Accession Number : ADA180443

Title :   Environmental and Water Quality Operational Studies: Sampling Design for Reservoir Water Quality Investigations.

Descriptive Note : Final rept.,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB

Personal Author(s) : Gaugush,Robert F.

Report Date : MAR 1987

Pagination or Media Count : 90

Abstract : This report introduces the statistical concepts involved in the development of sampling designs for reservoir water quality investigations. It provides a general overview of statistical inference and the assumptions involved in sampling. A discussion of basic statistics is included to familiarize the reader with the necessary statistical background for the materials to follow. The presentation of the methods of sampling design is made with specific reference to reservoir water quality sampling and covers the determination of sample size, simple random sampling, stratified random sampling, and systematic sampling. The report also presents the use of decision matrices, tools to aid in the decisionmaking process involved in determining the number of samples, the parameters to be measured, and the frequency of sampling within funding constraints. Reservoir water quality patterns and their implications for sampling design are discussed with an emphasis on the influence of parameter frequency distributions, spatial patterns, and temporal patterns on sampling design. Keywords: Reservoir; Sampling; Sample design; Statistics; Water Quality.

Descriptors :   *SAMPLING, *RESERVOIRS, *WATER QUALITY, BACKGROUND, DECISION MAKING, DISTRIBUTION, FREQUENCY, PATTERNS, SPATIAL DISTRIBUTION, STATISTICAL INFERENCE, STATISTICS, STRATIFICATION

Subject Categories : Water Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE