Current Gallatin Streamflow: 613 cfsVIEW MORE

Algae growing on the Taylor Fork of Gallatin River.

Algae begin to grow in the spring when the days lengthen and the water warms and die in the fall. The Montana Department of Environmental Quality (MT DEQ) defines the algae growing season to occur between July 15th and September 30th. During the average year, algae grow and die within this window.

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