Water harvesting

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How catching water from rooftops, dams and greenhouses for use in agriculture is done on our farm

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Water harvesting

  1. 1. 10,000 sq m/hect x 1.6m/year = 16,000,000 liters/hect/year
  2. 2. swales Pond 5 Pond 4 swales Pond 0 Pond 1 swales Pond 2 Pond 3 Water harvesting hardware - road swales re wa ad rd ro ha Dorms Pond 00 & ing t ho es se harv ld -h ater Orphanage ou W Pond 00 - ridge dam Pond 0 - contour dam Pond 1 - contour dam swales Pond 2 - barrier/check dam Pond 3 - keyline dam Pond 4 - saddle dam Pond 5 - ridge dam5 year Master development plan - 3 hectares - tropical - 1,600mm annual rainfall 30% pasture, 30% forest,15% water, 25% fruits/vegetables 12,000L rainwater storage
  3. 3. swales Pond 5 Pond 4 swales Pond 0 Pond 1 swales Pond 2 Pond 3 Water harvesting hardware - road Zone 3 Zone 5 Zone 4 swales re wa Zone 2 ad rd ro ha Dorms Pond 00 & ing t ho es se harv ld -h ater Orphanage ou W Pond 00 - ridge dam Pond 0 - contour dam Pond 1 - contour dam swales Pond 2 - barrier/check dam Pond 3 - keyline dam Pond 4 - saddle dam Pond 5 - ridge dam5 year Master development plan - 3 hectares - tropical - 1,600mm annual rainfall 30% pasture, 30% forest,15% water, 25% fruits/vegetables 12,000L rainwater storage
  4. 4. Key line52 m Approximate average hill profile 30 m 200 meters
  5. 5. 2012 2013 20112001 2005 Aloha House
  6. 6. Dam 1
  7. 7. Dam 1
  8. 8. Swale 1
  9. 9. Swale 2Swale 1
  10. 10. Swale 3
  11. 11. Swale 3
  12. 12. The SwaleThe best way to maximize rainwater is by slowing it down sothat it can soak into the ground.Give it the longest path on theslowest course. Water harvesting technique on contour with the land
  13. 13. Swale 3
  14. 14. Swale 3
  15. 15. The Swale Water harvesting ditch Soft mound of soil on contour with the landplanted with cover crop downhill of ditch Water harvesting technique on contour with the land
  16. 16. The Swale Water percolates through to the lower soil 2 ways
  17. 17. The Swale Swale Ditch Water percolates through to the lower soil 2 ways
  18. 18. Swale 3
  19. 19. The Swale Water percolates through to the lower soil 2 ways swale ditch
  20. 20. The Swale Water percolates through to the lower soil 2 ways
  21. 21. The Swale Water percolates through to the lower soil 2 ways
  22. 22. The Swale Water percolates throughWater provides extra to the lower soil 2 waysgrowth potential in the soil system
  23. 23. swale
  24. 24. swale
  25. 25. swale
  26. 26. Marked swale
  27. 27. Existing Pond SitePond 1
  28. 28. 10 months in drum
  29. 29. Existing Pond Site Pond 1 Swale 2 Swale 1
  30. 30. Dam Construction
  31. 31. Dam Construction Dam Failure
  32. 32. Dam Construction Dam Failure
  33. 33. Dam Construction Dam Failure
  34. 34. Dam ConstructionRemove valuabletopsoil for later use Dam Integrity
  35. 35. Dam ConstructionRemove valuabletopsoil for later use Dam Integrity
  36. 36. Dam ConstructionThe dam key is thelock in the soil thatallows a safety marginand prevents waterfrom undermining thedam dam key Dam Integrity
  37. 37. Small Barrier dam for silt collection and protection of lower dams
  38. 38. Small Barrier dam for silt collection and protection of lower dams
  39. 39. Small Barrier dam for silt collection and protection of lower dams
  40. 40. Dam ConstructionThe dam key is thelock in the soil thatallows a safety marginand prevents water Compressed soilfrom undermining thedam dam key Dam Integrity
  41. 41. Dam ConstructionThe dam key is thelock in the soil thatallows a safety marginand prevents water Compressed soilfrom undermining thedam dam key Dam Integrity
  42. 42. Dam ConstructionFreeboard is the levelabove water thatallows a safety margin Freeboardin case of a big rainevent Dam Integrity
  43. 43. Dam Construction•Replace valuabletopsoil for replantingand preventing muddywater Dam Integrity
  44. 44. Dam Construction Shade slows evaporation•Replace valuabletopsoil for replantingand preventing muddywater•Plant cover crop toprevent silt•Trees are not in dam-- to preventleaks/weakness Dam longevity
  45. 45. Existing Pond Site1. Deepen pond2. Fill old spillway3. Add swale Pond 1
  46. 46. 1. Deepen pond 2. Fill old spillway 3. Add swale w/ spillway Pond 1 old spillway swalespillway
  47. 47. swalespillway Filling The swale with a spillway tied to a dam collects water and flows it to the dam till it is full then backflows to the spill way gently releasing the rain water overflow through the spillway.
  48. 48. swale Releasingspillway The swale with a spillway tied to a dam collects water and flows it to the dam till it is full then backflows to the spill way gently releasing the rain water overflow through the spillway.
  49. 49. Pond 1
  50. 50. Pond Site Pond 1
  51. 51. 1. Remove topsoil2. Cut dam key3. Build dam4. Add swale w/ spillway Pond 2
  52. 52. Pond Site Pond 2
  53. 53. Pond 2 dam swale
  54. 54. Dam key to lock soilSmall Barrier dam for silt collection and protection of lower dams
  55. 55. Pond 2Pond 1
  56. 56. Pond 1
  57. 57. Pond 2 Pond 1
  58. 58. Pond Site Pond 2
  59. 59. Pond 2
  60. 60. Pond 1
  61. 61. Pond 2Pond 1
  62. 62. Pond 2 Pond 1
  63. 63. Wall material after top soil is removed Pond 3 Pond 2
  64. 64. Pond 3Lowest edge Dam key Baffle drain
  65. 65. Pond SitePond 3
  66. 66. Pond 3 swaleDam 2 swale
  67. 67. Dam 3 Dam 2Pond 3
  68. 68. Pond 3Dam 3
  69. 69. Pond SitePond 3
  70. 70. Road improvement for water catchment Established vetiver for erosion control
  71. 71. Road improvement for water catchment
  72. 72. Dam key to lock soil
  73. 73. Dam key to lock soil
  74. 74. Pond 3Pond 2
  75. 75. Pond 3
  76. 76. Pond 3
  77. 77. Pond 3
  78. 78. Pond 3
  79. 79. Pond 3
  80. 80. Pond 3
  81. 81. Pond 3Established vetiver for erosion control
  82. 82. Pond 3Established vetiver for erosion control
  83. 83. Water Harvesting Drain pipesDrainpipe withoutbaffles will fail Dam Integrity
  84. 84. Water Harvesting Drain pipes baffles stop leaks Drainpipe with baffles
  85. 85. Water Harvesting Drain pipes 1” drain for irrigation baffles stop leaks2” drain for irrigation Drainpipe with baffles
  86. 86. baffles stop leaks
  87. 87. Inlay drain pipe
  88. 88. Manually pack drain pipe
  89. 89. Manually pack drain pipe
  90. 90. Manually pack drain pipe
  91. 91. Manually pack drain pipe
  92. 92. Manually pack drain pipe
  93. 93. Established vetiver for erosion controlMachine pack in layers
  94. 94. Established vetiver for erosion control
  95. 95. Moving vetiver for seedling multiplicationEstablished vetiver for erosion control
  96. 96. Moving vetiver for seedling multiplicationEstablished vetiver for erosion control
  97. 97. Moving vetiver for seedling multiplicationEstablished vetiver for erosion control
  98. 98. Established vetiver for erosion control
  99. 99. contourkeyline
  100. 100. Gulley 2 Gulley 3 Gulley 4 Gulley 5 Established vetiver for erosion control
  101. 101. Banana ring
  102. 102. 6 monthsEstablished vetiver for erosion control
  103. 103. 12 monthsEstablished vetiver for erosion control
  104. 104. Established vetiver for erosion control
  105. 105. Pond SitePond 3
  106. 106. swales Pond 5 Pond 4 swales Pond 0 Pond 1 swales Pond 2 Pond 3 Water harvesting hardware - road swales re wa ad rd ro ha Pond 00 & ing t ho es se harv ld -h ater ou W Pond 00 - ridge dam Pond 0 - contour dam Pond 1 - contour dam swales Pond 2 - barrier/check dam Pond 3 - keyline dam Pond 4 - saddle dam Pond 5 - ridge dam5 year Master development plan - 3 hectares - tropical - 1,600mm annual rainfall 30% pasture, 30% forest,15% water, 25% fruits/vegetables 12,000L rainwater storage
  107. 107. Hitachi work order• Canal/road to pond 2• Pond 1 - Drain pipe w/ baffles – Cut slot – Soil goes to road• Clean up pond 1 – Soil goes to pipe slot – Extra soil to road – Improve swale from pond 2• Pond 3 clay removal – Vetiver removal – Cut key – Deep scraping and piling – Compacting – Banana rings – Swale spillway – Pond 3 - Drain pipe w/ baffles• Pond 0• Canal to rice• Pond 00 -above rice paddy• Pond 4 - Bakers

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