HydroFlame: New online tool to prevent the disastrous aftermath of wildfires

A picture of the 2020 Calwood Fire (Image source: Malachi Brooks via Unsplash)

NASA is supporting the development of an online tool called HydroFlame. The tool is designed to help predict mudslides, flash flooding, and contaminated water supplies — possible effects of wildfires.

When a community is hit with wildfires, the protective blanket that plants provide to the landscape is lost. There are no plants to absorb rain. As a result, ash and debris from charred hillsides flow into water bodies.

That runoff can contaminate the water supply in the area. It can also lead to flash flooding. These are resulting disasters that HydroFlame could prevent. The tool uses satellite data to provide a picture of what is happening on burned land and nearby watersheds.

With this information and with stream records from gauged rivers, hydrologic models are created. These models show possible resulting effects of the fire on water flow and quality. In areas where there are no gauges, machine learning fills in the data.

All of these ultimately provide a forecast, pointing out areas that are at risk of flash floods and water contamination. The tool has three components: a historical viewer, a “what-if” scenario builder, and a predictive tool that generates weekly forecasts. The “what-if” scenario builder and the predictive tool are still being developed.

HydroFlame passed a test recently. It correctly predicted mudflow events that followed the January 2025 wildfires in Los Angeles. The team, however, had not put on-ground sensors in place at the time. This means the results from the trial were not data-verified. Nevertheless, the trial is a practical validation for HydroFlame.

Currently, the tool only includes data for Montana’s Clark Fork Basin. But there are ongoing plans to expand to California and Utah.

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