The objective of this environmental studies unit is to establish a water quality monitoring project for high school students in Alberta while simultaneously providing a unit which meets the objectives of the Biology 20 program (and which may also be used in Biology 10 and 30). Through this project, students assist in the collection, identification, and tabulation of the invertebrate fauna of selected Alberta rivers. The project not only develops an awareness and critical understanding of the environment and current social problems (such as pollution), while contributing to the development of vocational knowledge and skills, but also represents an additional attempt by Alberta Environment to accumulate scientifically reliable information to determine areas of concern and whether remedial action is necessary. This student manual includes information on: (1) field materials and methods (including collecting techniques); (2) laboratory methods, materials, and data analysis techniques; and (3) writing a laboratory report. (JN)