Watersheds Canada found in a 2015 survey, "93% of properties on Grass Lake had submergent plants while 58% of properties had emergent vegetation which is an important source of habitat for fish, and other aquatic organisms.

Floating vegetation was found less frequently on Grass Lake but is still an important part of the aquatic ecosystem, giving habitat to birds, frogs, dragonflies, and other wildlife."

On the topic of wildlife habitats, the same survey found, "(The) most common types of nearshore habitat on Grass Lake were terrestrial logs (and) overhanging vegetation.

Most properties on Grass Lake had some amount of habitat present.

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