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.
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Other Authors |
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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
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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
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Internet Access |
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Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
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. |
Abstract |
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. |
Notes |
Final. Shipping list no.: 89-697-P. "April 1989"--Cover. Includes bibliographical references (pages 201-207). "EPA-905/6/89-001." |