Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Index to Evaluate Lake Restoration.
Author Porcella, Donald B. ; Peterson, Spencer A. ; Larsen, David P. ;
CORP Author Corvallis Environmental Research Lab., OR.
Year Published 1980
Report Number EPA-600/J-80-402;
Stock Number PB83-151761
Additional Subjects Renovating ; Lakes ; Water pollution ; Evaluation ; Limnology ; Phosphorus ; Nitrogen ; Chlorophylls ; Transparence ; Oxygen ; Dissolved gases ; Aquatic plants ; Mathematical prediction ; Reprints ;
Library Call Number Additional Info Location Last
NTIS  PB83-151761 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 21p
A lake evaluation index (LEI) is proposed to express the overall quality of lake water based on a mathematical combination of the commonly measured limnological variables total phosphorus, total nitrogen, chlorophyll, Secchi depth, dissolved oxygen, and macrophyte coverage. Values used in the LEI are averages for the July-August period. Macrophyte coverage is expressed as the percent of the area which could potentially be occupied actually. The LEI was developed to express the overall change in water quality that might occur when lakes are restored and to evaluate the effectiveness of various treatment methods for a wide variety of lakes.