At 367 acres, Long Lake is a mid-sized Michigan inland lake. With a maximum depth of 58 feet and an average depth of nearly 13 feet, the lake is deeper than many nearby inland lakes but not among the deepest in the state. 

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Long Lake has a 3.6-mile shoreline and shoreline development factor of 1.4. Shoreline development factor is a measure of the irregularity of the shoreline. A lake with a perfectly round shape would have a shoreline development factor of 1.0. With a shoreline development factor of 1.4, Long Lake exhibits a pleasantly varied shoreline with being overly irregular. This creates plenty of beneficial, nearshore wildlife habitat and limits the amount of development around the lake. Avoiding excessive hardening of the shoreline helps maintain these ecological benefits.

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Long Lake is also shaped by the land around it. Its watershed is about seven times larger than the lake itself, which is fairly typical for a lake of this size. This means activities throughout the entire watershed, not just along the water’s edge, can influence water clarity, nutrient levels, and overall lake health.