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ROD-KOHI SYSTEMS

WATER MANAGEMENT IMPROVEMENTS FOR ROD-KOHI SYSTEMS Engr. M. Zaheer-ul- Ikram WATER RESOURCES RESEARCH INSTITUTE NARC, ISLAMABAD. ROD-KOHI SYSTEMS. Non-Perennial Floodwater Sulaiman Ranges of D.I.Khan, D.G.Khan, Barkhan, Loralai and Zoab Kacchi Plain, Lasbela and Kharan Basin of Balochistan

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ROD-KOHI SYSTEMS

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  1. WATER MANAGEMENT IMPROVEMENTS FOR ROD-KOHI SYSTEMSEngr. M. Zaheer-ul- IkramWATER RESOURCES RESEARCH INSTITUTENARC, ISLAMABAD

  2. ROD-KOHI SYSTEMS • Non-Perennial Floodwater • Sulaiman Ranges of D.I.Khan, D.G.Khan, Barkhan, Loralai and Zoab • Kacchi Plain, Lasbela and Kharan Basin of Balochistan • Kirther Range of Jamshoro (Thana Boula Khan), Dadu & Larkana • Perennial Kalapani • D.I.Khan, D.G.Khan, Zhob, Loralai, Kacchi Plain

  3. Potential for Development * Mater Feasibility Studies for Flood Management of Hill-Torrents, NESPAK, 1998.

  4. WHY ROD-KOHI IMPORTANT? • Rod-Kohi helps for: • Water Spreading • Maintaining Soil Moisture • Maintaining Soil Fertility • Recharging Groundwater • Sustainability of Kalapani • Supporting Surface Cover and Natural Vegetation

  5. TECHNICAL ISSUES • Inherent uncertainty and unpredictability • Wet and dry years • High risks and not equally distributed • Active land formation - scour and siltation • Silting of nullahs leading to flood hazards • Inadequate and inappropriate diversion • Inequity in distribution of share of water • Tail-end water users - affected in both extremes of flood and drought

  6. SOCIAL/INSTITUTIONAL ISSUES • System deterioration • Water rights • Lack of institutional support to water users • Lack of co-ordination among public sector institutions

  7. ECONOMIC ISSUES • Marginal returns • Difficulty in competing with alternative sources of income • High failure rate of schemes built by public sector • Insufficient provision for water storage (domestic and stock water use) • Substantial investments required

  8. R&D Activities

  9. Water Distribution Structure at D.I.Khan

  10. Water Regulating Diversion Structure at D.I.Khan

  11. Water control , Diversion & Regulating Structure at Main Stream

  12. Water Distribution Structure at D.I.Khan

  13. Water Distribution Structure at Barkhan

  14. Water Distribution Structure at Barkhan

  15. Earthen Diversion Bund at D.I.Khan

  16. Plastic Lining at Critical Sections

  17. Water Application and Drainage Structures

  18. Irrigating the Rod-Kohi field

  19. Water Application and Drainage Structure

  20. Water Conveyance Irrigation Systems

  21. Remodeling of Rod-Kohi Tributary of Nullah Gomal

  22. Remodeled Water Conveyance Irrigation System

  23. Pipe-Flow Irrigation Systems On Farmers’ Dugwells, Barkhan

  24. Plantation of Fruit Trees under Pipe Flow Irrigation Systems

  25. Water Bank and Lined Water Channelat Mithawan Watershed

  26. Water Diversion and Control Structures with Earthen Improvement, Mithawan Watershed

  27. Command Area Development

  28. Development of New Areas at Mithawan Watershed

  29. Conveyance of Water in Rugged Mountainous Terrain

  30. Aqueductcoupled with pre-cast parabolic Lining

  31. Low Cost Lining of Water Channel

  32. Lining of Water Channels

  33. LDPE Film Lining 250 Micron

  34. 4.5 inch Brick Lining Pre-casted Parabolic Lining

  35. Water Harvesting and Check Dams

  36. Earthen Water Storage Reservoir at Mithawan Watershed

  37. Earthen Ponds and Lining with Plastic Films at Barkhan

  38. Check Dam

  39. Construction of Check Dam at Mithawan Watershed

  40. Eyebrow Terraces for Mazri & Plantation of Forest Trees at Barkhan

  41. Some failed interventions

  42. Small Dam constructed by JICA for initiating Watershed Management in Mithanwan Watershed – not holding water

  43. Water control/ distribution system at Choti Balaa (Mithawan Dam) – silted after 2 floods

  44. Water control and distribution system at Choti Bala

  45. Water control and distribution system at Choti Bala

  46. OPTIONS

  47. Managing Outflow at Upstream • Construction of storage dams at upstream to induce groundwater recharge and support watershed management activities • Construction of check structures in highlands to reduce the velocity of water and trapping of silt

  48. Reducing Existing Losses in Conveyance Network & Crop Fields • Improving the water conveyance system • Construction of water distribution system at the tertiary level • Construction of field outlets • Development of earthen ponds for domestic and stockwater use • Addressing land levels

  49. Enhancing Productivity-I • Focus on pulses, fodders, wheat and oilseeds • Research to breed cultivars which extract water from deeper depths • Research to develop drought tolerant fruit plants

  50. Enhancing Productivity-II • Research to develop low-cost drinking and stock water use technologies • Research to develop high efficiency irrigation systems and high-value agriculture • Reorienting Agriculture Extension for the Rod-Kohi areas

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