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Study on Topographic Characteristics of Farm Land

Dr. Mesbauddin Ahmed
Professor (Rural Hydrology and Mechanization Specialist)
Department of Irrigation and Water Management, Bangladesh Agricultural University, Mymensingh-2202

Abstract/ Executive Summary:

It revealed from the survey that the elevations of farm lands at a distance of about 700 m from the homestead area towards south is relatively higher than that of farm lands adjacent to homestead area. This indicates that more sediment were accumulated over there making the area concave in shape. The elevations of the homestead area were found to vary from 1.00 m to 1.50 m from the adjacent farm land. The highest and the lowest elevations of the farm lands studied were 100.16 m and 98.33 m, respectively. This indicates a difference of 1.83 m in elevation within the farmland studied. This will act as guidelines for various agricultural management practices as well as in design and layout of farm irrigation systems.

Keywords: Undulation nature, Farm plots, Elevation, Irrigation equipment, Water distribution system.

Location: Purbo Tethulia, a Haor Village of Netrakona District

Start Date: 00-04-2010

End Date: 00-06-2013

Program Area: Crop-Soil-Water Management

Commodity: Land development productivity

Objectives:

To determine the undulation nature of the farm plots.
To know the elevation differences between the adjacent plots.
To generate the guidelines for installation of irrigation equipment and thereby to align irrigation water distribution system.

Methodology:

The entire land area surveyed (about 110 acres, located towards south and south-east of homestead area) was divided into a number of grids having a dimension of 30 m × 30 m. The reduced level (RL) of each of the intersection point of the gird system was determined by a “level” and a “staff” using Line of Collimation Method. During the leveling operations, a ‘datum’ was assumed at a depth of 100 m, which is an imaginary surface with respect to which the heights of different points on the earth’s surface were determined. The elevation of any point with reference to the assumed datum was the RL of that point.

Source of Information: SPGR Sub-Project Completion Report; LIVELIHOOD IMPROVEMENT OF FARMING COMMUNITY IN HAOR AREA THROUGH SYSTEM APPROACH; March 2010 to June 2013, Department of Agronomy, Bangladesh Agricultural University, Mymensingh. PIU-BARC, BARC Complex, Farmgate, Dhaka-1215, October 2013

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Known topographic characteristics of farm land which will help planning and management of agricultural activities including irrigation water distribution system.

Knowledge Management: Report/Proceedings