The Hillview Reservoir is a storage

reservoir A reservoir (; from French ''réservoir'' ) is an enlarged lake behind a dam. Such a dam may be either artificial, built to store fresh water or it may be a natural formation. Reservoirs can be created in a number of ways, including contro ...

in southeastern

Yonkers, New York Yonkers () is a city in Westchester County, New York, United States. Developed along the Hudson River, it is the third most populous city in the state of New York, after New York City and Buffalo. The population of Yonkers was 211,569 as enu ...

. It was built within a six-year period from 1909–1915 by the New York City Board of Water Supply to receive water from the newly constructed

Catskill Aqueduct The Catskill Aqueduct, part of the New York City water supply system, brings water from the Catskill Mountains to Yonkers where it connects to other parts of the system. History Construction commenced in 1907. The aqueduct proper was completed i ...

, which drained water from the

Ashokan Reservoir The Ashokan Reservoir (; Iroquoian languages, Iroquois for "place of fish") is a reservoir (water), reservoir in Ulster County, New York. It is at the eastern end of the Catskill Park, and is one of several in the region created to New York City ...

and sent it down into the

Kensico Reservoir The Kensico Reservoir is a reservoir spanning the towns of Armonk ( North Castle) and Valhalla ( Mount Pleasant), New York, located 3 miles (5 km) north of White Plains. It was formed by the original earth and gravel Kensico Dam constructed in 18 ...

, where it would, in turn, be drained back into a continuation of the Catskill Aqueduct, and sent into the Hillview Reservoir. Frank E. Winsor was the engineer in charge of construction of both Hillview and Kensico as well as of the Catskill Aqueduct. The reservoir itself has a maximum capacity of 900 million US

gallons The gallon is a unit of volume in imperial units and United States customary units. Three different versions are in current use: *the imperial gallon (imp gal), defined as , which is or was used in the United Kingdom, Ireland, Canada, Austral ...

(3,400,000 m³), and water from the reservoir is sent through New York City Water Tunnels No. 1 and No. 2.

New York City Water Tunnel No. 3 New York City Water Tunnel No. 3 is a water-supply tunnel forming part of the New York City water supply system. It is being built by the New York City Department of Environmental Protection to provide New York City with a third connection to its ...

, which is still under construction, is planned to take water from the Kensico Reservoir, and immediately send it into the Hillview Reservoir, and then into the rest of

New York City New York, often called New York City or NYC, is the List of United States cities by population, most populous city in the United States. With a 2020 population of 8,804,190 distributed over , New York City is also the L ...

. The reservoir itself does not impound a river, and is held up by walls on all sides. In 1993, city officials considered building a

concrete Concrete is a composite material composed of fine and coarse aggregate bonded together with a fluid cement (cement paste) that hardens (cures) over time. Concrete is the second-most-used substance in the world after water, and is the most wi ...

cover over the reservoir to prevent

excrement Feces ( or faeces), known colloquially and in slang as poo and poop, are the solid or semi-solid remains of food that was not digested in the small intestine, and has been broken down by bacteria in the large intestine. Feces contain a relati ...

from

seagulls Gulls, or colloquially seagulls, are seabirds of the family Laridae in the suborder Lari. They are most closely related to the terns and skimmers and only distantly related to auks, and even more distantly to waders. Until the 21st century, ...

contaminating the water with

bacteria Bacteria (; singular: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were among ...

and

virus A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea. Since Dmitri Ivanovsky's 1 ...

es. In March 2019, the

New York City Department of Environmental Protection The New York City Department of Environmental Protection (DEP) is the department of the government of New York City that manages the city's water supply and works to reduce air, noise, and hazardous materials pollution. Under a 1.3 billion do ...

(DEP) made an agreement with the

United States Environmental Protection Agency The Environmental Protection Agency (EPA) is an independent executive agency of the United States federal government tasked with environmental protection matters. President Richard Nixon proposed the establishment of EPA on July 9, 1970; it be ...

(EPA) to cover the reservoir by 2049 to comply with the

Safe Drinking Water Act The Safe Drinking Water Act (SDWA) is the principal federal law in the United States intended to ensure safe drinking water for the public. Pursuant to the act, the Environmental Protection Agency (EPA) is required to set standards for drinking w ...

. They also agreed to enhance efforts to manage wildlife at the reservoir in the meantime, eliminating cliff swallow nests and capturing or killing

waterfowl Anseriformes is an order of birds also known as waterfowl that comprises about 180 living species of birds in three families: Anhimidae (three species of screamers), Anseranatidae (the magpie goose), and Anatidae, the largest family, which in ...

References

Sometime around1956, a seaplane attempted to land in the reservoir and either needed more runway length or didn't make the water and crashed on the Kimball ave slope {{authority control Water infrastructure of New York City Geography of Yonkers, New York Reservoirs in Westchester County, New York Protected areas of Westchester County, New York Reservoirs in New York (state) 1915 establishments in New York (state)

See also

References