Record Display for the EPA National Library Catalog


Main Title Chemistry of Wilderness Lakes in the Western United States.
Author Eilers, J. M. ; Brakke, D. F. ; Landers, D. H. ; Overton, W. S. ;
CORP Author Northrop Services, Inc., Corvallis, OR. ;Western Washington Univ., Bellingham. ;Oregon State Univ., Corvallis.;Corvallis Environmental Research Lab., OR.
Year Published 1987
Report Number EPA-68-03-3246; EPA/600/D-87/338;
Stock Number PB88-132105
Additional Subjects Lakes ; Chemical analysis ; Water quality ; Sampling ; Environmental surveys ; Hydrology ; Acidification ; Water chemistry ; Western United States ; Environmental monitoring
Library Call Number Additional Info Location Last
NTIS  PB88-132105 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 28p
A synopic survey of 719 lakes representing over 10,000 lakes in mountainous areas of the western U.S. was conducted in autumn 1985. Nearly two-thirds of the study lakes were located in wilderness areas or national parks. The lake selection process employed a stratified design with equal allocation of samples among strata, thus allowing chemical characteristics of lake subpopulations within the five subregions of the West to be estimated with known precision. The results of a comparability study of 45 wilderness lakes accessed by helicopter and ground crews indicated that the data were generally indistinguishable, making it possible to use data from lakes sampled by ground crews without modification. Wilderness lakes had lower acid neutralizing capacity (ANC), base cations, sulfate, and dissolved organic carbon than nonwilderness lakes throughout the West. The highest estimated number and percentages of low ANC wilderness lakes were located in California; the lowest number was located in the Southern Rockies.