Lake Gravity Falls

Lake Gravity Falls is a lake in Gravity Falls. It first appeared in "The Legend of the Gobblewonker." The lake appears to be surrounded by cliffs on three sides, with a beach on the side without a cliff. It is where a lot of the citizens of Gravity Falls go to do their fishing. Many of the local fishermen don't trust (or even like) Grunkle Stan. Lazy Susan, Manly Dan, his sons, and some other recurring characters fish there.

Overview
Lake Gravity Falls is a large body of freshwater near the town of Gravity Falls. It is often used for fishing, with nearly the whole town turning up on Fishing Season: Opening Day. It has at least one waterfall running into it, which houses a secret cave behind it. The cave seems to have been written about in Journal 3. A monster known as the Gobblewonker is said to live in the lake.

The lake also houses a small island that is known as Scuttlebutt Island, a mysterious and foreboding area where the Gobblewonker is known to frequent. The island is also home to a colony of beavers and terrifying creature disguising itself as another small island.

History
The lake is first seen in "The Legend of the Gobblewonker," when Fishing Season: Opening Day begins. It is there that Dipper and Mabel go looking for the Gobblewonker on Scuttlebutt Island, and Grunkle Stan goes fishing. After Dipper, Mabel, and Soos find the monster, it chases them through the lake, until they escape into the cave behind the lake's waterfall. After discovering that the Gobblewonker was, in fact a machine created by Old Man McGucket, Dipper, Mabel, and Soos have an evening of fishing with Stan. At the episode's end, a beast that appears to be the true Gobblewonker is shown swallowing one of Dipper's cameras while underwater, showing that the creature does actually exist, and makes its home in the lake, though the characters don't realize it.

Later, in "The Time Traveler's Pig," the lake was shown on Blendin Blandin's camouflage suit.

Later, in "The Deep End," Dipper and Mabel release Mermando into the lake so he can find his family.

In "Dreamscaperers," the lake is seen again at the beginning of the episode when the town of Gravity Falls is seen from above.

In "Gideon Rises," the lake is seen in the multiple overhead scenes of the town.

In "Tooth," Dipper and Mabel are paddling on the lake at night, looking for the monster, whose tooth they found.

It appears briefly during the intro to "Mabel's Guide to Colors." Mabel is building a sand sculpture of her name along the lake's sandy shores.