Monroe topographic map

Average elevation: 2,051 ft

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Because of their abrupt, hilly topography, pedestrian navigation in Upper Manhattan is facilitated by many step streets. The longest of these in Washington Heights, at approximately 130 stairs and with an elevation gain of approximately 65 feet, connects Fort Washington Avenue and Overlook Terrace at 187th…

Average elevation: 82 ft

New York's wilderness areas must be composed of 10,000 acres (4,000 ha; 40 km2) of contiguous land, twice the federal standard. Land is to be left as "untrammeled by man" and as close to its natural state as possible, offering outstanding opportunities for solitude. No artificially-powered devices are…

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Only a small creek (Irondequoit Creek) flows in what is left of this large paleogeologic valley. The area of the lower river was also affected. Since the earth rebounded from the melting glaciers more rapidly in Canada than in New York, water from Lake Ontario was spilled over New York due to its lower…

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Owasco Lake is 11.1 miles (17.9 km) long, with a maximum width of 1.3 miles (2.1 km). The lake reaches a maximum depth of 177 feet (54 m) and has a surface elevation of 712 feet (217 m) above sea level, controlled by a dam on the lake's outlet. The lake has a volume of 212 billion US gallons (800,000,000 m3),…

Average elevation: 1,001 ft

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Average elevation: 1,339 ft

The escarpment features rocks of the Upper Silurian and Upper and Middle Ordovician ages resting below the Devonian rocks. At the base of the escarpment, the Schenectady beds are visible. The Rondout "waterlime" or dolomite overlies the Schenectady beds and is most pronounced below Minelot Falls. The…

Average elevation: 860 ft

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The topography is a result of the massive glaciation of the last ice age, and as such the soil is extremely rocky and the surface shows glacial erratic boulders. The glacial ice scraped off and carried with it rocks and minerals from as far north as Canada, depositing them in Nanuet in particular and southern…

Average elevation: 341 ft

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The construction of the Erie Canal was a landmark civil engineering achievement in the early history of the United States. When built, the 363-mile (584 km) canal was the second-longest in the world (after the Grand Canal in China). Initially 40 feet (12 m) wide and 4 feet (1.2 m) deep, the canal was expanded…

Average elevation: 581 ft

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Average elevation: 75 ft

Marble Hill is one example of how Manhattan's land has been considerably altered by human intervention. The borough has seen substantial land reclamation along its waterfronts since Dutch colonial times, and much of the natural variation in its topography has been evened out.

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Average elevation: 866 ft

Chautauqua Lake, at an elevation of 1,308 feet (399 m) above sea level, is higher than any of the Finger Lakes. It is also one of the highest navigable lakes in North America. The lake's water level is regulated by Warner Dam, with the water level lifted during the summer to allow for recreational boat use and…

Average elevation: 1,519 ft

Average elevation: 554 ft

Average elevation: 92 ft

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Average elevation: 1,329 ft