The Great Lakes to Gulf Virtual Observatory (GLTG) is an interactive, geospatial application that provides user-friendly access to water quality information from the Mississippi River and its tributaries. GLTG helps people visualize and better understand nutrient pollution and its historical evolution. From agricultural conservation practices to green infrastructure, to Nitrate Loading trends, there’s a wealth of information at your fingertips. We’ll walk you through the different layers and data available and then dive into lessons learned from our work on nutrient trends analysis in the Mississippi River Basin.