Record Display for the EPA National Library Catalog


Main Title Water quality in the middle Great Lakes : results of the 1985 USEPA survey of Lakes Erie, Huron, and Michigan /
Author Rockwell, David C. ; Salisbury, D. K. ; Lesht, B. M.
Other Authors
Author Title of a Work
Salisbury, Douglas K.
Lesht, Barry M.
CORP Author Computer Sciences Corp., Chicago, IL. Applied Technology Div. ;Argonne National Lab., IL. Biological, Environmental, and Medical Research Div.;Environmental Protection Agency, Chicago, IL. Great Lakes National Program Office.
Publisher U.S. Environmental Protection Agency, Great Lakes National Program Office ; National Technical Information Service [distributor],
Year Published 1989
Report Number EPA-905/6/89-001; GLNPO-4
Stock Number PB90-145822
OCLC Number 20733904
Subjects Water quality--Great Lakes (North America)--Statistics ; Water quality--Lake Erie
Additional Subjects Phosphorus ; Water pollution ; Great Lakes ; Surveys ; Water quality ; Limnology ; Concentration(Composition) ; Inorganic nitrates ; Magnitude ; Lake Erie ; Lake Huron ; Lake Michigan ; Silicon dioxide ; Nitrogen ; Mathematical models ; Temperature ; Hypolimnion ; Eutrophication ; Organic loading
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 905-6-89-001 Headquarters Library/Washington,DC 10/27/2009
ELAD  EPA 905-6-89-001 Region 5 Library/Chicago,IL 11/16/2009
ELBD ARCHIVE EPA 905-6-89-001 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ELBD RPS EPA 905-6-89-001 repository copy AWBERC Library/Cincinnati,OH 01/24/2017
NTIS  PB90-145822 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xix, 207, 42, 1 pages : illustrations ; 28 cm.
Continuing a limited annual program begun in 1983, the Great Lakes National Program Office surveyed the water quality of Lakes Erie, Huron and Michigan in 1985. A helicopter survey was completed during January and February, and three ship surveys were conducted in spring, summer, and fall. The samples were analyzed for traditional limnological parameters and nutrients. Although many measurements of water quality were unchanged from 1983 to 1985, the physical conditions, notably temperature, were much different; 1983 was a mild year, while 1984 and 1985 were much colder. In 1985 the stratification for each lake spanned a longer period than in 1983 and 1984. All lakes exhibited a pattern of nutrient depletion from the epilimnion and concurrent enrichment of the hypolimnion during the summer. The magnitude of the depletion for some parameters was greater in 1985 than observed in 1983 and 1984.
Final. Shipping list no.: 89-697-P. "April 1989"--Cover. Includes bibliographical references (pages 201-207). "EPA-905/6/89-001."