2. Water conservation encompasses
the policies, strategies and activities
to manage fresh water as a
sustainable resource to protect the
water environment and to meet
current and future human demand.
Population, household size and
growth and affluence all affect how
much water is used. Factors such
as climate change will increase
pressures on natural water resources
especially in manufacturing and
agricultural irrigation.

3. Rainwater harvesting is the
accumulation and deposition of
rainwater for reuse before it
reaches the aquifer. Uses include
water for garden, water
for livestock, water
for irrigation, and indoor heating
for houses etc.. In many places the
water collected is just redirected to
a deep pit with percolation. The
harvested water can be used
as drinking water as well as for
storage and other purpose like
irrigation.

4. Watershed management is the study
of the relevant characteristics of a
watershed aimed at the sustainable
distribution of its resources and the
process of creating and implementing
plans, programs, and projects to
sustain and
enhance watershed functions that
affect the plant, animal,
and human communities within a
watershed boundary.Features of a
watershed that agencies seek to
manage include water supply, water
quality, drainage, storm water
runoff, water rights, and the overall
planning and utilization of watersheds.