The Pool Preserve offers old-growth hemlocks, rolling falls, and some of the best trout fishing in the Georges River. 

One of the locks in the historic Georges River Canal was located here; its remnants can be seen from the Pool, reaching deep into the ground. You can also see the ruins of a sawmill.

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The preserve is generally flat with one longer slope towards the water. Be mindful of the mill's ruins.

From Route 17 in Union, travel one mile north on Sennebec Road to a dirt road on the left (see map). Drive down the dirt road to its end and park beyond the entrance to the driveway into the small gravel pit. At times, the dirt road is chained, so please park on the shoulder there and walk down the dirt road to the property.