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Lake Ronkonkoma is a hamlet and census-designated place (CDP) in Suffolk County, on Long Island, in New York, United States. The population was 18,619 at the time of the 2020 census. [2] Lake Ronkonkoma is mainly located in the Town of Brookhaven, but has small sections in the Town of Smithtown and the Town of Islip.
Cross section showing the water table varying with surface topography as well as a perched water table Cross-section of a hillslope depicting the vadose zone, capillary fringe, water table, and the phreatic or saturated zone. (Source: United States Geological Survey.) The water table is the upper surface of the zone of saturation.
The Long Island Rail Road, which was completed to nearby Lakeland in 1842 (the depot was moved to Ronkonkoma in 1883), helped transform what had been a sleepy farming hamlet. The lake was created by a retreating glacier. Portions of its irregular basin are unusually deep for Long Island, but most of the lake is less than 15 feet (4.6 m) deep.
The Manhasset–Lakeville Water District was founded in 1911, thus making it one of the oldest public water suppliers on all of Long Island. [1]In 1958, voters in the district voted against a controversial proposal to add fluoride to the district's water supply.
All of Long Island's water supply comes from underground water reserves held in aquifers. Stacked one on top of the other like layers in a cake, three major and one minor aquifer make up the Long Island aquifer system. In sequence from shallowest to the deepest, the Long Island aquifers are: the Upper Glacial, the Magothy and the Lloyd Aquifers.
The mill is a 2+1⁄2-story gambrel-roofed structure, adjacent to a stream-fed millpond supplemented by tidal water impounded by the dam. Dating to the 18th century, it is the only extant, operating tidal grist mill on Long Island. The building underwent restoration in the 1950s and is operated as a local history museum, overlooking Little Neck ...
The Central Pine Barrens overlays and recharges a portion of a federally designated sole source aquifer for Long Island's drinking water. All of Long Island's drinking water comes from ground water wells; none of the island's water comes from reservoirs. Almost all of the Peconic River and Carmans River (two of Long Island's four biggest rivers ...
This water was carried in a 12-mile-long masonry conduit, called the Ridgewood Aqueduct, [11] to a pumping station at Atlantic Avenue and Chestnut Street. There, steam-powered pumps, each with a capacity of 14 million gallons (53,000 m 3 ) per day, forced the water up through a reinforced tube into the high reservoir whence it was distributed.