This session focuses on the quality assurance programs conducted at the USGS Hydrologic Instrumentation Facility. This overview will include the ADCPs, Flowtrackers, mechanical meters, and groundwater tapes, as well as other water quality and quantity monitoring instruments. The new testing procedures used at the HIF will be presented, including the criteria used to evaluate the instruments. The results provided for each unit will be explained to facilitate understanding and application. Quality Assurance program results from recent years will also be presented.