The phrase "average low water" is correct and usable in written English.
It is typically used in contexts related to maritime navigation, hydrology, or environmental studies to refer to the average level of water at low tide.
Example: "The chart indicates the average low water level for safe navigation in this area."
Alternatives: "mean low water" or "typical low water level".
-1 means the low tide will be one foot below the average low water mark.
A high tide indicated as an 8 tells you that at its highest, the water will be 8 feet above the average low water mark.
Because Chart Datum is an average, not the absolute lowest the tide could ever be, sometimes low tide will fall below the average low water mark.
In stable marshes with slow wetland loss rates, we found that marsh elevation averaged 1 cm above mean high water, 15 cm above mean water, and 32 cm above mean low water levels.
Along the coast of southern South Carolina, the storm tide was measured up to 11.9 feet above mean lower low water (the average level of the lowest low tide each day).
It surpassed even the most pessimistic forecasts, with the maximum water level reaching 13.88 feet above the average of the daily lowest low tide of the month, known as Mean Lower Low Water, including a storm surge component of 9.23 feet.
Well log analysis shows that the Farewell Formation is a promising reservoir with good effective porosity and low water saturation percentages, averaging at 17.7 and 24.9%, respectively.
The average soil moisture was 21.2 % in the low water treatments and 29.6 % in the high water treatments.
Local private landscape irrigation performance was found to be very poor, probably owing to low water cost and over-the-average household income.
When water availability was consistently high, accumulated nitrogen fertilizer use efficiency was relatively stable (50±3%, SWP treatments), and was much higher than that of low water availability treatments (25±21%, averaged across all NP treatments and years).
Low water mark for ordinary spring tides.
