CLASSIFICATION OF WELLS
The wells may be classified as
OPEN WELLS or DUE WELLS
amount of ground water has been utilized from ancient times by open wells. They
are generally open masonry wells having compensatively higher diameters and are
suitable for low discharge (18m3/hr). The dia of open wells may be
2-9m and they are generally less than 20m in depth. The walls of an open well
may be built by brick or stone masonry or precast concrete rings.
The open wells may be classified
into the following 2 types
The nomenclature of shallow and deep
is purely technical and has nothing to do with the actual depth of the well. A
shallow well might be having more depth than the deep well.
YIELD OF AN OPEN WELL
yield of the well is used to indicate the rater of with drawl of water without
causing failure of well. It is the rate at which a well can supply the water.
The factors which influences the
yield of an open well are:
1. Well dimensions
2. Location of nearby wells
3. Porosity of aquifers
4. Quantity of water available in
5. Slope of water table
7. Rate of pumping water.