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Improvement of Water Distribution System in Minor Irrigation Project:pvc and Plastic Pipe Distribution Systems-1999

M Nurul islam
CSO and Head
Irrigation and Water Management Division, BRRI, Gazipur-1701, bangladesh

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

Dr Shahana Parveen
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:

Farmers’ managed one DTW at Bibrobartha, Gazipur was selected to conduct the study in Boro,1996-97 and continued this to boro 1998-99. The following features were identified from the survey of the DTW:Topography of the DTWs command area is undulated, Main and field channels were earthen. A lot of cracks and rat holes were observed in the channels, Command area are lengthy ie. The longest canal is about 800 m, Irrigation coverage for the last 3 years (1995-1997) ranged from 18.89 to 19.57 ha during boro season as against the irrigable area of 34 ha, Farmers used both power tiller and country plough for land preparation. About 35 days required to complete and preparation activities. About 200 m PVC (133 m of 15 cm dia and 67 m of 10 cm dia ) pipes were installed as main channel and 200 m plastic pipe was used as field channels during boro season in 1998-1999. Fifteen cm dia PVC and 10 cm dia plastic pipes were used in the distribution system with the help of reducer attached to the 20 cm dia discharge pipe of DTW. Initially the command area was 18.89 ha. After installation of PVC pipe total command area achieved 26.7 ha in 1998-99 (command area was increased about 42%). Overall the following benefits can be achieved after the installation of PVC pipe in the DTW irrigation system. Reduced 100% conveyance loss in the selected channels, Water reached rapidly at the end of the channel, and the nearest and furthest farmers were able to prepare their lands simultaneously, Easy installation, operation and maintenance, Able to irrigate lands have a higher elevation than the discharge outlet/canal, Less time is required to irrigate unit area, Land preparation within the command area was completed within 20 days by using power tiller due to quick supply of water on the field, Irrigation coverage was increased and it was 26.7 ha during 1998-99 boro season, Two or three labor can install the pipes in one day, No trouble to irrigate upper land, some land saved against earthen channel, Less cost required for repair and maintenance and suitable for undulated area irrigation.

Keywords: Water distribution system, Minor irrigation, DTW

Location: Bibrobartha, Gazipur

Start Date: 01-07-1998

End Date: 30-06-1999

Program Area: Crop-Soil-Water Management

Commodity: Command area development

Objectives:

To document the existing water management practice of farmers’ managed deep tubewell irrigation project
To determine technical performance of PVC and plastic pipe distribution systems

Methodology:

About 200 m PVC (133 m of 15 cm dia and 67 m of 10 cm dia ) pipes were installed as main channel and 200 m plastic pipe was used as field channels durig boro season in 1998-1999. Fifteen cm dia PVC and 10 cm dia plastic pipes were used in the distribution system with the help of reducer attached to the 20 cm dia discharge pipe of DTW.

Source of Information: Proceedings of the BRRI Annual Review for 1999, BRRI, Gazipur-1701, bangladesh

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Overall the following benefits can be achieved after the installation of PVC pipe in the DTW irrigation system. Reduced 100% conveyance loss in the selected channels, Water reached rapidly at the end of the channel, and the nearest and furthest farmers were able to prepare their lands simultaneously, Easy installation, operation and maintenance, Able to irrigate lands have a higher elevation than the discharge outlet/canal, Less time is required to irrigate unit area, Land preparation within the command area was completed within 20 days by using power tiller due to quick supply of water on the field, Irrigation coverage was increased and it was 26.7 ha during 1998-99 boro season, Two or three labor can install the pipes in one day, No trouble to irrigate upper land, some land saved against earthen channel, Less cost required for repair and maintenance and suitable for undulated area irrigation.

Knowledge Management: Report/Proceedings