The Water Use Data Management Function provides support for water-use data acquisition, review, management, and storage for Water Enterprise water-use data needs. This support includes developing or contributing to water use related policies, technical memos, training, and data review tools. This presentation will give an overview of the Water Use Data Management Function activities; provide an overview of water-use data available to USGS studies and how to access these data; and highlight several national and local water use projects.