A view of a boat in the distance on the Mississippi River on a sunny day. Either side of the river is bordered with green trees and there are a few scattered clouds in the sky.

Register Now: Internet of Water Coalition Webinar Series

From agricultural conservation practices, to green infrastructure, to nitrate loading trends, there’s a wealth of information at your fingertips when you visit GLTG. Join us…
Two maps of the 12 states along the Mississippi River showing locations of streamflow and water quality monitoring sites used in preliminary matching for nutrient trends analysis.

GLTG Presents at the SWCS Conference 2023

Dr. Ellen Gilinsky, NGRREC Senior Water Policy and Science Advisor, gave a talk on GLTG Trends Work at the Soil and Water Conservation Society (SWCS)…
Image of the Rock River with a treeline in the background reflecting off of the river.

Your Peek into State Water Quality Data Portals: First Up…Illinois

We get it. The state data portals can feel a little daunting for the first-time user. So, in the next few posts we’re going to…
Sunny blue sky with scattered white clouds over a field of new corn.

Agricultural Conservation Practices Mapped on GLTG

Reducing losses of nitrogen and phosphorus on land in agricultural production requires the strategic location of conservation practices throughout the landscape. The USDA oversees more…

What Are Layers and Why Do They Matter?

Supported by the supercomputing capacity at the National Center for Supercomputing Applications (NCSA), Great Lakes To Gulf (GLTG) includes features beyond the interactive map of…

Tracking Nitrogen and Phosphorus in the Mississippi-Atchafalaya River Basin

Nutrient management in the Mississippi-Atchafalaya River Basin (MARB) is a complicated undertaking. Excess nitrogen and phosphorus from various point and non-point sources contributes to the…

Getting to Know GLTG

The Great Lakes to Gulf Virtual Observatory (GLTG) is an interactive GIS-based tool that integrates water quality data with land use and conservation practices information.…