Borewell Yield Measurement
A
common way to describe the yield of a new borewell is in ‘inches’
measured by the free, unrestrained flow of water from a borewell over a
90 degree ‘V’ notch. The basic principle is that the discharge is
directly related to the height of the water level from the bottom of
the V notch.
common way to describe the yield of a new borewell is in ‘inches’
measured by the free, unrestrained flow of water from a borewell over a
90 degree ‘V’ notch. The basic principle is that the discharge is
directly related to the height of the water level from the bottom of
the V notch.
h – Height of water level from the bottom of the V
Based on certain equations and formulae, the height ‘h’ in inches is converted to discharge rate in litres per hour.
The following table indicates the conversion of the yield in ‘inches’ to a discharge rate in litres per hour.
|
V-Notch Reading in Inches
|
Approximate Discharge Rate in l.p.h.
|
Class
|
|
1/4
|
95.4
|
|
|
3/4
|
261
|
Low Yield
|
|
1
|
597
|
|
|
1 1/4
|
1,045.00
|
|
|
1 1/2
|
1,650.00
|
Average Yield
|
|
1 3/4
|
2,425.00
|
|
|
2
|
3,382.00
|
|
|
2 1/4
|
4,558.80
|
High Yield
|
|
2 1/2
|
5,919.00
|
|
|
2 3/4
|
7,501.00
|
|
|
3
|
9,329.00
|
|
|
3 1/4
|
11,402.60
|
Very High Yield
|
|
3 1/2
|
13,720.00
|
|
|
3 3/4
|
16,284.60
|
|
|
4
|
19,148.00
|
|
|
4 1/4
|
22,285.60
|
|
|
4 1/2
|
28,695.20
|
|
|
4 3/4
|
29,459.20
|
|
|
5
|
33,350.00
|
|
|
5 1/4
|
37,914.00
|
|
|
5 1/2
|
42,551.00
|
|
|
5 3/4
|
47,461.00
|
Superlative Yield
|
|
6
|
52,644.00
|
|
|
6 1/4
|
58,372.00
|
|
|
6 1/2
|
64,373.00
|
|
|
6 3/4
|
70,919.00
|
|
|
7
|
77,464.00
|
|
|
7 1/4
|
84,557.00
|
|
|
7 1/2
|
92,195.00
|
|
|
7 3/4
|
1,00,105.00
|
|
|
8
|
1,08,288.00
|
|
Source:
http://www.lmnoeng.com/Weirs/vweir.php
Dear Sir/Madam,
Your site is giving very good information about water, It is very useful in our dailylife, Now a days due to lack of sufficient water so many people are facing many problems. In this circumstances Borewells in Hyderabad is doing some help to dig and get water. Some of the Borewells in Hyderabad.
Venkat
http://www.borewellshyderabad.blogspot.com
Borewells in Hyderabad
thanks for sharing nice blog of borewell
Great post.
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We all are appreciating your blog.
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Sir common people talks about that i am obtaining 2 or 3 inches of water what do you mean by that inches
Thanks a lot. Very useful information
It means sufficient water fo agriculture purpose.
Dear sir/madam,
Thanks so much for the elaborate explanation about the yield of a bore well and great lot thanks for the ready reckoner from 1/4th inch to 8inches. It has helped us a lot in designing of pumpset also.
Thanks again..
SRIDHAR KS,
Sub divisional Engineer-civil
BSNL,Bengaluru..
Thanks a lot very useful information & it's useful dailylife
Good information to all borewell users
Thanks a lot very useful information
This comment has been removed by the author.
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Borewell Contractors in Madurai
Good Service & useful informations.
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Dear sir, My bore is one week old. Fitted pump today and measured 1.25 inches. Will that stay the same henceforth or it would go up or down before settling. Please suggest. If I need to use today's measurement for crop planning purpose.
Tasagaon. District Sangli. Maharashtra
Really awesome blog. Your blog is really useful for me. Thanks for sharing this informative blog. Keep update your blog.
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Nice blog.Thanks for sharing…
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your blog is giving very good information and keep it up.
tks
Borewells in Hyderabad
Hi sir you are giving very good infomation to the public.
Borewells in Hyderabad
Nice info. but please inform how to find the yield in liters per day i.e. the quantity of water which can be withdrawn in a day and for how many days in an year.
Very useful information
Pls specify motor pump and HP measurement
Very good information for every one. I want to know the address of person/company find out underground water very accurately.
Thank you for your water measurement calculation
Ganesh Gowda water diviner Bangalore
ganeshganeshgowda86216@gmail.com
Contact +91 87629 67655
Very useful UFO and easy to understand
Respected sir .,
My question is 1 1/2inch of bore well water is equal to how much of gallonS
Very nice article ��
Sri Amman Borewells in Madurai
Thanks for sharing
Borewells in Madurai & Borewell Contractors in Madurai