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EVALUATION OF SPATE WATER DISTRIBUTION AND APPLICATION STRUCTURES

EVALUATION OF SPATE WATER DISTRIBUTION AND APPLICATION STRUCTURES. Dr. M. Munir Ahmad Engr. Zafar Islam Engr. Fazal Minallah Water Management of Spate Irrigation Systems PARC, D. I. Khan. INTRODUCTION. Earthen Structure ; Not Dependable Labour intensive and Time Consuming

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EVALUATION OF SPATE WATER DISTRIBUTION AND APPLICATION STRUCTURES

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  1. EVALUATION OF SPATE WATER DISTRIBUTION AND APPLICATION STRUCTURES Dr. M. Munir Ahmad Engr. Zafar Islam Engr. Fazal Minallah Water Management of Spate Irrigation Systems PARC, D. I. Khan

  2. INTRODUCTION • Earthen Structure ; • Not Dependable • Labour intensive and Time Consuming • Need repair after each spate • OBJECTIVES • Develop and adapt water Management technologies • for distribution/diversion and application of spate water

  3. PROCESS FOR SELECTION OF SITES AND EXECUTION • Reconnaissance Surveys • Local community approach • Visit field with the community • Discusiion for Water rights • Planning for survey

  4. CONTINUED…….. • PEAK AND AVERAGE FLOW ESTIMATION • DESIGN Preparation • Implementation Schedule • ESTIMATION OF THE MATERIAL & Cost • PARTICIPATORY EXECUTION • Participatory MONITORING & EVAULATION

  5. PARAMETER FOR EVALUATION • Hydraulic Discharge, Sedimentation, Velocity , Erosion • Social Water Rights, Change in Livelihood • Economic Fixed and variable cost, Cost benefit

  6. 3-D View of a Field inlet/Outlet

  7. Advantages • Can close inlet after irrigation easily and avoid water flowing back out • Can use it to irrigate next field

  8. Improved Design of a Diversion Structure Include Bearings for easy operation

  9. Advantages • Avoid conflicts • Regulate flow division • Irrigate several areas simultaneously

  10. Frequency of Spate Water Arrival during 2006, Daraban Zam

  11. Duration of Spate Water during 2006, Daraban Zam

  12. Discharge and area to be irrigated from various structures

  13. DIVERSION / DISTRIBUTION OF WATER

  14. Farmers Benefited from Distribution Structure

  15. Area Increase for Irrigation Due to the Structure

  16. Percentage Share of Cost

  17. COST OF GATED STRUCTURES FOR WATER DIVERSION AND CONTROL

  18. Impacts • Strengthen Village organization. • No conflict during 2006 • Irrigated area increased • Farmer made a rules for contribution to maintain the structure • Farmer from the other villages who irrigated from the structure are willing to contribute. • Less pressure on main bund

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