The material contained in this report consists of raw field data acquired on miscellaneous reservoir field investigations performed in July 1964. The following studies are included: Lookout Point Reservoir; Dexter Reservoir; Cougar Reservoir; Hills Creek Reservoir (above); Hills Creek Reservoir; Snake River (Hells Canyon). The data are arranged by survey (in above order), with the station data arranged with the downstream station first, and the remaining stations in upstream sequence. With the exception of the plankton counts, all results were obtained in the field. Chemical analysis (alkalinity, phosphate, nitrate, and hardness) were measured.