Low cost irrigation structures and sri

950 views

Published on

Published in: Technology, Business
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
950
On SlideShare
0
From Embeds
0
Number of Embeds
4
Actions
Shares
0
Downloads
17
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Low cost irrigation structures and sri

  1. 1. Principle and practicesfor Irrigation structures in rainfed areas SHARAT SINGH
  2. 2. Schematic of land situation and their hydrology. Arrows show direction of water flow
  3. 3. Farm water harvesting
  4. 4. Paddy field with water body
  5. 5. Paddy with water body in the field
  6. 6. Catchment Area: 50 ha Rain(Jun-Sept):1140 mm=1.14 m WHT size: 4m deep X 1/10th of catchment area 1irrig(5cm)= 500 M3 512/500= 10 Irrign Collection from 1 ha 11400 M3 Even if 50% of the 80% Harvestable 9120M3 Potential is stored Losses (-) 4000 M3 Effective storage 5120 M3 At least 5 Irrigns
  7. 7. Other Harvesting structures 5% model( for a field of size 100ftX100ft the cost for the model would be between 5000 to 6000) Earthen bund Shallow tube wells(in areas having high ground water table) Check dam with pipe flow irrigation and or pedal
  8. 8. Earthen bund/ dam
  9. 9. Earthen Dam
  10. 10. Diversion channelPerennial source of spring water RPVC pipe laid underground
  11. 11. Irrigation channelDiverting stream water for providing irrigation to dry land area. Excess runoff passes through the natural drainage.
  12. 12. Surface water harvested for Ground water recharge and extraction method Costing Rs 80,000
  13. 13. Government programmes …. These structures could be built under the MGNREGS  Cost provisions for 10ft dia wells is more than 1 lakh RKVY  Support for check dam, small irrigation structuresIWMPThe trust through it DBI programme has also helped in assuring irrigation in many area
  14. 14. Thank you

×