Much interest and demand has arisen for a compilation of current research for the area of pesticides and pest control in aquatic environments. Toward this end, the Office of Water Programs of the Environmental Protection Agency contracted with the Smithsonian Science Information Exchange to assemble and prepare a compilation of appropriate pesticides and pest control studies. Special consideration was given to providing a selection of research projects and a subject index which would encompass this broad subject area in a useful form. A total of 884 projects which were active during the FY 1970 and FY 1971 period are included. On the average, 14 subject entries have been included for each project. Along with the summaries of the projects, the catalog contains the following indexes: Subject Index, Investigator Index, Contracting Agency Index, and Supporting Agency Index. The information which appears in the summaries and the indexes was taken directly from the project record as received by the Smithsonian Science Information Exchange.