Record Display for the EPA National Library Catalog


Main Title Eutrophication of surface waters : Lake Tahoe's Indian Creek Reservoir /
Author McGauhey, P. H. ; Porcella, D. B. ; Dugan., G. L.
Other Authors
Author Title of a Work
Porcella, D. B.,
Dugan, G. L.,
McGauhey, P. H.
Porcella, Donald B.
CORP Author Lake Tahoe Area Council.
Publisher U.S. Environmental Protection Agency, Eutrophication and Lake Restoration Branch, Pacific Northwest Environmental Research Laboratoy, National Environmental Research Center,
Year Published 1975
Report Number EPA-660/3-75-003; EPA-16010-DNY; EPA-16010-DSW
Stock Number PB-240 725
OCLC Number 01240459
Subjects Eutrophication--California ; Water quality--California ; Water--Purification ; Eutrophication--California--Indian Creek Reservoir ; Water quality--California--Indian Creek Reservoir ; Indian Creek Reservoir (Calif)
Additional Subjects Water pollution ; Indian Creek Reservoir ; Primary biological productivity ; Nitrification ; Bioassay ; Inorganic phosphates ; Ammonium compounds ; Inorganic nitrates ; Aquatic plants ; Fishes ; Algae ; Nutrients ; Water reclamation ; California ; Eutrophication ; Reclaimed water ; South Tahoe Public Utility District ; Water pollution effects(Animals) ; Water pollution effects(Plants)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 660-3-75-003 Headquarters Library/Washington,DC 12/24/2014
ELBD ARCHIVE EPA 660-3-75-003 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ERAD  EPA 660/3-75-003 Region 9 Library/San Francisco,CA 03/18/2013
NTIS  PB-240 725 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation ix, 188 pages : illustrations, figures, tables ; 28 cm
From April 1969 to October 1974 field and laboratory analyses and observations were made at approximately weekly intervals to evaluate the relationship between the quality of water impounded at Indian Creek Reservoir (ICR) and the reclaimed water exported by the South Tahoe Public Utility District. The reclaimed water comprised from 70 to 80% of the annual impoundment. On the average the reclaimed water contained 0.1 to 0.2 mg/l of phosphorus and 15-24 mg/l of ammonia, the latter making it toxic to fish implanted in ICR. However, as the reservoir matured, nitrification-denitrification removed most of the nitrogen from the system and by March 1970 the reservoir had become an excellent trout fishery. Excess N in comparison with P evidently precluded blooms of blue green algae but low phosphorus did not prevent the impoundment from becoming typical of a highly productive environment, with vascular plants invading to considerable depths because of the high degree of clarity of the reclaimed water. It is concluded that the reservoir responds to more complex factors than are measurable by analysis of reclaimed water.
Includes bibliographical references (pages 115-118).