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Download or read book Eutrophication of Surface Waters written by Lake Tahoe Area Council and published by . This book was released on 1975 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Eutrophication of Surface Waters written by Lake Tahoe Area Council and published by . This book was released on 1975 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Eutrophication of Surface Waters written by Lake Tahoe Area Council and published by . This book was released on 1972 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author: Percy Harold McGauhey
Publisher:
Published: 1972
Total Pages: 176
ISBN-13:
DOWNLOAD EBOOKA survey was made of nutrient and other chemical constituents of surface waters from developed and undeveloped land areas, sewage effluents, seepage from septic tank percolation system and refuse fills, drainage from swamps, precipitation, and Lake Tahoe water. Algal growth stimulating potential of the samples were bioassayed with Selenastrum gracile as a test organism. Algal response to nutrients was measured by maximum growth rate and maximum cell count in a 5-day growth period. Ponds simulating the shallow portions of the lake were used for continuous flow assay of the biomass of indigenous lake organisms produced by sewage effluent. Flask assays and chemical analyses were made over two years on three major creeks. Twenty-eight other creeks and precipitations were monitored by chemical analysis. Evaluating the eutrophication potential, Lake Tahoe is nitrogen sensitive and responds to it in proportion to its concentration.
Download or read book Eutrophication of Surface Waters--Lake Tahoe written by Percy Harold McGauhey and published by . This book was released on 1972 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: A survey was made of nutrient and other chemical constituents of surface waters from developed and undeveloped land areas, sewage effluents, seepage from septic tank percolation system and refuse fills, drainage from swamps, precipitation, and Lake Tahoe water. Algal growth stimulating potential of the samples were bioassayed with Selenastrum gracile as a test organism. Algal response to nutrients was measured by maximum growth rate and maximum cell count in a 5-day growth period. Ponds simulating the shallow portions of the lake were used for continuous flow assay of the biomass of indigenous lake organisms produced by sewage effluent. Flask assays and chemical analyses were made over two years on three major creeks. Twenty-eight other creeks and precipitations were monitored by chemical analysis. Evaluating the eutrophication potential, Lake Tahoe is nitrogen sensitive and responds to it in proportion to its concentration.
Author: Percy Harold McGauhey
Publisher:
Published: 1971
Total Pages: 136
ISBN-13:
DOWNLOAD EBOOKThe water impounded at Indian Creek Reservoir near Lake Tahoe, California is approximately one-third surface runoff and direct precipitation and two-thirds reclaimed water exported from South Tahoe Public Utility District Plant. Discussed are the results of tests which determined the temporal changes and relationships between water quality characteristics of Indian Creek Reservoir and those of the reclaimed water. Initially the reservoir would not support fish life, but as the reservoir matured, ammonia levels declined to less than 4 mg/l and by 1970 it was an excellent trout fishery. Approximately 70% of the ammonia nitrogen was lost to the atmosphere by nitrification-denitrification. Good biological productivity indicated access to other phosphorus sources, probably runoff. Relative to conductivity and chemical components the water is of good irrigation quality. Various parameters showed that the reservoir responds to more complex factors than those measurable in the reclaimed waste water, raising the question of the effectiveness of tertiary treatment for recreational impoundments.
Download or read book Eutrophication of Surface Waters--Lake Tahoe Indian Creek Reservoir written by Percy Harold McGauhey and published by . This book was released on 1971 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: The water impounded at Indian Creek Reservoir near Lake Tahoe, California is approximately one-third surface runoff and direct precipitation and two-thirds reclaimed water exported from South Tahoe Public Utility District Plant. Discussed are the results of tests which determined the temporal changes and relationships between water quality characteristics of Indian Creek Reservoir and those of the reclaimed water. Initially the reservoir would not support fish life, but as the reservoir matured, ammonia levels declined to less than 4 mg/l and by 1970 it was an excellent trout fishery. Approximately 70% of the ammonia nitrogen was lost to the atmosphere by nitrification-denitrification. Good biological productivity indicated access to other phosphorus sources, probably runoff. Relative to conductivity and chemical components the water is of good irrigation quality. Various parameters showed that the reservoir responds to more complex factors than those measurable in the reclaimed waste water, raising the question of the effectiveness of tertiary treatment for recreational impoundments.
Author: United States Environmental Protection Agency (EPA)
Publisher: Createspace Independent Publishing Platform
Published: 2018-07-10
Total Pages: 160
ISBN-13: 9781722437480
DOWNLOAD EBOOKEutrophication of Surface Waters - Lake Tahoe
Download or read book Eutrophication of Surface Waters - Lake Tahoe written by United States Environmental Protection Agency (EPA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-10 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eutrophication of Surface Waters - Lake Tahoe
Author: United States. Enviornmental Protection Agency
Publisher:
Published: 1971
Total Pages: 132
ISBN-13:
DOWNLOAD EBOOKDownload or read book Water Pollution Control Research Series 16010 DNY 07/71. Etrophication of Surface Waters-Lake Tahoe Indian Creek Reservoir written by United States. Enviornmental Protection Agency and published by . This book was released on 1971 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Field and Laboratory Methods for Measuring the Quality of Surface Waters and Effluents written by Cornelius I. Weber and published by . This book was released on 1980 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author: United States. Environmental Protection Agency
Publisher:
Published: 1973
Total Pages: 968
ISBN-13:
DOWNLOAD EBOOKDownload or read book EPA Reports Bibliography written by United States. Environmental Protection Agency and published by . This book was released on 1973 with total page 968 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author: United States. Environmental Protection Agency. Office of Research and Development
Publisher:
Published: 1976
Total Pages: 264
ISBN-13:
DOWNLOAD EBOOKDownload or read book ORD Publications Summary written by United States. Environmental Protection Agency. Office of Research and Development and published by . This book was released on 1976 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
