2008 walmi excel-worksheets

Presented by-

Assistant Executive Engineer,Water Resources Department

Government of Maharashtra.

15th Induction Training: WALMI A’bad.

29 April 2008

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PREPARATION OF EXCEL WORKSHEETS

Er. Pravin Kolhe

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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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CONTENT

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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1. COMPUTATION OF BCR ACCORDING

TO CWC GUIDELINES

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 computation

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Worksheet for PIP

2. PRELIMINARY IRRIGATION PROGRAMME.

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Design of Sprinkler Irrigation Method

Design of Drip Irrigation Method

3. DESIGN OF DRIP & SPRINKLER IRRIGATION

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.

4. LAND FORMING

Land Forming Techniques

1 •Land Smoothening

2 •Land Grading

3 •Land Leveling

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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.

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

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 •Concent ric Cylinder Infiltromet er

2 •Basin Po nding Test.

3 •Blocked Furrow Infiltrometer

5. RATE OF INFILTERATION

Concentric Cylinder Infiltrometer

Worksheet for Rate of Infilteration

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© Pravin Kolhe, 2008 http://www.pravinkolhe.com/

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