Record Display for the EPA National Library Catalog

RECORD NUMBER: 36 OF 42

OLS Field Name OLS Field Data
Main Title Statistical Basis for the Design and Interpretation of the National Surface Water Survey. Phase 1. Lakes and Streams.
Author Blick, D. J. ; Messer, J. J. ; Landers, D. H. ; Overton, W. S. ;
CORP Author Corvallis Environmental Research Lab., OR. ;Oregon State Univ., Corvallis. Dept. of Statistics.
Year Published 1987
Report Number EPA/600/D-88/160;
Stock Number PB88-237938
Additional Subjects Water pollution ; Surface waters ; Environmental surveys ; Acid deposition ; Lakes ; Streams ; Statistical samples ; Reprints ; National Surface Water Survey
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB88-237938 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 12/29/1988
Collation 9p
Abstract
The primary objectives of Phase I of the National Surface Water Survey were to determine the number of acidic or potentially acidic lakes and streams, their location, and their physical and chemical characteristics. To meet these objectives, a statistically designed survey was implemented. For both lakes and streams, probability samples were drawn in order to make population estimates within known confidence bounds. The National Lake Survey utilized a stratified design in which the population consisted of lakes identified on 1:250,000 maps in regions of interest. Strata were defined on the basis of region, subregion, and mapped alkalinity classes. A systematic random sample was taken within each stratum. The National Stream Survey was also stratified by region and subregion, but a two-stage sampling scheme utilizing a point frame was employed within strata.