Town of Riverhead topographic map

Average elevation: 11 m

Average elevation: 10 m

Average elevation: 4 m

Average elevation: 53 m

Average elevation: 40 m

Average elevation: 14 m

Average elevation: 5 m

Average elevation: 13 m

Average elevation: 1 m

Average elevation: 54 m

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Average elevation: 8 m

Average elevation: 28 m

Average elevation: 18 m

Long Island's highest point is Jayne's Hill in the neighboring hamlet of West Hills, with an elevation of 387 feet (118 m) to 400.9 feet (122.2 m) above sea level.

Average elevation: 53 m

Average elevation: 15 m

Average elevation: 4 m

Average elevation: 7 m

Average elevation: 6 m

Average elevation: 26 m

Average elevation: 17 m

Average elevation: 21 m

Quiogue is located at 40°49′11″N 072°37′44″W / 40.81972°N 72.62889°W / 40.81972; -72.62889 (40.8198217, -72.6289837) and its elevation is 23 feet (7 m).

Average elevation: 5 m

Average elevation: 10 m

Average elevation: 35 m

Average elevation: 16 m

Average elevation: 13 m

Average elevation: 19 m

Average elevation: 13 m

Average elevation: 2 m

Average elevation: 25 m

Average elevation: 4 m

Average elevation: 7 m

Average elevation: 10 m

Average elevation: 13 m

Average elevation: 0 m

Average elevation: 29 m

Average elevation: 8 m

Average elevation: 26 m

Average elevation: 14 m

Average elevation: 39 m

Average elevation: 3 m

In 1836 the local leadership initiated the community's transition from a "swampish hamlet" to a busy port town. The 22 acres of the harborfront, which flooded at high tide, were brought to a stable elevation with the construction of a causeway. The village changed its name from "Drowned Meadow" to "Port…

Average elevation: 33 m

Average elevation: 51 m

Average elevation: 35 m

Average elevation: 10 m

Average elevation: 13 m

Average elevation: 12 m

Average elevation: 7 m

Average elevation: 0 m