mean lower low water


Also found in: Acronyms.

mean lower low water

[′mēn ¦lō·ər ′lō ′wȯd·ər]
(oceanography)
The average height of the lower low waters at a place over a 19-year period.
References in periodicals archive ?
The authorized federal project includes a navigation channel 6ft deep below mean lower low water (MLLW) and 100ft wide extending approximately 6,000ft from the confluence of the East and Neck Rivers out into Guilford Harbour.
The channel is the main connection from the island to the mainland and is maintained to a depth of 8 feet mean lower low water day in the east channel and 7 feet mean lower low water in the turning basin and west channel.

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