteside and McNatt 1972; Lotrich 1973; Fausch et al. 1984). A formal model of fish assemblage-stream order relationships suggests that the assemblages should change most abruptly at or near places where stream order changes (Lotrich 1973). A corollary of that model is that only subtle changes occur within a single order. The prevailing model more closely resembles that of Fausch et al. (1984), who suggested that assemblages change gradually with order. A third model suggests that fish assemblages change abruptly or gradually because of abrupt or gradual changes in physicochemical habitat (Matthews 1986). Two indices of fish assemblage quality have been proposed. The index of well being (IWB) incorporates two diversity and two abundance estimates with approximately equal weight (Gammon 1976, 1980). The composite value reflects fish assemblage quality more realistically than a single estimate of species diversity or abundance. The index of biotic integrity (IBI) aggregates six speciescomposition metrics, three trophic-composition metrics, and three fish-condition metrics (Karr 1981). Scoring criteria for each metric are based on data from high-quality fish assemblages. Both the IWB and the IBI were developed and tested on fish assemblages in the Mississippi River drainage. Their applicability to the depauperate (in terms of species and families) ichthyofauna of the Columbia River...

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Section: Study Areamentioning

confidence: 99%

Longitudinal Changes in Fish Assemblages and Water Quality in the Willamette River, Oregon

Hughes

Gammon

1987

Transactions of the American Fisheries Society

199

168

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“…These reported values for water column net productivity are based on several assumptions and can be considered only as estimates. N evertheless, the values are in general accord with the DO regimen of the W illamette as described by Hines, McKenzie, Rickert, and Rinella (1977).…”

Section: Com Par Iso N With Historical Datamentioning

confidence: 58%

Algal conditions and the potential for future algal problems in the Willamette River, Oregon

Rickert¹,

Petersen²,

McKenzie³

et al. 1977

Circular

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FOREWORDThe American public has identified the enhancement and protection of river quality as an important national goal, and recent laws have given this commitment considerable force. As a consequence, a considerable investment has been made in the past few years to improve the quality of the Nation's rivers. Further improvements will require substantial expenditures and the consumption of large amounts of energy. For these reasons, it is important that alternative plans for river-quality management be scientifically assessed in terms of their relative ability to produce environmental benefits. To aid this endeavor, this circular series presents a case history of an intensive river-quality assessment in the Willamette River basin, Oregon.The series examines approaches to and results of critical aspects of riverquality assessment. The first several circulars describe approaches for providing technically sound, timely information for river-basin planning and management. Specific topics include practical approaches to mathematical modeling, analysis of river hydrology, analysis of earth resources-river quality relations, and development of data-collection programs for assessing specific problems. The later circulars describe the application of approaches to existing or potential river-quality problems in the Willamette River basin. Specific topics include maintenance of high-level dissolved oxygen in the river, effects of reservoir release patterns on downstream river quality, algal growth potential, distribution of toxic metals, and the significance of erosion potential to proposed future land and water uses.Each circular is the product of a study devoted to developing resource information for general use. The circulars are written to be informative and useful to informed laymen, resource planners, and resource scientists. This design stems from the recognition that the ultimate success of river-quality assessment depends on the clarity and utility of approaches and results as well as their basic scientific validity.Individual circulars will be published in an alphabetical sequence in the Geological Survey Circular 715 series entitled uRiver-Quality Assessment of the Willamette River Basin, Oregon." Concentrations of nitrogen, phosphorus, and Lovv-temperature limitation ____________________ 25Major nutrient limitation________________________ 28 August 7, 1973 ----------------- ------------------------------------------------------------------------10 6. Hydrograph of the Willamette River at Portland, 1974 ----------------------------------------------11 --------------------------------------------- . Stephanodiscus hantzschii __________________________________________________ ----------------14 10. Achnanthes minutissima _____________________________________________________ -------------__ 14 11. Melosira distans ______________________________________________________________ ------------15 Cymbella uentricosa ------------------------------------------------------------------------15 13. Asterionella formo...

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“…The CBOD in water samples collected during the 24-hour study on September 23-24, 1975, was analyzed using a procedure described by Hines, McKenzie, Rickert, and Renella (1977). Using this technique, DO concentrations in the sample bottles were measured initially and then remeasured 1, 2, 3 r 4, 5, 6, 8, 10, 12, 15, and 20 days after the initial measurement.…”

Section: Data-reduction Techniquesmentioning

confidence: 99%

Analysis of waste-load assimilative capacity of the Yampa River, Steamboat Springs to Hayden, Routt County, Colorado

Bauer¹,

Steele²,

Anderson³

1978

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An analysis of the waste-load assimilative capacity of the Yampa River from Steamboat Springs to Hayden, Colo., was made to obtain information on the effects of projected waste loadings on this stream reach. Simulations of effects of waste loadings on streamflow quality were made using a steady-state water-quality model. The simulations were based on 7-day low-flow values with a 10-year recurrence interval and population projections for 2010. Model results for December and September streamflow conditions indicated that a recommended water-quality standard of 0.02 milligram per liter for nonionized ammonia concentration would be exceeded. Model simulations also included the effect of a flow augmentation of 20 cubic feet per second (0.56 cubic meter per second) from a proposed upstream reservoir. The permissible ammonia loading in the study reach could be increased approximately 25 percent with this amount of flow augmentation. Simulations of concentrations of other water-quality variables indicated that water-quality goals

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Dissolved-oxygen regimen of the Willamette River, Oregon, under conditions of basinwide secondary treatment

Abstract: 25 14. Graph showing inorganic nitrogen concentration in the Willamette River during August 12-14, 1974 ______ 25 15. Graphs showing summertime (low-flow condition) diel DO curves at various sites on Willamette River and tributaries,

Cited by 22 publications

References 2 publications

Longitudinal Changes in Fish Assemblages and Water Quality in the Willamette River, Oregon

Longitudinal Changes in Fish Assemblages and Water Quality in the Willamette River, Oregon

Algal conditions and the potential for future algal problems in the Willamette River, Oregon

Analysis of waste-load assimilative capacity of the Yampa River, Steamboat Springs to Hayden, Routt County, Colorado

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