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Improvement of Water Distribution System in Minor Irrigation Project: Pvc and Plastic Pipe System-2000

M Nurul Islam
CSO and Head
Irrigation and Water Management Division, BRRI, Gazipur-1701, Bangladesh

Dr Shahana Parveen
SSO
Irrigation and Water Management Division, BRRI, Gazipur-1701, Bangladesh

Dr M Mahbubul Alam
SSO
Irrigation and Water Management Division, BRRI, Gazipur-1701, Bangladesh

Dr. Md. Maniruzzaman,
PSO
Irrigation and Water Management Division, BRRI, Gazipur-1701, Bangladesh

Abstract/ Executive Summary:

Minor irrigation projects of the country get water loss about 30 to 40 percent of total supplied water through the earthen channels at the time of distribution. In most irrigation projects where deep tubewell (DTW) or STW water is distributed through earthen channel. As a result where cracks occurred in the channels, water lost through seepage and percolation. To minimize the loss as well as to increase irrigated area, the study has been conducted at Biprobartha village of Gazipur district. In order to fulfill the objectives of the study, 200 m PVC (133 m of 15 cm dia and 67 m of 10 cm dia) pipes were installed a main channel and 200 m plastic pipe was used as field channels during boro season. Initially the command area was 18.89 ha. After installation of PVC pipe total command area achieved 26.7 ha in 1999-2000 (command area was increased about 42%). Among these command area about 8.5 ha is under PVC and plastic pipe distribution system. In PVC pipe, conveyance loss ranges from 1.0-1.5 lit/sec/100 m due to leakage and pipe fittings. But, in earthen channel the conveyance loss becomes 6-8 lit/sec/100 m. If we extend the PVC and plastic pipe distribution system into the whole project a remarkable area may be increased or reduce the pumping hour as well as to reduce the operating costs.

Keywords: DTW, Command area, Minor irrigation

Location: Biprobartha village of Gazipur district

Start Date: 01-07-1999

End Date: 30-06-2000

Program Area: Crop-Soil-Water Management

Commodity: Command area development

Objectives:

To minimize the loss as well as to increase irrigated area

Methodology:

The study has been conducted at Biprobartha village of Gazipur district. In order to fulfill the objectives of the study, 200 m PVC (133 m of 15 cm dia and 67 m of 10 cm dia) pipes were installed a main channel and 200 m plastic pipe was used as field channels during boro season.

Source of Information: Proceedings of the BRRI Annual Review for 2000, BRRI, Gazipur-1701, Bangladesh

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Initially the command area was 18.89 ha. After installation of PVC pipe total command area achieved 26.7 ha in 1999-2000 (command area was increased about 42%). Among these command area about 8.5 ha is under PVC and plastic pipe distribution system. In PVC pipe, conveyance loss ranges from 1.0-1.5 lit/sec/100 m due to leakage and pipe fittings. But, in earthen channel the conveyance loss becomes 6-8 lit/sec/100 m. If we extend the PVC and plastic pipe distribution system into the whole project a remarkable area may be increased or reduce the pumping hour as well as to reduce the operating costs.

Knowledge Management: Report/Proceedings