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Look out for harmful Algae Blooms while recreating this summer

When recreating on Montana’s waterbodies this spring, summer and fall, be on the lookout for harmful algal blooms (HABs) that can occur on Montana’s reservoirs and lakes. While not all algal blooms contain toxins, the blooms can impact human health and the health of freshwater ecosystems. Report suspected HABs at to help others be alert and prevent illness.

How to identify a HAB:

• A coloration or scum on the surface of the water that can look like grass clippings or spilled paint.

• Blooms are often blue, green or gold in color.

HABs can occur when there is a rapid overgrowth of bl...

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