Brig - A two-masted, square rigged vessel
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Forebay - In relation to a dam, the forebay is the lake itself
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Headworks - In relation to a dam, the top of the dam with gates where water flows
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Latitude - North / South Measurement: Angular distance north or south of the earth's equator, measured in degrees along a meridian, as on a map or globe. The equator is at 0 degrees. The North Pole is at +90 degrees or 90 degrees north. The South Pole is at –90 degrees or 90 degrees south.
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Longitude - East / West Measurement: Angular distance on the earth's surface, measured east or west from the prime meridian at Greenwich, England, to the meridian passing through a position, expressed in degrees (or hours), minutes, and seconds. Longitudes are measured from zero to 180° east and 180° west (or -180°), and both 180-degree longitudes share the same line, in the middle of the Pacific Ocean.
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Tailrace - In relation to a dam, the area below the dam where the water is expensed; Water levels measured at the bottom of a dam are considered tailwater readings
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