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'File 19/252 Bahrain Water Supply' [‎15r] (31/96)

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The record is made up of 1 volume (45 folios). It was created in 29 May 1939-19 Nov 1942. It was written in English and Arabic. The original is part of the British Library: India Office The department of the British Government to which the Government of India reported between 1858 and 1947. The successor to the Court of Directors. Records and Private Papers Documents collected in a private capacity. .

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- 9 -
■ ells at the refinery proper are operated under conditions
that make observation difficult.
Wells at Malamlr, over the recent period since
September 1938, when regular observations were begun,
register no definite drop In head. Measurements show that
recent observations are within a tenth of a foot of the
highest observed in the two year period. The measurements
show 8 series of ups and downs, but they are all within the
range of what is now recognized as tidal Influence. In
other words, the static level of the wells goes up *hen
the tide is high and drops when the tide is low. Sinqe
these recent figures are recorded without reference to ti
dal differences, there is every good reason to believe that
all the differences recorded in this two year period are
simply differences in tidal influence. In a recent
twenty-four hour test, it was found that the static level
of water Well ^9 at Malamlr varied as much as 0.61 ft.
from high to low tide.
When one considers the original head of the well
when completed in June 1936, as related to the present water
levels, a definite drop is apparent. Comparing the ori
ginal head of five feet with the most recent figures,
reduced to the same datum, it is found that the static
level has dropped between 1.74 and 2.35 feet. These limits
are made necessary by the fact that the original measure
ments did not consider the tidal influence. On this basis
a figure of 0,435 to 0.587 feet per year drop in static
head is calculated.
At Sitra isuks, Water Well / 5 shows a smaller
raue of decline. This well wes reported as having a head
of three feet on its completion March 22, 1936. Recent
observations show that there is 1.02 of a foot variation
in this well due to tide influence. On this basis, a
drop of from 0.31 to 1.33 feet is calculated from March
1936 A

About this item

Content

The documents in this file are all related to the natural water supply of Bahrain.

They include two detailed surveys of the island's water supply, correspondence concerning the status of Bahrain's artesian wells, concerns about the wastage of water in gardens owned by Shaikh Hamad bin Isa Al Khalifa (and other members of the Al Khalifa family) and more general correspondence regarding the usage of water in Bahrain.

Extent and format
1 volume (45 folios)
Arrangement

File is arranged in chronological order, from earliest at beginning of the file to most recent at end.

Physical characteristics

Previously a bound volume, its sheets have been unbound and are now loose. Foliation starts with 1A for the file cover. The first page of the volume is 1B. It continues to the last page. Foliation in pencil numbers in top right corner of recto The front of a sheet of paper or leaf, often abbreviated to 'r'. . Additional foliation has been rubbed out but is still faintly visible. Further foliation starts with 31 on f.21 and continues to f.27. It is then also rubbed out but traces remain visible. Due to foliation error, we have f.36A and f.36B instead of f.36.

Written in
English and Arabic in Latin and Arabic script
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'File 19/252 Bahrain Water Supply' [‎15r] (31/96), British Library: India Office Records and Private Papers, IOR/R/15/1/376, in Qatar Digital Library <https://www.qdl.qa/archive/81055/vdc_100023472486.0x000020> [accessed 29 March 2024]

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