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  2. Aerial survey - Wikipedia

    en.wikipedia.org/wiki/Aerial_survey

    Aerial survey is a method of collecting geomatics or other imagery data using airplanes, helicopters, UAVs, balloons, or other aerial methods. Typical data collected includes aerial photography , Lidar , remote sensing (using various visible and invisible bands of the electromagnetic spectrum , such as infrared , gamma , or ultraviolet ) and ...

  3. Sudbury, Massachusetts - Wikipedia

    en.wikipedia.org/wiki/Sudbury,_Massachusetts

    1871 Atlas of Massachusetts. by Wall & Gray.Map of Massachusetts. Map of Middlesex County. History of Middlesex County, Massachusetts, Volume 1 (A–H), Volume 2 (L–W) compiled by Samuel Adams Drake, published 1879 and 1880. 572 and 505 pages. Sudbury article by Rev. George A. Oviatt in volume 2 pages 357–381.

  4. Cochituate Aqueduct - Wikipedia

    en.wikipedia.org/wiki/Cochituate_Aqueduct

    The Cochituate Aqueduct begins at a gatehouse on the east side of Lake Cochituate, north of Massachusetts Route 30. It passes roughly eastward, eventually running along the town line between Wayland and Natick. It eventually turns southeasterly, skirting around the east side of Morses Pond in Wellesley shortly after passing under Massachusetts ...

  5. Photometric system - Wikipedia

    en.wikipedia.org/wiki/Photometric_system

    The sensitivity usually depends on the optical system, detectors and filters used. For each photometric system a set of primary standard stars is provided. A commonly adopted standardized photometric system is the Johnson-Morgan or UBV photometric system (1953). At present, there are more than 200 photometric systems. [citation needed]

  6. Sudbury Aqueduct - Wikipedia

    en.wikipedia.org/wiki/Sudbury_Aqueduct

    The Sudbury Aqueduct was constructed between 1875 and 1878, and was in use for almost 100 years. It was designed to carry water from the watershed of the Sudbury River to Boston and its surrounding communities.

  7. Sudbury Center Historic District - Wikipedia

    en.wikipedia.org/wiki/Sudbury_Center_Historic...

    The Sudbury Center Historic District is a historic district on Concord and Old Sudbury Roads in Sudbury, Massachusetts. It was listed on the National Register of Historic Places in 1976. [ 1 ] [ failed verification ] In 1976, it included 80 buildings over 193.6 acres (0.783 km 2 ).

  8. Sudbury River - Wikipedia

    en.wikipedia.org/wiki/Sudbury_River

    The Sudbury River is a 32.7-mile-long (52.6 km) tributary of the Concord River in Middlesex County, Massachusetts, in the United States. [1]Originating in the Cedar Swamp in Westborough, Massachusetts, near the boundary with Hopkinton, the Sudbury River meanders generally northeast, through Fairhaven Bay, and to its confluence with the Assabet River at Egg Rock in Concord, Massachusetts, to ...

  9. Ashland Dam and Spillway - Wikipedia

    en.wikipedia.org/wiki/Ashland_Dam_and_Spillway

    The dam and spillway were built in Ashland, a rural outer suburb west of Boston, in 1885 as one of the later elements of Boston's second major water supply system. This system impounded large sections of the Sudbury River, primarily in Framingham, from where the water was piped toward Boston via the Sudbury Aqueduct. Water impounded by the ...