Download or read book Selection of Streamflow and Reservoir release Models for River quality Assessment written by Marshall E. Jennings and published by . This book was released on 1976 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Selection of streamflow and reservoir release models for river quality assessment written by and published by . This book was released on 1976 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book River quality Assessment of the Willamette River Basin Oregon written by Marshall E. Jennings and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geological Survey Circular written by and published by . This book was released on 1975 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book New Publications of the Geological Survey written by Geological Survey (U.S.) and published by . This book was released on 1976 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reservoir system Model for the Willamette River Basin Oregon written by James O. Shearman and published by . This book was released on 1976 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: For nearly half a century the Willamette River in Oregon experienced severe dissolved-oxygen problems related to large loads of organically rich waste waters from industries and municipalities. Since the mid-1950 's dissolved oxygen quality has gradually improved owing to low-flow augmentation, the achievement of basinwide secondary treatment, and the use of other waste-management practices. As a result, summer dissolved-oxygen levels have increased, salmon runs have returned, and the overall effort is widely regarded as a singular water-quality success. To document the improved dissolved-oxygen regimen, the U.S. Geological Survey conducted intensive studies of the Willamette during the summer low-flow seasons of 1973 and 1974. During each summer the mean daily dissolved-oxygen levels were found to be higher than 5 milligrams per liter throughout the river. Because of the basinwide secondary treatment, carbonaceous deoxygenation rates were low. In addition, almost half of the biochemical oxygen demand entering the Willamette was from diffuse (nonpoint) sources rather than outfalls. These results indicated that point-source biochemical oxygen demand was no longer the primary cause of dissolved-oxygen depletion. Instead, the major causes of deoxygenation were nitrification in a shallow ' surface active ' reach below Salem and an anomalous oxygen demand (believed to be primarily of benthal origin) in Portland Harbor.

Download or read book Methodology for River quality Assessment with Application to the Willamette River Basin Oregon written by David A. Rickert and published by . This book was released on 1976 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Planning Alternatives for Maintaining Desirable Dissolved oxygen Concentrations in the Willamette River Oregon written by David A. Rickert and published by . This book was released on 1976 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Water Quality Evaluation of Aquatic Systems written by R. G. Willey and published by . This book was released on 1975 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several example applications of water quality models were discussed to provide background into the development of a comprehensive mathematical model capable of evaluating water quality conditions in any river-reservoir system. A need exists for a river-reservoir water quality model which can be continuously updated and maintained with the best available concepts. The 'Water Quality for River-Reservoir Systems' (WQRRS) model was developed by the Hydrologic Engineering Center (HEC) to meet these needs. The HEC continuously updates the WQRRS based on the advantages of water quality research work brought to their attention. (Author).

Download or read book List of U S Geological Survey Geologic and Water supply Reports and Maps for Alaska written by Geological Survey (U.S.) and published by . This book was released on 1987 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1977 with total page 992 pages. Available in PDF, EPUB and Kindle. Book excerpt: February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1990 with total page 1180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Computer Models for Water Resources Planning and Management written by Ralph A. Wurbs and published by DIANE Publishing. This book was released on 1997-04 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report is designed to help water managers & planners who are not expert in modeling, & modeling experts in one area who are interested in surveying available models in another area. Covers: model development & distribution org's.; general-purpose software; demand forecasting & balancing supply with demand; water distribution system models; ground water models; watershed runoff models; stream, hydraulics models; river & reservoir water quality models; & reservoir/river system operation models. Inventory of selected models appendix. Tables.

Download or read book United States Geological Survey Yearbook written by Geological Survey (U.S.) and published by . This book was released on 1977 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book United States Geological Survey Annual Report written by Geological Survey (U.S.). and published by . This book was released on 1975 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Review of the New York City Watershed Protection Program written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2020-12-04 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: New York City's municipal water supply system provides about 1 billion gallons of drinking water a day to over 8.5 million people in New York City and about 1 million people living in nearby Westchester, Putnam, Ulster, and Orange counties. The combined water supply system includes 19 reservoirs and three controlled lakes with a total storage capacity of approximately 580 billion gallons. The city's Watershed Protection Program is intended to maintain and enhance the high quality of these surface water sources. Review of the New York City Watershed Protection Program assesses the efficacy and future of New York City's watershed management activities. The report identifies program areas that may require future change or action, including continued efforts to address turbidity and responding to changes in reservoir water quality as a result of climate change.

Download or read book Library of Congress Catalogs written by Library of Congress and published by . This book was released on 1979 with total page 1028 pages. Available in PDF, EPUB and Kindle. Book excerpt: