low water line—The line defined by the boundary of a body of water at its ordinary low water stage or normal lower water.

low water mark–  See low water line.

lower high water (LHW)- The lower of two high waters of any tidal day where the tide exhibits mixed characteristics.

lower low water line– A line or mark indicating lower low water.

lowest low water– A plane of reference whose distance below mean sea level corresponds with the meal level of lowest low water of any normal tide; lowest normal low water.

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Source: NSPS “Definitions of Surveying and Related Terms“, used with permission.

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