The WISE (Water Information System for the Environment) Portal is an open-source web platform designed for the visualization, analysis, and dissemination of global hydrological model outputs. Built on the CoSWAT (Community SWAT+) modeling framework, the portal provides researchers, policymakers, and stakeholders with interactive tools to explore water resource data at multiple spatial scales. The platform integrates high-resolution geospatial datasets with modern web mapping technologies, enabling users to view static and time-varying hydrological variables such as evapotranspiration, precipitation, surface runoff, snowmelt, and soil moisture. Data is served through an OGC-compliant GeoServer instance and rendered in the browser using Leaflet-based interactive maps. Key capabilities of the portal include multi-scale navigation across global, continental, and country-level workspaces; time series playback with precached raster frames for smooth animation; side-by-side split map comparison of different variables or regions; per-pixel time series extraction with streaming progressive charts; zonal statistics with polygon drawing tools and box plot visualizations; and a collapsible tools panel for advanced analysis workflows. The WISE Portal is developed collaboratively by Texas A&M University, Texas A&M AgriLife Research, Texas Tech University, and the Rural Development Administration (RDA) of the Republic of Korea. The project aims to make global-scale water resource modeling outputs accessible and actionable for decision-making in agriculture, water management, and climate adaptation. All source code and model outputs are released under the MIT License. Contributions, feedback, and collaboration inquiries are welcome through the project repository.