NASA has developed the Satellite-based Tool for Rapid Evaluation of Aquatic Environments (STREAM) — an interactive web tool that enables high-resolution (20–30 meter) monitoring of water quality in inland lakes and coastal waters across the U.S. and selected other countries.
This two-part training led by NASA’s Applied Remote Sensing Training Program (ARSET) introduces the STREAM web tool to visualize maps of water quality parameters over lakes and coastal areas and how to use STREAM application programming interface (API) to discover and download satellite images and water quality data for a selected water body. The training demonstrates how to assess changes in water quality in each lake using QGIS. The training also demonstrates the application of an MDN model to estimate water quality parameters from satellite images.
There are two session dates on February 10 and February 17, 2026. Part 1 will include an introduction and demonstration of STREAM. Part 2 will include an introduction to a machine learning model to estimate water quality parameters based on satellite observations. For more information: https://www.earthdata.nasa.gov/learn/trainings/monitoring-water-quality-lakes-coastal-regions-using-stream?utm_source=announcement&utm_medium=email&utm_campaign=STREAM2026