Near its base, four to five feet above the present high-water level, it shows an erosion line.
In some regions the ground-water level may be nearly at the surface, and in others, especially where arid, it may be two thousand or more feet down.
It should be clearly recognized that oxidizing processes are not limited to the zone above the ground-water level.
The oxide zone of these deposits has no close relation to the present topography or to the present ground-water level.
The top surface of this zone is called the water table, or the ground-water level.
When it has risen to high-water level, it is soon covered with grasses, and becomes what is called schor in Zeeland, kwelder in Friesland.
Their home was in a near-by village and their holding was divided into four nearly rectangular paddies, graded to water level, separated by raised rims, and having an area of nearly two acres.
All of this work is done by hand and when the time for rice planting comes every ridge will again be thrown down and the surface smoothed to a water level.
By the general use of draught tubes with turbine wheels the floors of stations are often kept twenty feet or more above the tail-water level.
They are popularly known as the Tooth Shells, and although they generally live beyond low-water level, they may sometimes be seen alive on the beach, and the empty shells are often washed up by the waves.
The fry abound just below low-water level, and grow so rapidly that they reach their full size in a single year.
The animal lives mainly below low-water level, but it may often be found in the larger rock pools, creeping rapidly over the tangles, and may be easily secured with the aid of a net.
The last at high-water level is about 60, and at low-water level 70, square inches.
Where a pump is used, the supply should enter the boiler below low-water level through a non-return valve fitted with a tap, so that water can be prevented from blowing back through the pump.
But if the sluice is above the tail-water level, then the head is constant till the level of the sluice is reached, and afterwards it diminishes with the time.
By adjusting the height of the sluice, the requisite supply is given to the wheel in all positions of the head-water level.
With greater variation of head-water level, a pitch-back or high breast wheel is better.
The time of filling the lock through a sluice in the head gates is exactly the same, if the sluice is below the tail-water level.
Definition of "Ground-water Level" Water percolating through the soil passes downward by gravity until it reaches an impervious stratum.
The surface of this underground sheet of water is technically called "water table" or ground-water level.
The minimum difference in water level at which the switch will operate is approximately 10 to 12 inches.
When this type switch is used as a tank switch~, the contacts are closed when the water level is low, putting the motor, driving the pump, in motion.
When the float is placed in a closed tank, the minimum height inside from the bottom of the tank to the top should be at least 6 inches greater than the difference in water level to provide sufficient clearance for the float.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "water level" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
