Quality Control in a Volunteer Monitoring Program
Mayhew, Mary C.
Mayhew, Edmond A.
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The volunteer monitoring program on Lake Lanier was established in 1987 to provide baseline data on water quality. The program was designed with 100 stations for several reasons: to provide volunteers with the information about their area of the lake, to obtain baseline data about a large and diverse water body, and to provide quality control measures. The stations are sampled by volunteers once a year in late summer and, in many years, by professionals at three other times during the year. The laboratory techniques of weighing filters, measuring conductivity, analyzing for chlorophyll a and total phosphorus, and the field technique of measuring Secchi depth were compared for groups of volunteers, professionals, and volunteers and professionals. The results showed significant differences due to changes in equipment used, the method used, and seasonality, but no significant differences due to type of personnel.