Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Watershed versus In-Lake Alkalinity Generation: A Comparison of Rates Using Input-Output Studies.
Author Shaffer, P. W. ; Hooper, R. P. ; Eshleman, K. N. ; Church, M. R. ;
CORP Author NSI Technology Services Corp., Corvallis, OR. ;Meta Systems, Inc., Cambridge, MA.;Corvallis Environmental Research Lab., OR.
Publisher c1988
Year Published 1988
Report Number EPA/600/J-88/402;
Stock Number PB90-100637
Additional Subjects Neutralizing ; Alkalinity ; Watersheds ; Lakes ; Water pollution ; Reviews ; Tables(Data) ; Reprints ; Acid deposition
Library Call Number Additional Info Location Last
NTIS  PB90-100637 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 03/10/1990
Collation 13p
As a means of assessing the relative contributions of watershed (terrestrial) and in-lake processes to overall lake/watershed alkalinity budgets, alkalinity production rates for watersheds and low alkalinity lakes were compiled from the literature and compared. Analysis of data indicates that for low alkalinity systems, areal alkalinity production rates for watersheds and lakes are approximately equal. The relationship suggests that watershed area to lake area ratio can be used as a convenient estimator of the relative importance of watershed and in-lake sources of alkalinity for drainage lake systems. For precipitation-dominated seepage lakes and other systems where hydrology limits soil-water contact, hydrologic flow paths and residence times can be of overriding importance in determining alkalinity sources. For regions dominated by drainage lakes with high watershed area to lake area ratios (such as the Northeastern U.S.), however, alkalinity budgets are dominated by watershed processes. Omission of in-lake alkalinity consideration for most lakes in such regions would have little impact on computed alkalinity budgets or on predicted response to changes in acidic deposition loadings. (Copyright (c) 1988 by Kluwer Academic Publishers.)