||Statistical Basis for the Design and Interpretation of the National Surface Water Survey. Phase 1. Lakes and Streams.
Blick, D. J. ;
Messer, J. J. ;
Landers, D. H. ;
Overton, W. S. ;
||Corvallis Environmental Research Lab., OR. ;Oregon State Univ., Corvallis. Dept. of Statistics.
Water pollution ;
Surface waters ;
Environmental surveys ;
Acid deposition ;
Statistical samples ;
National Surface Water Survey
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||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.
||Pub. in Lake and Reservoir Management, v3 p470-475 1987. Prepared in cooperation with Oregon State Univ., Corvallis. Dept. of Statistics.
||Reprint: Statistical Basis for the Design and Interpretation of the National Surface Water Survey. Phase 1. Lakes and Streams,
|PUB Date Free Form
||PC A02/MF A01