Stewart Rounds (Former Employee)
Science and Products
Filter Total Items: 67
Macrophyte and pH buffering updates to the Klamath River water-quality model upstream of Keno Dam, Oregon Macrophyte and pH buffering updates to the Klamath River water-quality model upstream of Keno Dam, Oregon
A hydrodynamic, water temperature, and water-quality model of the Link River to Keno Dam reach of the upper Klamath River was updated to account for macrophytes and enhanced pH buffering from dissolved organic matter, ammonia, and orthophosphorus. Macrophytes had been observed in this reach by field personnel, so macrophyte field data were collected in summer and fall (June-October) 2011...
Authors
Annett B. Sullivan, Stewart A. Rounds, Jessica R. Asbill-Case, Michael L. Deas
Development of CE-QUAL-W2 models for the Middle Fork Willamette and South Santiam Rivers, Oregon Development of CE-QUAL-W2 models for the Middle Fork Willamette and South Santiam Rivers, Oregon
Hydrodynamic (CE-QUAL-W2) models of Hills Creek Lake (HCL), Lookout Point Lake (LOP), and Dexter Lake (DEX) on the Middle Fork Willamette River (MFWR), and models of Green Peter Lake and Foster Lake on the South Santiam River systems in western Oregon were updated and recalibrated for a wide range of flow and meteorological conditions. These CE-QUAL-W2 models originally were developed by...
Authors
Norman L. Buccola, Adam J. Stonewall, Annett B. Sullivan, Yoonhee Kim, Stewart A. Rounds
Technical evaluation of a total maximum daily load model for Upper Klamath and Agency Lakes, Oregon Technical evaluation of a total maximum daily load model for Upper Klamath and Agency Lakes, Oregon
We reviewed a mass balance model developed in 2001 that guided establishment of the phosphorus total maximum daily load (TMDL) for Upper Klamath and Agency Lakes, Oregon. The purpose of the review was to evaluate the strengths and weaknesses of the model and to determine whether improvements could be made using information derived from studies since the model was first developed. The new...
Authors
Tamara M. Wood, Susan A. Wherry, James L. Carter, James S. Kuwabara, Nancy S. Simon, Stewart A. Rounds
Simulating potential structural and operational changes for Detroit Dam on the North Santiam River, Oregon, for downstream temperature management Simulating potential structural and operational changes for Detroit Dam on the North Santiam River, Oregon, for downstream temperature management
Detroit Dam was constructed in 1953 on the North Santiam River in western Oregon and resulted in the formation of Detroit Lake. With a full-pool storage volume of 455,100 acre-feet and a dam height of 463 feet, Detroit Lake is one of the largest and most important reservoirs in the Willamette River basin in terms of power generation, recreation, and water storage and releases. The U.S...
Authors
Norman L. Buccola, Stewart A. Rounds, Annett B. Sullivan, John C. Risley
Dissolved oxygen analysis, TMDL model comparison, and particulate matter shunting—Preliminary results from three model scenarios for the Klamath River upstream of Keno Dam, Oregon Dissolved oxygen analysis, TMDL model comparison, and particulate matter shunting—Preliminary results from three model scenarios for the Klamath River upstream of Keno Dam, Oregon
Efforts are underway to identify actions that would improve water quality in the Link River to Keno Dam reach of the Upper Klamath River in south-central Oregon. To provide further insight into water-quality improvement options, three scenarios were developed, run, and analyzed using previously calibrated CE-QUAL-W2 hydrodynamic and water-quality models. Additional scenarios are under...
Authors
Annett B. Sullivan, Stewart A. Rounds, Michael L. Deas, I. Ertugrul Sogutlugil
Applications of fluorescence spectroscopy for predicting percent wastewater in an urban stream Applications of fluorescence spectroscopy for predicting percent wastewater in an urban stream
Dissolved organic carbon (DOC) is a significant organic carbon reservoir in many ecosystems, and its characteristics and sources determine many aspects of ecosystem health and water quality. Fluorescence spectroscopy methods can quantify and characterize the subset of the DOC pool that can absorb and re-emit electromagnetic energy as fluorescence and thus provide a rapid technique for
Authors
Jami H. Goldman, Stewart A. Rounds, Joseph A. Needoba
Non-USGS Publications**
Rounds, S.A. and Pankow, J.F., 1993, Determination of selected chlorinated benzenes in water by purging directly to a capillary column with whole column cryotrapping and electron capture detection: J. Chromatogr., v. 629, p. 321-327. https://doi.org/10.1016/0021-9673(93)87046-O
Rounds, S.A., Tiffany, B.A., and Pankow, J.F., 1993, Description of gas/particle sorption kinetics with an intraparticle diffusion model: desorption experiments: Environ. Sci. Technol., v. 27, p. 366-377. https://doi.org/10.1021/es00039a018
Rounds, S.A. and Pankow, J.F., 1990, Application of a radial diffusion model to describe gas/particle sorption kinetics: Environ. Sci. Technol., v. 24, p. 1378-1386. https://doi.org/10.1021/es00079a012
Bonn, B.A. and Rounds, S.A., 1990, DREAM - Analytical Groundwater Flow Programs: Chelsea, MI, Lewis Publishers, 109 p. https://www.taylorfrancis.com/books/mono/10.1201/9781003069898/dream-bernadine-bonn-stewart-rounds
Larson, R.A., and Rounds, S.A., 1987, Photochemistry in Aqueous Surface Layers: 1-Naphthol: chap. 15, pp 206-214 in Photochemistry of Environmental Aquatic Systems, Zika, R.G. and Cooper, W.J., editors, ACS Symposium Series volume 327, American Chemical Society. https://pubs.acs.org/doi/pdf/10.1021/bk-1987-0327.ch015
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Filter Total Items: 67
Macrophyte and pH buffering updates to the Klamath River water-quality model upstream of Keno Dam, Oregon Macrophyte and pH buffering updates to the Klamath River water-quality model upstream of Keno Dam, Oregon
A hydrodynamic, water temperature, and water-quality model of the Link River to Keno Dam reach of the upper Klamath River was updated to account for macrophytes and enhanced pH buffering from dissolved organic matter, ammonia, and orthophosphorus. Macrophytes had been observed in this reach by field personnel, so macrophyte field data were collected in summer and fall (June-October) 2011...
Authors
Annett B. Sullivan, Stewart A. Rounds, Jessica R. Asbill-Case, Michael L. Deas
Development of CE-QUAL-W2 models for the Middle Fork Willamette and South Santiam Rivers, Oregon Development of CE-QUAL-W2 models for the Middle Fork Willamette and South Santiam Rivers, Oregon
Hydrodynamic (CE-QUAL-W2) models of Hills Creek Lake (HCL), Lookout Point Lake (LOP), and Dexter Lake (DEX) on the Middle Fork Willamette River (MFWR), and models of Green Peter Lake and Foster Lake on the South Santiam River systems in western Oregon were updated and recalibrated for a wide range of flow and meteorological conditions. These CE-QUAL-W2 models originally were developed by...
Authors
Norman L. Buccola, Adam J. Stonewall, Annett B. Sullivan, Yoonhee Kim, Stewart A. Rounds
Technical evaluation of a total maximum daily load model for Upper Klamath and Agency Lakes, Oregon Technical evaluation of a total maximum daily load model for Upper Klamath and Agency Lakes, Oregon
We reviewed a mass balance model developed in 2001 that guided establishment of the phosphorus total maximum daily load (TMDL) for Upper Klamath and Agency Lakes, Oregon. The purpose of the review was to evaluate the strengths and weaknesses of the model and to determine whether improvements could be made using information derived from studies since the model was first developed. The new...
Authors
Tamara M. Wood, Susan A. Wherry, James L. Carter, James S. Kuwabara, Nancy S. Simon, Stewart A. Rounds
Simulating potential structural and operational changes for Detroit Dam on the North Santiam River, Oregon, for downstream temperature management Simulating potential structural and operational changes for Detroit Dam on the North Santiam River, Oregon, for downstream temperature management
Detroit Dam was constructed in 1953 on the North Santiam River in western Oregon and resulted in the formation of Detroit Lake. With a full-pool storage volume of 455,100 acre-feet and a dam height of 463 feet, Detroit Lake is one of the largest and most important reservoirs in the Willamette River basin in terms of power generation, recreation, and water storage and releases. The U.S...
Authors
Norman L. Buccola, Stewart A. Rounds, Annett B. Sullivan, John C. Risley
Dissolved oxygen analysis, TMDL model comparison, and particulate matter shunting—Preliminary results from three model scenarios for the Klamath River upstream of Keno Dam, Oregon Dissolved oxygen analysis, TMDL model comparison, and particulate matter shunting—Preliminary results from three model scenarios for the Klamath River upstream of Keno Dam, Oregon
Efforts are underway to identify actions that would improve water quality in the Link River to Keno Dam reach of the Upper Klamath River in south-central Oregon. To provide further insight into water-quality improvement options, three scenarios were developed, run, and analyzed using previously calibrated CE-QUAL-W2 hydrodynamic and water-quality models. Additional scenarios are under...
Authors
Annett B. Sullivan, Stewart A. Rounds, Michael L. Deas, I. Ertugrul Sogutlugil
Applications of fluorescence spectroscopy for predicting percent wastewater in an urban stream Applications of fluorescence spectroscopy for predicting percent wastewater in an urban stream
Dissolved organic carbon (DOC) is a significant organic carbon reservoir in many ecosystems, and its characteristics and sources determine many aspects of ecosystem health and water quality. Fluorescence spectroscopy methods can quantify and characterize the subset of the DOC pool that can absorb and re-emit electromagnetic energy as fluorescence and thus provide a rapid technique for
Authors
Jami H. Goldman, Stewart A. Rounds, Joseph A. Needoba
Non-USGS Publications**
Rounds, S.A. and Pankow, J.F., 1993, Determination of selected chlorinated benzenes in water by purging directly to a capillary column with whole column cryotrapping and electron capture detection: J. Chromatogr., v. 629, p. 321-327. https://doi.org/10.1016/0021-9673(93)87046-O
Rounds, S.A., Tiffany, B.A., and Pankow, J.F., 1993, Description of gas/particle sorption kinetics with an intraparticle diffusion model: desorption experiments: Environ. Sci. Technol., v. 27, p. 366-377. https://doi.org/10.1021/es00039a018
Rounds, S.A. and Pankow, J.F., 1990, Application of a radial diffusion model to describe gas/particle sorption kinetics: Environ. Sci. Technol., v. 24, p. 1378-1386. https://doi.org/10.1021/es00079a012
Bonn, B.A. and Rounds, S.A., 1990, DREAM - Analytical Groundwater Flow Programs: Chelsea, MI, Lewis Publishers, 109 p. https://www.taylorfrancis.com/books/mono/10.1201/9781003069898/dream-bernadine-bonn-stewart-rounds
Larson, R.A., and Rounds, S.A., 1987, Photochemistry in Aqueous Surface Layers: 1-Naphthol: chap. 15, pp 206-214 in Photochemistry of Environmental Aquatic Systems, Zika, R.G. and Cooper, W.J., editors, ACS Symposium Series volume 327, American Chemical Society. https://pubs.acs.org/doi/pdf/10.1021/bk-1987-0327.ch015
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.