Legal Definitions - mean lower low tide

Mean lower low tide refers to the average of the lowest low tides over a fixed period of time. It is used to measure a shore's boundary and is an important factor in determining the depth of water for navigation and construction purposes.

• If the mean lower low tide of a beach is 2 feet, it means that during low tide, the water level will be at or below 2 feet on average.
• When planning to build a pier, engineers need to know the mean lower low tide to ensure that the pier is high enough above the water level to avoid damage during low tide.

These examples illustrate how mean lower low tide is an important measurement for coastal planning and construction. It helps ensure that structures are built at a safe height above the water level and that navigation routes are deep enough for boats to pass through.