The purpose of this guide is to assist authors in preparing reports for the Upper Mississippi River System Long Term Resource Monitoring Program (LTRMP). Four series of reports are produced for the LTRMP: Technical, Special, Program, and Reprints. Technical Reports have an EMTC staff member as the first author. Reports authored by contract or field station staff are published as LTRMP Special Reports. Programmatic reports (Annual Work Plan, Operating Plan), Annual Status Reports, Geospatial Applications, User's Manuals, and Procedures Manuals are designated as Program Reports. To provide LTRMP participants with easy access to documentation of LTRMP-related studies, reports previously published in other professional outlets are reprinted in the LTRMP Reprint series.