International Joint Commission (IJC)
More than a century of cooperation protecting shared waters

North American Water Watch


The "Real-Time Streamflow" Map tracks short-term changes (over several hours) in rivers and streams. The map depicts streamflow conditions as computed at USGS stream gages. The colours represent real-time streamflow compared to percentiles of historical daily streamflow for the day of the year. Special thanks to the United States Geological Survey for the platform used in.

**The data used to produce this map are provisional and have not been reviewed or edited. They may be subject to significant change.**