Hydroelectric
Power
Plants
Site
Selection
The
purpose
of
the
chapter
is
to
inroduce
the
readers
with
different
types
of
hydro
electric
power
plants
and
make
them
conversant
with
various
parts
of
the
plant
and
their
functions.
Hydro
Electric
Power
Plant
Site
Selection
or
Hydro-electric
Power
Plants.
In
the
choice
of
location
for
hydro
power
plant,
several
features
may
be
involved
like
dam,
conduits,
intakes,
surge
tank,
power
house
and
many
others.
There
is
no
easy
answer
to
the
question
raised,
which
is
suitable
site
for
a
hydel
power
plant?
The
only
solution
is
to
study
several
alternative
layouts
and
adopt
one
which
appears
to
be
most
economical.
Sometimes
the
most
desirable
location
is
aprarent
to
an
experienced
engineer.
Sometimes
there
is
no
choice
for
site
except
considerable
investigation
and
study
are
required
to
determine
the
most
economical
location
The
scope
for
the
site
investigations
depends
partly
on
the
availability
of
existing
published
data,
partly
on
the
nature
and
size
of
the
proposed
plants,
and
partly
on
the
difficulties
presented
by
the
existing
topographical
and
geological
features
which
in
turn
affects
the
number
of
alternatives
which
have
to
be
tried
out.
It
is
a
common
practice
for
both
office
studies
and
siteinvestigations
to
be
carried
out
in
two
main
stages.
I
Preliminary
Investigation The
purposes
of
preliminary
investigations
are
to
provide
sufficient
information
to
find
out
the
practicability
of
the
proposed
scheme
and
to
choose
between
alternative
schemes.
The
preliminary
designs
and
estimations
can
be
prepared
and
recommendations
are
made
with
reasonable
confidence.
2.
Final
investigations The
final
invesigationinclude
the
detailed
exploration
of
the
recommended
site
so
as
to
establish
the
complete
suitability
and
to
enable
the
final
designs.
The
preliminary
and
final
investigations
include
mainly
(a)
hydrological
(b)
topographical
and
(c)
geological
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