WSP06585

• File Number: 8112.600
• Description: Arkansas White Red Basins Interagency Committee - AWRBIAC -- Reports
• Basin: Arkansas
• Water Division: 2
• Date: 1/30/1951
• Title: Report of the Hydrologic Subcommittee on Water Availability and Quality in the Arkansas-White-Red Basins
• Water Supply Pro - Doc Type: Report/Study

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TABLE l-A (Cont I d)

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CO

Item

Explanation

Dissolved oxygen.

5-day biochemical o~jgen
demt4"ld at 20oC. (B,O.D.)

Dissolved solids.
Total dicsolved solids,
chlorides, sulfatec, lead, I
fluorides, nitr~tes,
sele:1iu!n, arsenic, hexava- ,
lent cl1TOJ:li'~L~, copper, iron I
manganese, zinc, calciQ~, ,
magnesium, carbonates, and '
other Subctfu,ces toxic to
humans, fish or anim&l or
injurious to industrial
processes or a~iculture.

Total hardness.

Essential to natural purification of streams
and the maintenance of aquatic life, is
drawn upon to support biochemical oxidation
of organic waste and is replaced by absorp-
tion from the atmosphere and the photosyn-
thetic action of some water plants including
algae. A deficiency in dissolved oxygen
belovl the saturation level indicates the
presence of pollutinb organic substances
which are absorbing oxygen from the stream
water. The degree of this deficiency is a
measure of the deoxy!;enating effect of the
pollutinG matter and hence un index of the
debTee of pollution in a particular stream
zone.

Indicates tl1e amount of dissolved o~Jgen
which may be expected to ')e absorbed from
the stream waeer in 5 days at 20oC. to
support the biochemical oxidation of the
organic pollution carried by the stream
at the point of sam?ling.

Of particular significance in determining
suitability for source of drinking water
supply, industrial water sup,lly, fish and
wildlife, or irrigation,

Due to existance of calcium, magnesium, iron
and mmganese, \'I'nich cause curdling when soap
is used, deposition of scale in boilers,
injurious effects in some industrial
processes.

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