| Main Title |
An approach to a relative trophic index system for classifying lakes and reservoirs : a preliminary anaysis of National Eutrophication Survey Data collected during the 1972 sampling period. |
| CORP Author |
Pacific Northwest Environmental Research Lab., Corvallis, Oreg.;National Environmental Research Center, Las Vegas, Nev. |
| Publisher |
Pacific Northwest Environmental Research Laboratory, |
| Year Published |
1974 |
| Report Number |
EPA 910-R-74-107; EPA 645-R-74-001; Working Paper-24 |
| Stock Number |
PB-242 336 |
| OCLC Number |
13355690 |
| Subjects |
Eutrophication--United States ;
Lake ecology--United States
|
| Additional Subjects |
National Eutrophication Survey ;
Lakes ;
Reservoirs ;
Limnology ;
Water quality ;
Classifications ;
Surveys ;
Indexes(Documentation) ;
Tables(Data) ;
Trophic level ;
Oligotrophy ;
Mesotrophy ;
Eutrophy
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EJAM |
QH96.8.E9A652 |
|
Region 3 Library/Philadelphia, PA |
08/25/2006 |
DISPERSAL |
| EJBD |
EPA 645-R-74-001 |
|
Headquarters Library/Washington,DC |
12/09/2016 |
| ELBD ARCHIVE |
EPA 645-R-74-001 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ELBD RPS |
EPA 645-R-74-001 |
repository copy |
AWBERC Library/Cincinnati,OH |
10/27/2020 |
| ESAD |
EPA 910-R-74-107 |
|
Region 10 Library/Seattle,WA |
09/24/2012 |
| NTIS |
PB-242 336 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
44 pages ; 28 cm |
| Abstract |
A relative trophic state index for lake classification was developed using six key water quality parameters. The data base was approximately 200 lakes and reservoirs in northeast and north central United States which had been included in the National Eutrophication Survey during 1972-73. Each lake was given an index number and was also classified according to the conventional terminology of oligotrophic, mesotrophic, and eutrophic. The method can be used to classify a lake of unknown trophic condition if the proper parameters have been measured. |
| Notes |
"Working paper no. 24." "PB-242 336." Print reproduction. |
