The National Oceanic and Atmospheric Administration (NOAA) Arctic Environmental Response Management Application (ERMA) serves an important function for improving U.S. Coast Guard (USCG) Arctic domain awareness. However, increased activity in the Arctic (particularly the U.S. Arctic Extended Economic Zone, or EEZ) demonstrates the need for an all-hazards approach centered on a next-generation geospatial platform capable of displaying, informing, and disseminating data to users from various communities (e.g., the public, non-governmental, state, local, tribal, and federal). This project seeks to provide a web application that matches the state-of-the-art in commercial geovisualization. The project team will work with stakeholders to design, develop, and implement a web-based geospatial tool in an ArcGIS Online format. The research goal is to minimize redundancy by providing an accessible application that meets stakeholder needs. The project team will test presently available options (e.g., ERMA) for user experience, interface, and design. Through creating Alpha and Beta versions, and testing with project stakeholders, the research team will discover areas of needed improvement in coding, display, and usability. The project will result in an Arctic web GIS application and that is driven by HQ and operational level USCG mission needs and requirements. This project blends basic research into cartographic design with the applied research of implementing a webGIS application that uses state-of-the-art technologies and methods and will be compliant with the DHS S&T prototype Integrated Maritime Domain Enterprise (IMDE). The application will be built within the Geospatial Information Infrastructure (GII) under the Geospatial Management Office (GMO) and the Homeland Security Information Network (HSIN) infrastructure and that it will align with existing requirements within HSIN and the GMO. A HSIN Community of Interest will be overseen by the project champion.