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  2. Sudbury Aqueduct - Wikipedia

    en.wikipedia.org/wiki/Sudbury_Aqueduct

    [4] [5] Clean water was directed through alternate pipelines to bypass the break, but to provide all the water needed, the Massachusetts Water Resources Authority supplemented the water supply by tapping the Chestnut Hill Reservoir; water from the Sudbury Reservoir and Foss Reservoir was sent through the Sudbury Aqueduct to Chestnut Hill to ...

  3. 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 ...

  4. 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]

  5. 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.

  6. VisionMap A3 Digital Mapping System - Wikipedia

    en.wikipedia.org/wiki/VisionMap_A3_Digital...

    1. Accurately solved vertical and oblique single images of the area of interest. The solution for each image is the result of the photogrammetric bundle block adjustment with self-calibration. 2. SLFs (Super Large Frames), used for stereo photogrammetric mapping. 3. DSM (Digital Surface Model) 4. DTM (Digital Terrain Model) 5.

  7. Photogrammetry - Wikipedia

    en.wikipedia.org/wiki/Photogrammetry

    Low altitude aerial photograph for use in photogrammetry. Location: Three Arch Bay, Laguna Beach, California. Photogrammetry is the science and technology of obtaining reliable information about physical objects and the environment through the process of recording, measuring and interpreting photographic images and patterns of electromagnetic radiant imagery and other phenomena.

  8. Nobscot Hill - Wikipedia

    en.wikipedia.org/wiki/Nobscot_Hill

    Nobscot Hill is a USGS name [1] for a high point in Middlesex County, Massachusetts with many public hiking trails, and the hill is located in Framingham and Sudbury.At the summit are various radio towers and a fire tower.

  9. Cochituate Aqueduct - Wikipedia

    en.wikipedia.org/wiki/Cochituate_Aqueduct

    The artificial lake, with 17 square miles (44 square kilometres) of watershed, 2 billion US gallons (7,600,000 m 3) of storage, and yield of 10 million US gallons (38,000 m 3) of water per day, became the cornerstone of Boston's public water system.