Lack of academic document storage or academic electronic-based data in Mulawarman University is the basis of this research. As a Republic Indonesia Regulation in No. 82/2012 on Electronic System and Transaction Act. 3. Therefore, Mulawarman University is required to provide electronic document or electronic-based data storage thus easy for those who need it. In this study, Unified Software Development Process (USDP) methodology as a modeling system has been implemented. Meanwhile, PHP and MySQL as a system development tool have been explored. A document storage system or website-based data called a repository information system has been created as a result of this research. Furthermore, this repository has ten types documents that can be stored and retrieved, consisting of journals, books, proceedings, articles, university regulatory, guidance, reports, course materials, letters, and other academic data for Mulawarman University.