The Rural Voice, 1991-08, Page 43water as well as harming fish and other
aquatic life. Also, certain blue-green
algaes produce toxins which are harm-
ful to warm-blooded animals when in-
gested. Blooms of this type have in the
past been responsible for several beach
closures across Southern Ontario. Bac-
teria and viruses can pose a health threat
to downstream users of water that has
been contaminated with animal ma-
nures. Disease causing organisms such
as scours, dysentry, salmonellosis, and
leptospirosis can also be transmitted
from infected herds to users down-
stream.
Proper containment and disposal of
runoff can be managed through:
• a covered solid manure storage;
• a liquid manure storage system, or
• a solid manure storage with a runoff
containment structure.
A covered system may involve roof-
ing storage areas and feedlots which
would eliminate the need for a separate
runoff containment system and the asso-
ciated liquid handling and spreading
equipment. A liquid manure system
may be the best alternative for a farmer
who wishes to collect the solid and liq-
uid fractions in one area. Circular or
open concrete or steel tanks, covered
concrete and earthen pits can be used for
liquid storage. A separate runoff stor-
age is a viable option for the collection
of runoff from open solid manure
stacks, feedlots, and barnyards.
With paved solid manure pads, feed-
lots or barnyards, a concrete curb, wall,
or earthen berm can be used to direct the
contaminated liquids to the runoff stor-
age and keep clean surface water out.
This type of measure will lengthen stor-
age time and reduce spreading costs.
With proper manure management we
can best use manure as a resource while
minimizing the impact to local rivers
and streams.0
This is another in a series of articles
by Janette Smiderle of the Saugeen
Valley Conservation Authority, high-
lighting information on water quality in
the rural evnironment.
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AUGUST 1991 39