Inmagic DB/Text WebPublisher PRO: 1 records

Your search found 1 records

1 Mirjahan, M.. 1986. Evaluation of deep tubewell irrigation systems. In Bangladesh Agricultural Research Council and Winrock International Institute for Agricultural Development, Methodologies to evaluate the performance of irrigation systems (pp. 169-186). Dhaka, Bangladesh: BARC and Winrock International.

Performance evaluation ; Deep tube wells ; Tube well irrigation ; Channel improvement ; Irrigation practices / Bangladesh

(Location: IWMI-HQ Call no: 631.7.8 G584 BAN Record No: H01682)

The paper describes a field-oriented evaluation of the performance of eleven deep tubewell (DTW) based irrigation systems. In addition, the study served as a basis for developing a model that can be used in predicting the impact of various interventions (i.e., improvement of earth channels, lining of canals, upgrading on-farm water management practices, increase in pumping hours, etc.) on command area expansion. The methodology followed included intensive field data collection in five DTW command areas in Dhamrai (near Dhaka) and six DTW command areas in Thakurgaon (in northwest Bangladesh). Performance parameters utilized included conveyance, application, overall irrigation, unit, and pumping plant efficiencies. The impact of each of the interventions considered was then determined by comparing the predicted command under the modified system with that under the existing conditions. This, in turn, provides the necessary information for cost effectiveness analysis. The analysis indicates that DTW command areas could be increased significantly through measures including improvement of main and field channels, improvement of plot channels, better on-farm water management, land-levelling, and longer operating hours.