1. Presented by-
Assistant Executive Engineer,
Water Resources Department
Government of Maharashtra.
15th Induction Training: WALMI
A’bad.
29 April 2008
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2. Worksheets for-
Computation of BCR according to CWC
Guidelines.
Preliminary Irrigation Programme.
Design of Drip & Sprinkler Irrigation System.
Land leveling.
Rate of Infilteration
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3. Feasibility tests:
Engineering/Technical
feasibility
Economic feasibility
Financial feasibility
Social feasibility
Political feasibility
Environmental
feasibility
Discounted Cash
Flow Techniques:
Benefit-Cost Ratio
(BCR) Method
Net Present Worth
method
Internal Rate of
Return (IRR)
Method
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4. BCR continue…
Compounding:
It is the process by which
future values of the
present payments can be
determined with certain
interest rate.
Discounting:
It is the process by which
future payments can be
converted to present by a
discount rate.
Worksheet
for BCR
computatio
n
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6. 6
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Design of
Sprinkler
Irrigation
Method
Design of
Drip
Irrigation
Method
7. Objective
Better Aeration
Efficient Water
Application
Better drainage,
without erosion.
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What is Land
Forming:
Process of providing
planned grade for
better aeration and
efficient water
application on farm.
8. Land Forming Techniques
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Land Smoothening: Process of
forming uniform slope in the
direction of irrigation without
changing the natural land
slope.
Land Grading: Process of
developing desired land slope
in the direction of irrigation by
changing natural land slope
Land Leveling: It is the process
of giving zero slope in the
direction of irrigation and as
well as in cross direction.
9. Land Leveling
This technique is
mainly used for
basin irrigation
where low land
paddy is grown and
field-to-field
irrigation is
practiced.
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Worksheet
for Land
Leveling
10. Infilteration: It is the
downward entry of water
into the soil.
Infiltration rate (Ir): The
actual rate at which the
water enters the soil under
specified conditions
Cumulative Infiltration (Y):
It is the quantity of water
that enters the soil in a
given time
Measurement of
Infilteration:
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1 • Concentric Cylinder Infiltrometer
2 • Basin Ponding Test.
3 • Blocked Furrow Infiltrometer
